./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_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/rfi007_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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi007_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 12:43:09,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:43:09,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:43:09,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:43:09,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:43:09,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:43:09,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:43:09,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:43:09,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:43:09,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:43:09,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:43:09,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:43:09,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:43:09,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:43:09,672 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:43:09,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:43:09,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:43:09,672 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:43:09,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:43:09,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:43:09,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:43:09,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:43:09,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:43:09,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:43:09,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:43:09,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:43:09,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:43:09,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:43:09,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:43:09,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:43:09,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:43:09,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:43:09,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:43:09,678 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:43:09,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:43:09,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:43:09,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:43:09,891 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:43:09,892 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:43:09,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 12:43:10,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:43:10,017 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:43:10,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:43:10,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:43:11,171 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:43:11,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:43:11,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16881681d/4d1575ee4d2c47c4b8223f9ee49d6603/FLAGbce54b14b [2024-06-14 12:43:11,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16881681d/4d1575ee4d2c47c4b8223f9ee49d6603 [2024-06-14 12:43:11,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:43:11,205 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:43:11,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:43:11,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:43:11,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:43:11,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:43:10" (1/2) ... [2024-06-14 12:43:11,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da618f3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:43:11, skipping insertion in model container [2024-06-14 12:43:11,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:43:10" (1/2) ... [2024-06-14 12:43:11,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32617d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:43:11, skipping insertion in model container [2024-06-14 12:43:11,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:43:11" (2/2) ... [2024-06-14 12:43:11,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da618f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11, skipping insertion in model container [2024-06-14 12:43:11,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:43:11" (2/2) ... [2024-06-14 12:43:11,216 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:43:11,259 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:43:11,260 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-14 12:43:11,261 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-14 12:43:11,261 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:43:11,261 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-14 12:43:11,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:43:11,604 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:43:11,615 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:43:11,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:43:11,752 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:43:11,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11 WrapperNode [2024-06-14 12:43:11,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:43:11,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:43:11,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:43:11,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:43:11,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,805 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-14 12:43:11,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:43:11,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:43:11,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:43:11,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:43:11,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,853 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:43:11,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:43:11,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:43:11,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:43:11,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:43:11,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (1/1) ... [2024-06-14 12:43:11,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:43:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:43:11,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:43:11,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:43:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:43:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:43:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:43:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:43:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:43:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:43:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:43:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:43:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:43:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:43:11,934 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:43:12,028 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:43:12,030 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:43:12,275 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:43:12,275 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:43:12,413 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:43:12,414 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:43:12,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:43:12 BoogieIcfgContainer [2024-06-14 12:43:12,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:43:12,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:43:12,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:43:12,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:43:12,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:43:10" (1/4) ... [2024-06-14 12:43:12,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a9b1ff and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:43:12, skipping insertion in model container [2024-06-14 12:43:12,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:43:11" (2/4) ... [2024-06-14 12:43:12,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a9b1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:43:12, skipping insertion in model container [2024-06-14 12:43:12,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:43:11" (3/4) ... [2024-06-14 12:43:12,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a9b1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:43:12, skipping insertion in model container [2024-06-14 12:43:12,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:43:12" (4/4) ... [2024-06-14 12:43:12,426 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:43:12,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:43:12,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:43:12,439 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:43:12,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:43:12,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:43:12,522 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 12:43:12,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:43:12,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:43:12,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:43:12,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 12:43:12,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:43:12,536 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;@70948b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:43:12,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:43:12,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:43:12,539 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:43:12,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:43:12,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:12,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:43:12,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:12,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1505849308, now seen corresponding path program 1 times [2024-06-14 12:43:12,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234267958] [2024-06-14 12:43:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:12,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234267958] [2024-06-14 12:43:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234267958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:13,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:13,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:43:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201049723] [2024-06-14 12:43:13,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:43:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:43:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:43:13,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 12:43:13,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:13,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:13,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 12:43:13,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:13,458 INFO L124 PetriNetUnfolderBase]: 162/307 cut-off events. [2024-06-14 12:43:13,458 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:43:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 307 events. 162/307 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1113 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-14 12:43:13,463 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 12:43:13,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-14 12:43:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:43:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:43:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-14 12:43:13,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-14 12:43:13,474 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 52 transitions. [2024-06-14 12:43:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-14 12:43:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:43:13,478 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 12:43:13,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 12:43:13,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 12:43:13,482 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 12:43:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:13,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:13,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:13,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:43:13,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:13,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -282759621, now seen corresponding path program 1 times [2024-06-14 12:43:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:13,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228379099] [2024-06-14 12:43:13,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:13,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228379099] [2024-06-14 12:43:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228379099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:43:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087745217] [2024-06-14 12:43:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:43:13,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:43:13,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:43:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 12:43:13,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:13,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:13,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 12:43:13,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:14,050 INFO L124 PetriNetUnfolderBase]: 159/304 cut-off events. [2024-06-14 12:43:14,051 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 12:43:14,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 304 events. 159/304 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1089 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-14 12:43:14,055 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 12:43:14,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-14 12:43:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:43:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:43:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-14 12:43:14,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-14 12:43:14,058 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 66 transitions. [2024-06-14 12:43:14,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-14 12:43:14,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:43:14,062 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 12:43:14,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 12:43:14,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 12:43:14,063 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 12:43:14,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:14,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:14,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:14,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:43:14,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:14,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -175612531, now seen corresponding path program 1 times [2024-06-14 12:43:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:14,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8461812] [2024-06-14 12:43:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8461812] [2024-06-14 12:43:14,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8461812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:14,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:14,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:43:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706024386] [2024-06-14 12:43:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:43:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:43:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:43:14,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:43:14,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:14,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:14,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:43:14,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:14,694 INFO L124 PetriNetUnfolderBase]: 187/339 cut-off events. [2024-06-14 12:43:14,695 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-14 12:43:14,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 339 events. 187/339 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-14 12:43:14,697 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-14 12:43:14,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 255 flow [2024-06-14 12:43:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:43:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:43:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 12:43:14,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290322580645161 [2024-06-14 12:43:14,698 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 82 transitions. [2024-06-14 12:43:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 255 flow [2024-06-14 12:43:14,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:43:14,700 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-14 12:43:14,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-14 12:43:14,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 12:43:14,701 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-14 12:43:14,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:14,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:14,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:43:14,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:14,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1149020006, now seen corresponding path program 1 times [2024-06-14 12:43:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476592509] [2024-06-14 12:43:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476592509] [2024-06-14 12:43:15,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476592509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:15,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:15,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:43:15,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909276308] [2024-06-14 12:43:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:15,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:43:15,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:43:15,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:43:15,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:43:15,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:15,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:15,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:43:15,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:15,531 INFO L124 PetriNetUnfolderBase]: 188/341 cut-off events. [2024-06-14 12:43:15,532 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-14 12:43:15,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 341 events. 188/341 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 46 based on Foata normal form. 3/344 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-14 12:43:15,534 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-14 12:43:15,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 340 flow [2024-06-14 12:43:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:43:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:43:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 12:43:15,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-14 12:43:15,535 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 96 transitions. [2024-06-14 12:43:15,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 340 flow [2024-06-14 12:43:15,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 12:43:15,550 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-14 12:43:15,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-14 12:43:15,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 12:43:15,551 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-14 12:43:15,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:15,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:15,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:15,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:43:15,561 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 12:43:15,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1260475274, now seen corresponding path program 1 times [2024-06-14 12:43:15,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:15,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467362446] [2024-06-14 12:43:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467362446] [2024-06-14 12:43:16,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467362446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:16,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:16,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:43:16,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057249613] [2024-06-14 12:43:16,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:43:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:16,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:43:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:43:16,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:43:16,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:16,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:16,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:43:16,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:16,365 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-14 12:43:16,365 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-14 12:43:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 344 events. 189/344 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1218 event pairs, 24 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-14 12:43:16,368 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-14 12:43:16,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 386 flow [2024-06-14 12:43:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-14 12:43:16,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-14 12:43:16,369 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 105 transitions. [2024-06-14 12:43:16,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 386 flow [2024-06-14 12:43:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 354 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:16,371 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-14 12:43:16,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 12:43:16,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:43:16,372 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-14 12:43:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:16,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:16,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:43:16,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:16,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1934851801, now seen corresponding path program 1 times [2024-06-14 12:43:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034799362] [2024-06-14 12:43:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034799362] [2024-06-14 12:43:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034799362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:16,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:43:16,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593167153] [2024-06-14 12:43:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:16,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:43:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:16,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:43:16,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:43:16,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:16,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:16,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:16,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:16,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:16,980 INFO L124 PetriNetUnfolderBase]: 187/341 cut-off events. [2024-06-14 12:43:16,980 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-14 12:43:16,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 341 events. 187/341 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1194 event pairs, 47 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-14 12:43:16,983 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-14 12:43:16,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 311 flow [2024-06-14 12:43:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:43:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:43:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-14 12:43:16,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:43:16,984 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 60 transitions. [2024-06-14 12:43:16,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 311 flow [2024-06-14 12:43:16,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 270 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:16,986 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-14 12:43:16,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 12:43:16,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:43:16,987 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-14 12:43:16,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:16,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:16,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:16,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:43:16,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:16,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 137115187, now seen corresponding path program 1 times [2024-06-14 12:43:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309670152] [2024-06-14 12:43:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:17,396 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 12:43:17,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:17,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309670152] [2024-06-14 12:43:17,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309670152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:17,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:17,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:43:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477487209] [2024-06-14 12:43:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:43:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:43:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:43:17,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:17,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:17,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:17,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:17,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:17,648 INFO L124 PetriNetUnfolderBase]: 181/332 cut-off events. [2024-06-14 12:43:17,648 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2024-06-14 12:43:17,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 332 events. 181/332 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1134 event pairs, 44 based on Foata normal form. 3/335 useless extension candidates. Maximal degree in co-relation 1128. Up to 311 conditions per place. [2024-06-14 12:43:17,651 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 12:43:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 311 flow [2024-06-14 12:43:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:43:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:43:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-14 12:43:17,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-14 12:43:17,652 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 71 transitions. [2024-06-14 12:43:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 311 flow [2024-06-14 12:43:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 296 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:17,655 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-14 12:43:17,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-14 12:43:17,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-14 12:43:17,657 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-14 12:43:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:17,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:17,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:43:17,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:17,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash -514451052, now seen corresponding path program 1 times [2024-06-14 12:43:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82143298] [2024-06-14 12:43:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82143298] [2024-06-14 12:43:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82143298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:18,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:18,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:43:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480700244] [2024-06-14 12:43:18,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:43:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:43:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:43:18,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:18,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:18,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:18,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:18,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:18,273 INFO L124 PetriNetUnfolderBase]: 182/334 cut-off events. [2024-06-14 12:43:18,274 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2024-06-14 12:43:18,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 334 events. 182/334 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1159 event pairs, 43 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 1200. Up to 288 conditions per place. [2024-06-14 12:43:18,276 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-14 12:43:18,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 362 flow [2024-06-14 12:43:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:43:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:43:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 12:43:18,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-14 12:43:18,277 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 77 transitions. [2024-06-14 12:43:18,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 362 flow [2024-06-14 12:43:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:18,279 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-14 12:43:18,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-14 12:43:18,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-14 12:43:18,280 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-14 12:43:18,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:18,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:18,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:18,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:43:18,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:18,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash 328281990, now seen corresponding path program 2 times [2024-06-14 12:43:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387476055] [2024-06-14 12:43:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387476055] [2024-06-14 12:43:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387476055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:18,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:18,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:43:18,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690678223] [2024-06-14 12:43:18,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:18,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:43:18,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:18,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:43:18,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:43:18,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:18,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:18,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:18,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:18,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:18,916 INFO L124 PetriNetUnfolderBase]: 177/324 cut-off events. [2024-06-14 12:43:18,917 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-06-14 12:43:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 324 events. 177/324 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 42 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1201. Up to 309 conditions per place. [2024-06-14 12:43:18,918 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 12:43:18,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 348 flow [2024-06-14 12:43:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:43:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:43:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-14 12:43:18,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:43:18,919 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 69 transitions. [2024-06-14 12:43:18,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 348 flow [2024-06-14 12:43:18,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:43:18,922 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-14 12:43:18,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-14 12:43:18,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 12:43:18,922 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-14 12:43:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:18,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:18,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:43:18,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:18,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1553636556, now seen corresponding path program 1 times [2024-06-14 12:43:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504611308] [2024-06-14 12:43:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:19,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504611308] [2024-06-14 12:43:19,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504611308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:19,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081467441] [2024-06-14 12:43:19,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:19,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:19,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:19,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:19,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:19,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:19,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:19,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:19,684 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-14 12:43:19,684 INFO L125 PetriNetUnfolderBase]: For 1838/1838 co-relation queries the response was YES. [2024-06-14 12:43:19,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 386 events. 215/386 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 50 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1435. Up to 276 conditions per place. [2024-06-14 12:43:19,686 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-14 12:43:19,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 460 flow [2024-06-14 12:43:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 12:43:19,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:43:19,687 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 93 transitions. [2024-06-14 12:43:19,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 460 flow [2024-06-14 12:43:19,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 426 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:19,704 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 297 flow [2024-06-14 12:43:19,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-14 12:43:19,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 12:43:19,705 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 297 flow [2024-06-14 12:43:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:19,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:19,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:19,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:43:19,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:19,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1587045232, now seen corresponding path program 2 times [2024-06-14 12:43:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221084445] [2024-06-14 12:43:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221084445] [2024-06-14 12:43:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221084445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318716458] [2024-06-14 12:43:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:20,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:20,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:20,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:20,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:20,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:20,380 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-14 12:43:20,381 INFO L125 PetriNetUnfolderBase]: For 2087/2087 co-relation queries the response was YES. [2024-06-14 12:43:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 401 events. 224/401 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1441 event pairs, 52 based on Foata normal form. 3/404 useless extension candidates. Maximal degree in co-relation 1647. Up to 377 conditions per place. [2024-06-14 12:43:20,383 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-14 12:43:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 449 flow [2024-06-14 12:43:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:43:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-14 12:43:20,384 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 297 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:43:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 449 flow [2024-06-14 12:43:20,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 434 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 12:43:20,388 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 325 flow [2024-06-14 12:43:20,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-14 12:43:20,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 12:43:20,388 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 325 flow [2024-06-14 12:43:20,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:20,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:20,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:43:20,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:20,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:20,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1198929262, now seen corresponding path program 3 times [2024-06-14 12:43:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033341099] [2024-06-14 12:43:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:20,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033341099] [2024-06-14 12:43:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033341099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023038268] [2024-06-14 12:43:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:20,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:20,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:20,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:20,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:20,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:21,142 INFO L124 PetriNetUnfolderBase]: 218/392 cut-off events. [2024-06-14 12:43:21,143 INFO L125 PetriNetUnfolderBase]: For 2404/2404 co-relation queries the response was YES. [2024-06-14 12:43:21,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 392 events. 218/392 cut-off events. For 2404/2404 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1409 event pairs, 46 based on Foata normal form. 3/395 useless extension candidates. Maximal degree in co-relation 1646. Up to 356 conditions per place. [2024-06-14 12:43:21,145 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-14 12:43:21,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 495 flow [2024-06-14 12:43:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 12:43:21,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:43:21,146 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 325 flow. Second operand 7 states and 84 transitions. [2024-06-14 12:43:21,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 495 flow [2024-06-14 12:43:21,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 468 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:21,149 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 351 flow [2024-06-14 12:43:21,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-14 12:43:21,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 12:43:21,150 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 351 flow [2024-06-14 12:43:21,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:21,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:21,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:21,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:43:21,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:21,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash -470005645, now seen corresponding path program 1 times [2024-06-14 12:43:21,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:21,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788918726] [2024-06-14 12:43:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:21,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788918726] [2024-06-14 12:43:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788918726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:21,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749397462] [2024-06-14 12:43:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:21,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:21,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:21,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:21,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:21,989 INFO L124 PetriNetUnfolderBase]: 221/397 cut-off events. [2024-06-14 12:43:21,990 INFO L125 PetriNetUnfolderBase]: For 2632/2632 co-relation queries the response was YES. [2024-06-14 12:43:21,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 397 events. 221/397 cut-off events. For 2632/2632 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1432 event pairs, 46 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 1712. Up to 334 conditions per place. [2024-06-14 12:43:21,992 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 52 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-14 12:43:21,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 571 flow [2024-06-14 12:43:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 12:43:21,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 12:43:21,994 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 351 flow. Second operand 7 states and 89 transitions. [2024-06-14 12:43:21,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 571 flow [2024-06-14 12:43:21,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 536 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:21,999 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 383 flow [2024-06-14 12:43:21,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-14 12:43:22,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:43:22,000 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 383 flow [2024-06-14 12:43:22,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:22,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:22,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:22,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:43:22,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:22,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash -469915435, now seen corresponding path program 2 times [2024-06-14 12:43:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382740296] [2024-06-14 12:43:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382740296] [2024-06-14 12:43:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382740296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:22,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:22,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403848311] [2024-06-14 12:43:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:22,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:22,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:22,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:22,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:22,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:22,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:22,943 INFO L124 PetriNetUnfolderBase]: 219/394 cut-off events. [2024-06-14 12:43:22,944 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-14 12:43:22,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 394 events. 219/394 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1416 event pairs, 46 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1731. Up to 347 conditions per place. [2024-06-14 12:43:22,946 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-14 12:43:22,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 537 flow [2024-06-14 12:43:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 12:43:22,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-14 12:43:22,947 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 383 flow. Second operand 7 states and 85 transitions. [2024-06-14 12:43:22,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 537 flow [2024-06-14 12:43:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 512 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:43:22,951 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 393 flow [2024-06-14 12:43:22,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-14 12:43:22,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-14 12:43:22,952 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 393 flow [2024-06-14 12:43:22,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:22,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:22,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:22,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:43:22,952 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:22,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash -466196210, now seen corresponding path program 1 times [2024-06-14 12:43:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:22,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532210464] [2024-06-14 12:43:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:22,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:23,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:23,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532210464] [2024-06-14 12:43:23,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532210464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:23,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:23,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:43:23,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223287372] [2024-06-14 12:43:23,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:43:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:43:23,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:43:23,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:23,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:23,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:23,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:23,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:23,690 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 12:43:23,690 INFO L125 PetriNetUnfolderBase]: For 3517/3517 co-relation queries the response was YES. [2024-06-14 12:43:23,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 409 events. 228/409 cut-off events. For 3517/3517 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1504 event pairs, 45 based on Foata normal form. 3/412 useless extension candidates. Maximal degree in co-relation 1834. Up to 287 conditions per place. [2024-06-14 12:43:23,693 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 24 changer transitions 0/79 dead transitions. [2024-06-14 12:43:23,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 643 flow [2024-06-14 12:43:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:43:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:43:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:43:23,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 12:43:23,694 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 393 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:43:23,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 643 flow [2024-06-14 12:43:23,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 605 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:23,699 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 424 flow [2024-06-14 12:43:23,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-14 12:43:23,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 12:43:23,699 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 424 flow [2024-06-14 12:43:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:23,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:23,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:23,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:43:23,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:23,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -466190630, now seen corresponding path program 2 times [2024-06-14 12:43:23,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954606339] [2024-06-14 12:43:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954606339] [2024-06-14 12:43:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954606339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:24,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911512010] [2024-06-14 12:43:24,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:24,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:24,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:24,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:24,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:24,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:24,538 INFO L124 PetriNetUnfolderBase]: 237/424 cut-off events. [2024-06-14 12:43:24,538 INFO L125 PetriNetUnfolderBase]: For 4077/4077 co-relation queries the response was YES. [2024-06-14 12:43:24,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 424 events. 237/424 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1566 event pairs, 51 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1970. Up to 295 conditions per place. [2024-06-14 12:43:24,541 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-14 12:43:24,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 674 flow [2024-06-14 12:43:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:43:24,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:43:24,542 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 424 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:43:24,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 674 flow [2024-06-14 12:43:24,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 614 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:24,548 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 435 flow [2024-06-14 12:43:24,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-14 12:43:24,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 12:43:24,548 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 435 flow [2024-06-14 12:43:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:24,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:24,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:24,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:43:24,549 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:24,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1953770391, now seen corresponding path program 1 times [2024-06-14 12:43:24,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:24,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189260716] [2024-06-14 12:43:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:24,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189260716] [2024-06-14 12:43:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189260716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:25,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:25,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646823951] [2024-06-14 12:43:25,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:25,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:25,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:25,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:25,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:25,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:25,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:25,476 INFO L124 PetriNetUnfolderBase]: 233/418 cut-off events. [2024-06-14 12:43:25,476 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-14 12:43:25,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 418 events. 233/418 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1535 event pairs, 45 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1937. Up to 389 conditions per place. [2024-06-14 12:43:25,479 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-14 12:43:25,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 617 flow [2024-06-14 12:43:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:43:25,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-14 12:43:25,481 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 435 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:43:25,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 617 flow [2024-06-14 12:43:25,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 579 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:25,487 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 448 flow [2024-06-14 12:43:25,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-06-14 12:43:25,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 12:43:25,487 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 448 flow [2024-06-14 12:43:25,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:25,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:25,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:43:25,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:25,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash 278017642, now seen corresponding path program 3 times [2024-06-14 12:43:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:25,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900580284] [2024-06-14 12:43:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:26,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900580284] [2024-06-14 12:43:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900580284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:26,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261172770] [2024-06-14 12:43:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:26,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:26,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:26,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:26,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:26,382 INFO L124 PetriNetUnfolderBase]: 242/433 cut-off events. [2024-06-14 12:43:26,383 INFO L125 PetriNetUnfolderBase]: For 4765/4765 co-relation queries the response was YES. [2024-06-14 12:43:26,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 433 events. 242/433 cut-off events. For 4765/4765 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1612 event pairs, 46 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 1995. Up to 384 conditions per place. [2024-06-14 12:43:26,385 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-14 12:43:26,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 656 flow [2024-06-14 12:43:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:43:26,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-14 12:43:26,386 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 448 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:43:26,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 656 flow [2024-06-14 12:43:26,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 618 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:26,392 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 467 flow [2024-06-14 12:43:26,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-14 12:43:26,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 12:43:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 467 flow [2024-06-14 12:43:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:26,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:43:26,394 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:26,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash 285369292, now seen corresponding path program 4 times [2024-06-14 12:43:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:26,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586858448] [2024-06-14 12:43:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:26,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:26,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586858448] [2024-06-14 12:43:26,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586858448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:26,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:26,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:26,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51307698] [2024-06-14 12:43:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:26,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:26,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:26,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:26,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:26,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:26,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:26,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:26,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:27,157 INFO L124 PetriNetUnfolderBase]: 236/424 cut-off events. [2024-06-14 12:43:27,158 INFO L125 PetriNetUnfolderBase]: For 4872/4872 co-relation queries the response was YES. [2024-06-14 12:43:27,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 424 events. 236/424 cut-off events. For 4872/4872 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1580 event pairs, 48 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1946. Up to 387 conditions per place. [2024-06-14 12:43:27,160 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-14 12:43:27,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 647 flow [2024-06-14 12:43:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:43:27,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-14 12:43:27,161 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 467 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:43:27,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 647 flow [2024-06-14 12:43:27,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 606 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:27,168 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 455 flow [2024-06-14 12:43:27,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=455, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-14 12:43:27,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:43:27,168 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 455 flow [2024-06-14 12:43:27,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:27,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:27,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:27,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:43:27,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:27,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 285646339, now seen corresponding path program 1 times [2024-06-14 12:43:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750128416] [2024-06-14 12:43:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750128416] [2024-06-14 12:43:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750128416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044493516] [2024-06-14 12:43:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:28,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:28,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 455 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:28,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:28,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:28,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:28,360 INFO L124 PetriNetUnfolderBase]: 233/419 cut-off events. [2024-06-14 12:43:28,360 INFO L125 PetriNetUnfolderBase]: For 4904/4904 co-relation queries the response was YES. [2024-06-14 12:43:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 419 events. 233/419 cut-off events. For 4904/4904 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1541 event pairs, 46 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 1903. Up to 392 conditions per place. [2024-06-14 12:43:28,363 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-14 12:43:28,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 623 flow [2024-06-14 12:43:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:43:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:43:28,364 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 455 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:43:28,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 623 flow [2024-06-14 12:43:28,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 566 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:28,380 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 424 flow [2024-06-14 12:43:28,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-14 12:43:28,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:43:28,380 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 424 flow [2024-06-14 12:43:28,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:28,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:28,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:43:28,381 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:28,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1485588375, now seen corresponding path program 1 times [2024-06-14 12:43:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812307028] [2024-06-14 12:43:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812307028] [2024-06-14 12:43:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812307028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:29,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150808301] [2024-06-14 12:43:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:29,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:29,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:29,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:29,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:29,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:29,260 INFO L124 PetriNetUnfolderBase]: 237/427 cut-off events. [2024-06-14 12:43:29,260 INFO L125 PetriNetUnfolderBase]: For 5310/5310 co-relation queries the response was YES. [2024-06-14 12:43:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 427 events. 237/427 cut-off events. For 5310/5310 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1593 event pairs, 33 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 1910. Up to 322 conditions per place. [2024-06-14 12:43:29,262 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-14 12:43:29,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 676 flow [2024-06-14 12:43:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:43:29,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 12:43:29,264 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 424 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:43:29,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 676 flow [2024-06-14 12:43:29,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 646 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:29,271 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 448 flow [2024-06-14 12:43:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-14 12:43:29,271 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 12:43:29,271 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 448 flow [2024-06-14 12:43:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:29,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:29,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:43:29,272 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1485648949, now seen corresponding path program 1 times [2024-06-14 12:43:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:29,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920349725] [2024-06-14 12:43:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:29,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920349725] [2024-06-14 12:43:29,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920349725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:29,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047413183] [2024-06-14 12:43:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:29,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:29,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:29,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:29,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:29,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:29,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:30,049 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-14 12:43:30,049 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-14 12:43:30,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 432 events. 240/432 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1638 event pairs, 38 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1970. Up to 324 conditions per place. [2024-06-14 12:43:30,062 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-14 12:43:30,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 777 flow [2024-06-14 12:43:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 12:43:30,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 12:43:30,064 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 448 flow. Second operand 8 states and 101 transitions. [2024-06-14 12:43:30,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 777 flow [2024-06-14 12:43:30,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 733 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:30,071 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 529 flow [2024-06-14 12:43:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-14 12:43:30,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-14 12:43:30,072 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 529 flow [2024-06-14 12:43:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:30,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:30,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:43:30,072 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:30,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1685272247, now seen corresponding path program 2 times [2024-06-14 12:43:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776313360] [2024-06-14 12:43:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776313360] [2024-06-14 12:43:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776313360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:30,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874372140] [2024-06-14 12:43:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:30,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:30,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 529 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:30,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:30,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:31,038 INFO L124 PetriNetUnfolderBase]: 237/427 cut-off events. [2024-06-14 12:43:31,038 INFO L125 PetriNetUnfolderBase]: For 5990/5990 co-relation queries the response was YES. [2024-06-14 12:43:31,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 427 events. 237/427 cut-off events. For 5990/5990 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1601 event pairs, 48 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2009. Up to 357 conditions per place. [2024-06-14 12:43:31,040 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-14 12:43:31,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 747 flow [2024-06-14 12:43:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:43:31,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:43:31,042 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 529 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:43:31,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 747 flow [2024-06-14 12:43:31,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 707 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:31,050 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 536 flow [2024-06-14 12:43:31,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=536, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-14 12:43:31,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-14 12:43:31,050 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 536 flow [2024-06-14 12:43:31,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:31,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:31,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:31,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:43:31,051 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 12:43:31,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1488450109, now seen corresponding path program 2 times [2024-06-14 12:43:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:31,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762976555] [2024-06-14 12:43:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:31,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762976555] [2024-06-14 12:43:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762976555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:31,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:31,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711089136] [2024-06-14 12:43:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:31,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:31,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:31,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:31,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:31,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:31,912 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-14 12:43:31,913 INFO L125 PetriNetUnfolderBase]: For 6680/6680 co-relation queries the response was YES. [2024-06-14 12:43:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 442 events. 246/442 cut-off events. For 6680/6680 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1681 event pairs, 45 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 2050. Up to 300 conditions per place. [2024-06-14 12:43:31,915 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-14 12:43:31,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 785 flow [2024-06-14 12:43:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:43:31,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-14 12:43:31,919 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 536 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:43:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 785 flow [2024-06-14 12:43:31,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 738 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:31,929 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 599 flow [2024-06-14 12:43:31,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-14 12:43:31,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-14 12:43:31,929 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 599 flow [2024-06-14 12:43:31,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:31,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:31,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:31,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:43:31,930 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:31,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1488445459, now seen corresponding path program 3 times [2024-06-14 12:43:31,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:31,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538627805] [2024-06-14 12:43:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:32,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:32,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538627805] [2024-06-14 12:43:32,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538627805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:32,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:32,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:32,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783923362] [2024-06-14 12:43:32,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:32,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:32,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:32,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:32,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:32,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:32,773 INFO L124 PetriNetUnfolderBase]: 249/447 cut-off events. [2024-06-14 12:43:32,773 INFO L125 PetriNetUnfolderBase]: For 6748/6748 co-relation queries the response was YES. [2024-06-14 12:43:32,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 447 events. 249/447 cut-off events. For 6748/6748 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1709 event pairs, 45 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2159. Up to 299 conditions per place. [2024-06-14 12:43:32,776 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 38 changer transitions 0/98 dead transitions. [2024-06-14 12:43:32,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 846 flow [2024-06-14 12:43:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:43:32,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-14 12:43:32,777 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 599 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:43:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 846 flow [2024-06-14 12:43:32,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 772 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:32,786 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 632 flow [2024-06-14 12:43:32,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-14 12:43:32,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-14 12:43:32,786 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 632 flow [2024-06-14 12:43:32,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:32,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:32,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:43:32,787 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash -763754803, now seen corresponding path program 4 times [2024-06-14 12:43:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028979444] [2024-06-14 12:43:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028979444] [2024-06-14 12:43:33,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028979444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:33,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:33,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929548876] [2024-06-14 12:43:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:33,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:33,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:33,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:33,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:33,609 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-06-14 12:43:33,610 INFO L125 PetriNetUnfolderBase]: For 7302/7302 co-relation queries the response was YES. [2024-06-14 12:43:33,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 452 events. 252/452 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1731 event pairs, 45 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2226. Up to 356 conditions per place. [2024-06-14 12:43:33,612 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-14 12:43:33,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 979 flow [2024-06-14 12:43:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:43:33,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-14 12:43:33,613 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 632 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:43:33,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 979 flow [2024-06-14 12:43:33,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 906 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:33,623 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 686 flow [2024-06-14 12:43:33,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-06-14 12:43:33,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 12:43:33,624 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 686 flow [2024-06-14 12:43:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:33,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:33,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:33,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:43:33,625 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:33,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash -763750153, now seen corresponding path program 5 times [2024-06-14 12:43:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226012827] [2024-06-14 12:43:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:33,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:34,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:34,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226012827] [2024-06-14 12:43:34,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226012827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:34,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:34,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548263586] [2024-06-14 12:43:34,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:34,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:34,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:34,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:34,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:34,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:34,568 INFO L124 PetriNetUnfolderBase]: 261/467 cut-off events. [2024-06-14 12:43:34,568 INFO L125 PetriNetUnfolderBase]: For 8586/8586 co-relation queries the response was YES. [2024-06-14 12:43:34,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 467 events. 261/467 cut-off events. For 8586/8586 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1813 event pairs, 37 based on Foata normal form. 3/470 useless extension candidates. Maximal degree in co-relation 2348. Up to 325 conditions per place. [2024-06-14 12:43:34,571 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-06-14 12:43:34,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 995 flow [2024-06-14 12:43:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:43:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:43:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:43:34,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-14 12:43:34,572 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 686 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:43:34,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 995 flow [2024-06-14 12:43:34,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 948 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:34,583 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 779 flow [2024-06-14 12:43:34,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=779, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-06-14 12:43:34,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-14 12:43:34,584 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 779 flow [2024-06-14 12:43:34,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:34,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:34,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:34,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:43:34,584 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:34,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1567006813, now seen corresponding path program 6 times [2024-06-14 12:43:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:34,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283587557] [2024-06-14 12:43:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:34,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283587557] [2024-06-14 12:43:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283587557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235546859] [2024-06-14 12:43:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:35,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:35,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:35,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:35,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:35,667 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-14 12:43:35,667 INFO L125 PetriNetUnfolderBase]: For 8593/8593 co-relation queries the response was YES. [2024-06-14 12:43:35,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 472 events. 264/472 cut-off events. For 8593/8593 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1833 event pairs, 47 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2480. Up to 398 conditions per place. [2024-06-14 12:43:35,670 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-14 12:43:35,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 1056 flow [2024-06-14 12:43:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:43:35,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:43:35,672 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 779 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:43:35,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 1056 flow [2024-06-14 12:43:35,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 958 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:35,687 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 775 flow [2024-06-14 12:43:35,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2024-06-14 12:43:35,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-14 12:43:35,687 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 775 flow [2024-06-14 12:43:35,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:35,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:35,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:43:35,688 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:35,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash 437340775, now seen corresponding path program 1 times [2024-06-14 12:43:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087837114] [2024-06-14 12:43:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:36,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:36,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087837114] [2024-06-14 12:43:36,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087837114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:36,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:36,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:36,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452000694] [2024-06-14 12:43:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:36,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:36,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:36,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:36,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:36,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:36,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:36,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:36,659 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-14 12:43:36,659 INFO L125 PetriNetUnfolderBase]: For 8693/8693 co-relation queries the response was YES. [2024-06-14 12:43:36,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2419 conditions, 466 events. 260/466 cut-off events. For 8693/8693 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1802 event pairs, 40 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2369. Up to 429 conditions per place. [2024-06-14 12:43:36,662 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-14 12:43:36,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 1033 flow [2024-06-14 12:43:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:43:36,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:43:36,665 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 775 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:43:36,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 1033 flow [2024-06-14 12:43:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 991 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:36,679 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 786 flow [2024-06-14 12:43:36,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-06-14 12:43:36,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-14 12:43:36,682 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 786 flow [2024-06-14 12:43:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:36,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:36,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:43:36,682 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1347712171, now seen corresponding path program 7 times [2024-06-14 12:43:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012106270] [2024-06-14 12:43:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012106270] [2024-06-14 12:43:37,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012106270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:37,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:37,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338105048] [2024-06-14 12:43:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:37,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:37,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:37,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:37,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:37,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:37,676 INFO L124 PetriNetUnfolderBase]: 269/481 cut-off events. [2024-06-14 12:43:37,676 INFO L125 PetriNetUnfolderBase]: For 9727/9727 co-relation queries the response was YES. [2024-06-14 12:43:37,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 481 events. 269/481 cut-off events. For 9727/9727 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1885 event pairs, 42 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 2465. Up to 433 conditions per place. [2024-06-14 12:43:37,679 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 96 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-14 12:43:37,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 1107 flow [2024-06-14 12:43:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:43:37,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:43:37,680 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 786 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:43:37,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 1107 flow [2024-06-14 12:43:37,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 1070 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:37,695 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 855 flow [2024-06-14 12:43:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=855, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-06-14 12:43:37,696 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-14 12:43:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 855 flow [2024-06-14 12:43:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:37,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:37,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:43:37,696 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:37,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1127684231, now seen corresponding path program 8 times [2024-06-14 12:43:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279490084] [2024-06-14 12:43:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279490084] [2024-06-14 12:43:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279490084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:38,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480847948] [2024-06-14 12:43:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:38,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:38,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:38,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:38,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:38,838 INFO L124 PetriNetUnfolderBase]: 273/488 cut-off events. [2024-06-14 12:43:38,838 INFO L125 PetriNetUnfolderBase]: For 10025/10025 co-relation queries the response was YES. [2024-06-14 12:43:38,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 488 events. 273/488 cut-off events. For 10025/10025 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1928 event pairs, 42 based on Foata normal form. 3/491 useless extension candidates. Maximal degree in co-relation 2523. Up to 428 conditions per place. [2024-06-14 12:43:38,842 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-06-14 12:43:38,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 1158 flow [2024-06-14 12:43:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:43:38,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:43:38,843 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 855 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:43:38,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 1158 flow [2024-06-14 12:43:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 1082 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:38,857 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 863 flow [2024-06-14 12:43:38,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=863, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-06-14 12:43:38,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:43:38,858 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 863 flow [2024-06-14 12:43:38,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:38,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:38,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:38,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:43:38,859 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:38,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1191399647, now seen corresponding path program 1 times [2024-06-14 12:43:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:38,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987518474] [2024-06-14 12:43:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:39,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987518474] [2024-06-14 12:43:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987518474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:39,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653335465] [2024-06-14 12:43:39,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:39,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:39,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:39,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:39,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 863 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:39,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:39,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:39,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:39,837 INFO L124 PetriNetUnfolderBase]: 330/597 cut-off events. [2024-06-14 12:43:39,837 INFO L125 PetriNetUnfolderBase]: For 17712/17712 co-relation queries the response was YES. [2024-06-14 12:43:39,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 597 events. 330/597 cut-off events. For 17712/17712 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2518 event pairs, 41 based on Foata normal form. 2/599 useless extension candidates. Maximal degree in co-relation 3446. Up to 197 conditions per place. [2024-06-14 12:43:39,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2024-06-14 12:43:39,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 1395 flow [2024-06-14 12:43:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:43:39,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 12:43:39,841 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 863 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:43:39,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 1395 flow [2024-06-14 12:43:39,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 135 transitions, 1308 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:39,863 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 977 flow [2024-06-14 12:43:39,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-14 12:43:39,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 12:43:39,863 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 977 flow [2024-06-14 12:43:39,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:39,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:39,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:43:39,864 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:39,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1189525697, now seen corresponding path program 2 times [2024-06-14 12:43:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561366909] [2024-06-14 12:43:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:40,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:40,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561366909] [2024-06-14 12:43:40,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561366909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:40,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:40,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:40,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297646184] [2024-06-14 12:43:40,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:40,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:40,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:40,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:40,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:40,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:40,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:40,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:40,893 INFO L124 PetriNetUnfolderBase]: 384/703 cut-off events. [2024-06-14 12:43:40,894 INFO L125 PetriNetUnfolderBase]: For 26942/26942 co-relation queries the response was YES. [2024-06-14 12:43:40,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 703 events. 384/703 cut-off events. For 26942/26942 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3168 event pairs, 75 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4523. Up to 369 conditions per place. [2024-06-14 12:43:40,897 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 64 changer transitions 0/139 dead transitions. [2024-06-14 12:43:40,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 1505 flow [2024-06-14 12:43:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:43:40,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-14 12:43:40,898 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 977 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:43:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 1505 flow [2024-06-14 12:43:40,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 1456 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:43:40,922 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 1101 flow [2024-06-14 12:43:40,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1101, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-06-14 12:43:40,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:43:40,923 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 1101 flow [2024-06-14 12:43:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:40,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:40,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:40,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:43:40,923 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:40,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -703827401, now seen corresponding path program 3 times [2024-06-14 12:43:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971415965] [2024-06-14 12:43:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971415965] [2024-06-14 12:43:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971415965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944010184] [2024-06-14 12:43:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:41,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:41,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 1101 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:41,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:41,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:41,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:42,043 INFO L124 PetriNetUnfolderBase]: 518/943 cut-off events. [2024-06-14 12:43:42,043 INFO L125 PetriNetUnfolderBase]: For 38703/38703 co-relation queries the response was YES. [2024-06-14 12:43:42,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 943 events. 518/943 cut-off events. For 38703/38703 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4606 event pairs, 190 based on Foata normal form. 16/959 useless extension candidates. Maximal degree in co-relation 6051. Up to 668 conditions per place. [2024-06-14 12:43:42,049 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 110 selfloop transitions, 64 changer transitions 8/184 dead transitions. [2024-06-14 12:43:42,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 184 transitions, 2201 flow [2024-06-14 12:43:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:43:42,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-14 12:43:42,050 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 1101 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:43:42,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 184 transitions, 2201 flow [2024-06-14 12:43:42,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 184 transitions, 2035 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:42,084 INFO L231 Difference]: Finished difference. Result has 131 places, 152 transitions, 1745 flow [2024-06-14 12:43:42,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1745, PETRI_PLACES=131, PETRI_TRANSITIONS=152} [2024-06-14 12:43:42,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 12:43:42,084 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 152 transitions, 1745 flow [2024-06-14 12:43:42,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:42,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:42,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:43:42,085 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:42,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1679335297, now seen corresponding path program 4 times [2024-06-14 12:43:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232071538] [2024-06-14 12:43:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:42,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232071538] [2024-06-14 12:43:42,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232071538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:42,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:42,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:42,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747393029] [2024-06-14 12:43:42,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:42,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:42,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:42,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:42,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:42,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 152 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:43,452 INFO L124 PetriNetUnfolderBase]: 495/905 cut-off events. [2024-06-14 12:43:43,453 INFO L125 PetriNetUnfolderBase]: For 33166/33166 co-relation queries the response was YES. [2024-06-14 12:43:43,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 905 events. 495/905 cut-off events. For 33166/33166 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4371 event pairs, 94 based on Foata normal form. 16/921 useless extension candidates. Maximal degree in co-relation 5804. Up to 648 conditions per place. [2024-06-14 12:43:43,458 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 60 changer transitions 8/193 dead transitions. [2024-06-14 12:43:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 193 transitions, 2430 flow [2024-06-14 12:43:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:43:43,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:43:43,459 INFO L175 Difference]: Start difference. First operand has 131 places, 152 transitions, 1745 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:43:43,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 193 transitions, 2430 flow [2024-06-14 12:43:43,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 193 transitions, 2383 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-14 12:43:43,502 INFO L231 Difference]: Finished difference. Result has 145 places, 161 transitions, 1973 flow [2024-06-14 12:43:43,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1973, PETRI_PLACES=145, PETRI_TRANSITIONS=161} [2024-06-14 12:43:43,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-14 12:43:43,503 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 161 transitions, 1973 flow [2024-06-14 12:43:43,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:43,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:43,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:43:43,503 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:43,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2126277936, now seen corresponding path program 1 times [2024-06-14 12:43:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430648371] [2024-06-14 12:43:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430648371] [2024-06-14 12:43:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430648371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:44,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:44,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792401262] [2024-06-14 12:43:44,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:44,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:44,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:44,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:44,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 161 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:44,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:44,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:44,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:44,588 INFO L124 PetriNetUnfolderBase]: 493/901 cut-off events. [2024-06-14 12:43:44,588 INFO L125 PetriNetUnfolderBase]: For 28432/28432 co-relation queries the response was YES. [2024-06-14 12:43:44,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 901 events. 493/901 cut-off events. For 28432/28432 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4388 event pairs, 84 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6099. Up to 615 conditions per place. [2024-06-14 12:43:44,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 124 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-14 12:43:44,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 187 transitions, 2554 flow [2024-06-14 12:43:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:43:44,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:43:44,609 INFO L175 Difference]: Start difference. First operand has 145 places, 161 transitions, 1973 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:43:44,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 187 transitions, 2554 flow [2024-06-14 12:43:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 187 transitions, 2296 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:44,660 INFO L231 Difference]: Finished difference. Result has 146 places, 165 transitions, 1918 flow [2024-06-14 12:43:44,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1918, PETRI_PLACES=146, PETRI_TRANSITIONS=165} [2024-06-14 12:43:44,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-14 12:43:44,660 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 165 transitions, 1918 flow [2024-06-14 12:43:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:44,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:44,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:44,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:43:44,661 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:44,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 881459718, now seen corresponding path program 2 times [2024-06-14 12:43:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636199434] [2024-06-14 12:43:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:45,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:45,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636199434] [2024-06-14 12:43:45,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636199434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:45,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:45,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688256398] [2024-06-14 12:43:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:45,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 165 transitions, 1918 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:45,868 INFO L124 PetriNetUnfolderBase]: 499/911 cut-off events. [2024-06-14 12:43:45,868 INFO L125 PetriNetUnfolderBase]: For 30021/30021 co-relation queries the response was YES. [2024-06-14 12:43:45,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 911 events. 499/911 cut-off events. For 30021/30021 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4445 event pairs, 86 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 6084. Up to 690 conditions per place. [2024-06-14 12:43:45,873 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 51 changer transitions 0/186 dead transitions. [2024-06-14 12:43:45,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 186 transitions, 2382 flow [2024-06-14 12:43:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:43:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-14 12:43:45,881 INFO L175 Difference]: Start difference. First operand has 146 places, 165 transitions, 1918 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:43:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 186 transitions, 2382 flow [2024-06-14 12:43:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 186 transitions, 2298 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 12:43:45,928 INFO L231 Difference]: Finished difference. Result has 152 places, 167 transitions, 1985 flow [2024-06-14 12:43:45,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=152, PETRI_TRANSITIONS=167} [2024-06-14 12:43:45,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-14 12:43:45,928 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 167 transitions, 1985 flow [2024-06-14 12:43:45,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:45,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:45,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:43:45,929 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:45,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 493436748, now seen corresponding path program 3 times [2024-06-14 12:43:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176917091] [2024-06-14 12:43:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:46,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176917091] [2024-06-14 12:43:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176917091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:46,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389365725] [2024-06-14 12:43:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:46,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:46,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 167 transitions, 1985 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:46,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:46,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:46,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:47,134 INFO L124 PetriNetUnfolderBase]: 505/921 cut-off events. [2024-06-14 12:43:47,135 INFO L125 PetriNetUnfolderBase]: For 32151/32151 co-relation queries the response was YES. [2024-06-14 12:43:47,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6352 conditions, 921 events. 505/921 cut-off events. For 32151/32151 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4527 event pairs, 96 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6280. Up to 710 conditions per place. [2024-06-14 12:43:47,140 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 51 changer transitions 0/188 dead transitions. [2024-06-14 12:43:47,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 2455 flow [2024-06-14 12:43:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:43:47,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-14 12:43:47,149 INFO L175 Difference]: Start difference. First operand has 152 places, 167 transitions, 1985 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:43:47,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 2455 flow [2024-06-14 12:43:47,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 188 transitions, 2329 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:47,201 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 2012 flow [2024-06-14 12:43:47,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-06-14 12:43:47,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-14 12:43:47,202 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 2012 flow [2024-06-14 12:43:47,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:47,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:47,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:47,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:43:47,203 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:47,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash 311466418, now seen corresponding path program 4 times [2024-06-14 12:43:47,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:47,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835061706] [2024-06-14 12:43:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:47,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835061706] [2024-06-14 12:43:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835061706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858562646] [2024-06-14 12:43:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:47,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:47,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 2012 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:47,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:47,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:47,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:48,362 INFO L124 PetriNetUnfolderBase]: 511/931 cut-off events. [2024-06-14 12:43:48,362 INFO L125 PetriNetUnfolderBase]: For 33329/33329 co-relation queries the response was YES. [2024-06-14 12:43:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 931 events. 511/931 cut-off events. For 33329/33329 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4549 event pairs, 90 based on Foata normal form. 2/933 useless extension candidates. Maximal degree in co-relation 6363. Up to 519 conditions per place. [2024-06-14 12:43:48,370 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 92 changer transitions 0/194 dead transitions. [2024-06-14 12:43:48,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 194 transitions, 2619 flow [2024-06-14 12:43:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:43:48,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 12:43:48,381 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 2012 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:43:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 194 transitions, 2619 flow [2024-06-14 12:43:48,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 194 transitions, 2483 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:48,440 INFO L231 Difference]: Finished difference. Result has 159 places, 175 transitions, 2236 flow [2024-06-14 12:43:48,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2236, PETRI_PLACES=159, PETRI_TRANSITIONS=175} [2024-06-14 12:43:48,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-14 12:43:48,441 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 175 transitions, 2236 flow [2024-06-14 12:43:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:48,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:48,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:48,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:43:48,441 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:48,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 298954043, now seen corresponding path program 5 times [2024-06-14 12:43:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981698179] [2024-06-14 12:43:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981698179] [2024-06-14 12:43:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981698179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:43:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255064225] [2024-06-14 12:43:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:43:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:43:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:43:49,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:49,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 175 transitions, 2236 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:49,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:49,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:49,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:49,357 INFO L124 PetriNetUnfolderBase]: 508/926 cut-off events. [2024-06-14 12:43:49,357 INFO L125 PetriNetUnfolderBase]: For 34131/34131 co-relation queries the response was YES. [2024-06-14 12:43:49,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 926 events. 508/926 cut-off events. For 34131/34131 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4521 event pairs, 105 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6542. Up to 726 conditions per place. [2024-06-14 12:43:49,362 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 67 changer transitions 0/190 dead transitions. [2024-06-14 12:43:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 190 transitions, 2665 flow [2024-06-14 12:43:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:43:49,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:43:49,363 INFO L175 Difference]: Start difference. First operand has 159 places, 175 transitions, 2236 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:43:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 190 transitions, 2665 flow [2024-06-14 12:43:49,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 190 transitions, 2515 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:49,421 INFO L231 Difference]: Finished difference. Result has 161 places, 175 transitions, 2228 flow [2024-06-14 12:43:49,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2228, PETRI_PLACES=161, PETRI_TRANSITIONS=175} [2024-06-14 12:43:49,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-14 12:43:49,421 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 175 transitions, 2228 flow [2024-06-14 12:43:49,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:49,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:49,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:49,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:43:49,422 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:49,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1427617103, now seen corresponding path program 6 times [2024-06-14 12:43:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:49,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507624343] [2024-06-14 12:43:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:50,012 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 12:43:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:50,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507624343] [2024-06-14 12:43:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507624343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:50,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661706294] [2024-06-14 12:43:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:50,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:50,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:50,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 175 transitions, 2228 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:50,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:50,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:50,459 INFO L124 PetriNetUnfolderBase]: 536/980 cut-off events. [2024-06-14 12:43:50,459 INFO L125 PetriNetUnfolderBase]: For 36423/36423 co-relation queries the response was YES. [2024-06-14 12:43:50,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 980 events. 536/980 cut-off events. For 36423/36423 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4883 event pairs, 101 based on Foata normal form. 2/982 useless extension candidates. Maximal degree in co-relation 6846. Up to 820 conditions per place. [2024-06-14 12:43:50,464 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-14 12:43:50,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 204 transitions, 2874 flow [2024-06-14 12:43:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:43:50,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 12:43:50,465 INFO L175 Difference]: Start difference. First operand has 161 places, 175 transitions, 2228 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:43:50,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 204 transitions, 2874 flow [2024-06-14 12:43:50,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 204 transitions, 2751 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:50,524 INFO L231 Difference]: Finished difference. Result has 169 places, 184 transitions, 2350 flow [2024-06-14 12:43:50,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2350, PETRI_PLACES=169, PETRI_TRANSITIONS=184} [2024-06-14 12:43:50,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-14 12:43:50,525 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 184 transitions, 2350 flow [2024-06-14 12:43:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:50,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:50,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:50,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:43:50,525 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:50,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1169332853, now seen corresponding path program 7 times [2024-06-14 12:43:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:50,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004212757] [2024-06-14 12:43:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:51,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004212757] [2024-06-14 12:43:51,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004212757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:51,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:51,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:51,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38726209] [2024-06-14 12:43:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:51,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:51,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:51,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:51,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 184 transitions, 2350 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:51,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:51,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:51,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:51,588 INFO L124 PetriNetUnfolderBase]: 540/988 cut-off events. [2024-06-14 12:43:51,588 INFO L125 PetriNetUnfolderBase]: For 38307/38307 co-relation queries the response was YES. [2024-06-14 12:43:51,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 988 events. 540/988 cut-off events. For 38307/38307 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4932 event pairs, 107 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 6913. Up to 859 conditions per place. [2024-06-14 12:43:51,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-06-14 12:43:51,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 202 transitions, 2813 flow [2024-06-14 12:43:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:43:51,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:43:51,595 INFO L175 Difference]: Start difference. First operand has 169 places, 184 transitions, 2350 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:43:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 202 transitions, 2813 flow [2024-06-14 12:43:51,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 202 transitions, 2776 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:43:51,662 INFO L231 Difference]: Finished difference. Result has 177 places, 186 transitions, 2434 flow [2024-06-14 12:43:51,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2434, PETRI_PLACES=177, PETRI_TRANSITIONS=186} [2024-06-14 12:43:51,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-14 12:43:51,663 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 186 transitions, 2434 flow [2024-06-14 12:43:51,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:51,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:51,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:43:51,663 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:51,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1169333008, now seen corresponding path program 5 times [2024-06-14 12:43:51,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:51,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457329924] [2024-06-14 12:43:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457329924] [2024-06-14 12:43:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457329924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:52,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927266381] [2024-06-14 12:43:52,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:52,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:52,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:52,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 186 transitions, 2434 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:52,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:52,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:52,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:52,763 INFO L124 PetriNetUnfolderBase]: 546/998 cut-off events. [2024-06-14 12:43:52,763 INFO L125 PetriNetUnfolderBase]: For 40513/40513 co-relation queries the response was YES. [2024-06-14 12:43:52,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 998 events. 546/998 cut-off events. For 40513/40513 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4987 event pairs, 86 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7145. Up to 729 conditions per place. [2024-06-14 12:43:52,770 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 62 changer transitions 0/210 dead transitions. [2024-06-14 12:43:52,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 210 transitions, 3044 flow [2024-06-14 12:43:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:43:52,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-14 12:43:52,771 INFO L175 Difference]: Start difference. First operand has 177 places, 186 transitions, 2434 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:43:52,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 210 transitions, 3044 flow [2024-06-14 12:43:52,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 210 transitions, 2962 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:52,853 INFO L231 Difference]: Finished difference. Result has 180 places, 188 transitions, 2533 flow [2024-06-14 12:43:52,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=180, PETRI_TRANSITIONS=188} [2024-06-14 12:43:52,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-14 12:43:52,854 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 188 transitions, 2533 flow [2024-06-14 12:43:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:52,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:52,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:43:52,854 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:52,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1174839383, now seen corresponding path program 8 times [2024-06-14 12:43:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341887774] [2024-06-14 12:43:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:53,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341887774] [2024-06-14 12:43:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341887774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:53,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:53,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:53,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111037196] [2024-06-14 12:43:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:53,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:53,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:53,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:53,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 188 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:53,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:53,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:53,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:54,202 INFO L124 PetriNetUnfolderBase]: 566/1045 cut-off events. [2024-06-14 12:43:54,202 INFO L125 PetriNetUnfolderBase]: For 53812/53812 co-relation queries the response was YES. [2024-06-14 12:43:54,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 1045 events. 566/1045 cut-off events. For 53812/53812 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5342 event pairs, 107 based on Foata normal form. 16/1061 useless extension candidates. Maximal degree in co-relation 7308. Up to 841 conditions per place. [2024-06-14 12:43:54,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 38 changer transitions 13/213 dead transitions. [2024-06-14 12:43:54,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 213 transitions, 3057 flow [2024-06-14 12:43:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:43:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-14 12:43:54,209 INFO L175 Difference]: Start difference. First operand has 180 places, 188 transitions, 2533 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:43:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 213 transitions, 3057 flow [2024-06-14 12:43:54,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 213 transitions, 2878 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:54,290 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 2374 flow [2024-06-14 12:43:54,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2374, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2024-06-14 12:43:54,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-14 12:43:54,291 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 2374 flow [2024-06-14 12:43:54,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:54,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:54,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:54,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:43:54,291 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:54,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash -493553904, now seen corresponding path program 6 times [2024-06-14 12:43:54,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:54,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153531205] [2024-06-14 12:43:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:54,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153531205] [2024-06-14 12:43:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153531205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376218126] [2024-06-14 12:43:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:55,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:55,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 2374 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:55,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:55,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:55,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:55,456 INFO L124 PetriNetUnfolderBase]: 534/985 cut-off events. [2024-06-14 12:43:55,456 INFO L125 PetriNetUnfolderBase]: For 44678/44678 co-relation queries the response was YES. [2024-06-14 12:43:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 985 events. 534/985 cut-off events. For 44678/44678 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4943 event pairs, 90 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 7023. Up to 769 conditions per place. [2024-06-14 12:43:55,463 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-14 12:43:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 204 transitions, 2878 flow [2024-06-14 12:43:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:43:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-14 12:43:55,464 INFO L175 Difference]: Start difference. First operand has 185 places, 183 transitions, 2374 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:43:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 204 transitions, 2878 flow [2024-06-14 12:43:55,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 204 transitions, 2800 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:55,547 INFO L231 Difference]: Finished difference. Result has 188 places, 185 transitions, 2457 flow [2024-06-14 12:43:55,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=188, PETRI_TRANSITIONS=185} [2024-06-14 12:43:55,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 12:43:55,547 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 185 transitions, 2457 flow [2024-06-14 12:43:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:55,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:55,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:43:55,548 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:55,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1418827828, now seen corresponding path program 7 times [2024-06-14 12:43:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:55,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911199250] [2024-06-14 12:43:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911199250] [2024-06-14 12:43:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911199250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:56,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:56,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56325580] [2024-06-14 12:43:56,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:56,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:56,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 185 transitions, 2457 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:56,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:56,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:56,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:56,868 INFO L124 PetriNetUnfolderBase]: 530/978 cut-off events. [2024-06-14 12:43:56,868 INFO L125 PetriNetUnfolderBase]: For 42810/42810 co-relation queries the response was YES. [2024-06-14 12:43:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 978 events. 530/978 cut-off events. For 42810/42810 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4925 event pairs, 90 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 6921. Up to 777 conditions per place. [2024-06-14 12:43:56,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 48 changer transitions 0/205 dead transitions. [2024-06-14 12:43:56,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 205 transitions, 2915 flow [2024-06-14 12:43:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:43:56,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-14 12:43:56,875 INFO L175 Difference]: Start difference. First operand has 188 places, 185 transitions, 2457 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:43:56,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 205 transitions, 2915 flow [2024-06-14 12:43:56,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 205 transitions, 2764 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:56,957 INFO L231 Difference]: Finished difference. Result has 192 places, 186 transitions, 2422 flow [2024-06-14 12:43:56,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2422, PETRI_PLACES=192, PETRI_TRANSITIONS=186} [2024-06-14 12:43:56,958 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-14 12:43:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 186 transitions, 2422 flow [2024-06-14 12:43:56,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:56,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:56,958 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 12:43:56,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:43:56,958 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:56,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1169477003, now seen corresponding path program 9 times [2024-06-14 12:43:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127954970] [2024-06-14 12:43:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127954970] [2024-06-14 12:43:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127954970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:57,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:57,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486923524] [2024-06-14 12:43:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:57,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:57,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:57,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:57,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 186 transitions, 2422 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:57,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:57,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:57,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:58,072 INFO L124 PetriNetUnfolderBase]: 547/1017 cut-off events. [2024-06-14 12:43:58,072 INFO L125 PetriNetUnfolderBase]: For 53771/53771 co-relation queries the response was YES. [2024-06-14 12:43:58,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1017 events. 547/1017 cut-off events. For 53771/53771 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5206 event pairs, 109 based on Foata normal form. 14/1031 useless extension candidates. Maximal degree in co-relation 6933. Up to 824 conditions per place. [2024-06-14 12:43:58,078 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 35 changer transitions 12/208 dead transitions. [2024-06-14 12:43:58,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 2922 flow [2024-06-14 12:43:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:43:58,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:43:58,079 INFO L175 Difference]: Start difference. First operand has 192 places, 186 transitions, 2422 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:43:58,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 2922 flow [2024-06-14 12:43:58,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 208 transitions, 2798 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:58,168 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 2306 flow [2024-06-14 12:43:58,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-06-14 12:43:58,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 12:43:58,169 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 2306 flow [2024-06-14 12:43:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:58,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:58,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:58,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:43:58,169 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:58,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1866543528, now seen corresponding path program 8 times [2024-06-14 12:43:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732771339] [2024-06-14 12:43:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732771339] [2024-06-14 12:43:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732771339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:58,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:58,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329258405] [2024-06-14 12:43:58,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:58,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:43:58,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 2306 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:58,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:43:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:59,234 INFO L124 PetriNetUnfolderBase]: 519/962 cut-off events. [2024-06-14 12:43:59,234 INFO L125 PetriNetUnfolderBase]: For 42909/42909 co-relation queries the response was YES. [2024-06-14 12:43:59,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 962 events. 519/962 cut-off events. For 42909/42909 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4827 event pairs, 87 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6688. Up to 564 conditions per place. [2024-06-14 12:43:59,241 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 98 changer transitions 0/200 dead transitions. [2024-06-14 12:43:59,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 200 transitions, 2880 flow [2024-06-14 12:43:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:43:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:43:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:43:59,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:43:59,242 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 2306 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:43:59,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 200 transitions, 2880 flow [2024-06-14 12:43:59,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 200 transitions, 2796 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:59,318 INFO L231 Difference]: Finished difference. Result has 194 places, 183 transitions, 2473 flow [2024-06-14 12:43:59,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2473, PETRI_PLACES=194, PETRI_TRANSITIONS=183} [2024-06-14 12:43:59,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 12:43:59,319 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 183 transitions, 2473 flow [2024-06-14 12:43:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:59,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:59,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:59,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:43:59,319 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:43:59,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash -616991286, now seen corresponding path program 9 times [2024-06-14 12:43:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:59,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374425563] [2024-06-14 12:43:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374425563] [2024-06-14 12:44:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374425563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948958405] [2024-06-14 12:44:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:00,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:00,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 183 transitions, 2473 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:00,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:00,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:00,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:00,436 INFO L124 PetriNetUnfolderBase]: 525/972 cut-off events. [2024-06-14 12:44:00,436 INFO L125 PetriNetUnfolderBase]: For 45124/45124 co-relation queries the response was YES. [2024-06-14 12:44:00,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 972 events. 525/972 cut-off events. For 45124/45124 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4885 event pairs, 87 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6991. Up to 753 conditions per place. [2024-06-14 12:44:00,442 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 57 changer transitions 0/199 dead transitions. [2024-06-14 12:44:00,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 199 transitions, 2947 flow [2024-06-14 12:44:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:44:00,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 12:44:00,443 INFO L175 Difference]: Start difference. First operand has 194 places, 183 transitions, 2473 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:44:00,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 199 transitions, 2947 flow [2024-06-14 12:44:00,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 199 transitions, 2780 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:00,534 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 2480 flow [2024-06-14 12:44:00,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2480, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-06-14 12:44:00,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-14 12:44:00,535 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 2480 flow [2024-06-14 12:44:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:00,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:00,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:00,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:44:00,535 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:00,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash -617135436, now seen corresponding path program 10 times [2024-06-14 12:44:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903134749] [2024-06-14 12:44:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903134749] [2024-06-14 12:44:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903134749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:01,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:01,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299964090] [2024-06-14 12:44:01,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:01,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:01,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 2480 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:01,706 INFO L124 PetriNetUnfolderBase]: 531/982 cut-off events. [2024-06-14 12:44:01,706 INFO L125 PetriNetUnfolderBase]: For 44525/44525 co-relation queries the response was YES. [2024-06-14 12:44:01,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 982 events. 531/982 cut-off events. For 44525/44525 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4955 event pairs, 94 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 6953. Up to 761 conditions per place. [2024-06-14 12:44:01,712 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 61 changer transitions 0/201 dead transitions. [2024-06-14 12:44:01,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 201 transitions, 2960 flow [2024-06-14 12:44:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:44:01,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:44:01,713 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 2480 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:44:01,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 201 transitions, 2960 flow [2024-06-14 12:44:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 2817 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:01,795 INFO L231 Difference]: Finished difference. Result has 196 places, 187 transitions, 2521 flow [2024-06-14 12:44:01,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2521, PETRI_PLACES=196, PETRI_TRANSITIONS=187} [2024-06-14 12:44:01,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-14 12:44:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 187 transitions, 2521 flow [2024-06-14 12:44:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:01,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:01,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:44:01,795 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402023, now seen corresponding path program 10 times [2024-06-14 12:44:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760515650] [2024-06-14 12:44:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760515650] [2024-06-14 12:44:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760515650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699826609] [2024-06-14 12:44:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:02,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:02,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 187 transitions, 2521 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:02,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:02,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:02,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:02,815 INFO L124 PetriNetUnfolderBase]: 557/1037 cut-off events. [2024-06-14 12:44:02,815 INFO L125 PetriNetUnfolderBase]: For 51644/51644 co-relation queries the response was YES. [2024-06-14 12:44:02,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 1037 events. 557/1037 cut-off events. For 51644/51644 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5298 event pairs, 84 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 7483. Up to 567 conditions per place. [2024-06-14 12:44:02,821 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 91 changer transitions 0/215 dead transitions. [2024-06-14 12:44:02,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 215 transitions, 3249 flow [2024-06-14 12:44:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-14 12:44:02,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-14 12:44:02,822 INFO L175 Difference]: Start difference. First operand has 196 places, 187 transitions, 2521 flow. Second operand 9 states and 128 transitions. [2024-06-14 12:44:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 215 transitions, 3249 flow [2024-06-14 12:44:02,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 215 transitions, 3080 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:02,912 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 2553 flow [2024-06-14 12:44:02,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2553, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2024-06-14 12:44:02,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:44:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 2553 flow [2024-06-14 12:44:02,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:44:02,913 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:02,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1794174552, now seen corresponding path program 11 times [2024-06-14 12:44:02,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111587090] [2024-06-14 12:44:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:03,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111587090] [2024-06-14 12:44:03,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111587090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:03,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:03,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:03,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839043788] [2024-06-14 12:44:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:03,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:03,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:03,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:03,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 2553 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:03,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:03,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:03,888 INFO L124 PetriNetUnfolderBase]: 563/1047 cut-off events. [2024-06-14 12:44:03,889 INFO L125 PetriNetUnfolderBase]: For 51674/51674 co-relation queries the response was YES. [2024-06-14 12:44:03,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1047 events. 563/1047 cut-off events. For 51674/51674 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5383 event pairs, 104 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7626. Up to 716 conditions per place. [2024-06-14 12:44:03,894 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 92 changer transitions 0/211 dead transitions. [2024-06-14 12:44:03,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 3176 flow [2024-06-14 12:44:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:44:03,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:44:03,895 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 2553 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:44:03,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 3176 flow [2024-06-14 12:44:03,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 211 transitions, 2916 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:03,986 INFO L231 Difference]: Finished difference. Result has 197 places, 190 transitions, 2541 flow [2024-06-14 12:44:03,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2541, PETRI_PLACES=197, PETRI_TRANSITIONS=190} [2024-06-14 12:44:03,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:44:03,987 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 190 transitions, 2541 flow [2024-06-14 12:44:03,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:03,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:03,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:44:03,987 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:03,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1338076617, now seen corresponding path program 11 times [2024-06-14 12:44:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561604562] [2024-06-14 12:44:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:04,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561604562] [2024-06-14 12:44:04,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561604562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:04,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:04,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401241552] [2024-06-14 12:44:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:04,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:04,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 190 transitions, 2541 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:04,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:04,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:04,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:05,132 INFO L124 PetriNetUnfolderBase]: 558/1039 cut-off events. [2024-06-14 12:44:05,132 INFO L125 PetriNetUnfolderBase]: For 54671/54671 co-relation queries the response was YES. [2024-06-14 12:44:05,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1039 events. 558/1039 cut-off events. For 54671/54671 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5336 event pairs, 161 based on Foata normal form. 14/1053 useless extension candidates. Maximal degree in co-relation 6961. Up to 794 conditions per place. [2024-06-14 12:44:05,138 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 55 changer transitions 12/217 dead transitions. [2024-06-14 12:44:05,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 217 transitions, 3188 flow [2024-06-14 12:44:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:44:05,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-14 12:44:05,139 INFO L175 Difference]: Start difference. First operand has 197 places, 190 transitions, 2541 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:44:05,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 217 transitions, 3188 flow [2024-06-14 12:44:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 217 transitions, 2941 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:05,217 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 2400 flow [2024-06-14 12:44:05,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2400, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2024-06-14 12:44:05,217 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 12:44:05,217 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 2400 flow [2024-06-14 12:44:05,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:05,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:05,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:44:05,218 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1799686662, now seen corresponding path program 12 times [2024-06-14 12:44:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299506806] [2024-06-14 12:44:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:05,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:06,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299506806] [2024-06-14 12:44:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299506806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:06,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975535225] [2024-06-14 12:44:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:06,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:06,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:06,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 2400 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:06,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:06,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:06,490 INFO L124 PetriNetUnfolderBase]: 538/999 cut-off events. [2024-06-14 12:44:06,490 INFO L125 PetriNetUnfolderBase]: For 40746/40746 co-relation queries the response was YES. [2024-06-14 12:44:06,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 999 events. 538/999 cut-off events. For 40746/40746 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5089 event pairs, 89 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6718. Up to 808 conditions per place. [2024-06-14 12:44:06,496 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 48 changer transitions 0/208 dead transitions. [2024-06-14 12:44:06,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 208 transitions, 2928 flow [2024-06-14 12:44:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:44:06,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:44:06,503 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 2400 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:44:06,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 208 transitions, 2928 flow [2024-06-14 12:44:06,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 208 transitions, 2827 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:06,579 INFO L231 Difference]: Finished difference. Result has 203 places, 192 transitions, 2484 flow [2024-06-14 12:44:06,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2484, PETRI_PLACES=203, PETRI_TRANSITIONS=192} [2024-06-14 12:44:06,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:44:06,579 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 192 transitions, 2484 flow [2024-06-14 12:44:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:06,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:06,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:06,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:44:06,580 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:06,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1818057118, now seen corresponding path program 13 times [2024-06-14 12:44:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:06,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684661821] [2024-06-14 12:44:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684661821] [2024-06-14 12:44:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684661821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:07,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632624090] [2024-06-14 12:44:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:07,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:07,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:07,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:07,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 192 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:07,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:07,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:07,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:07,947 INFO L124 PetriNetUnfolderBase]: 534/993 cut-off events. [2024-06-14 12:44:07,947 INFO L125 PetriNetUnfolderBase]: For 40079/40079 co-relation queries the response was YES. [2024-06-14 12:44:07,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 993 events. 534/993 cut-off events. For 40079/40079 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5057 event pairs, 85 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6585. Up to 802 conditions per place. [2024-06-14 12:44:07,974 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 50 changer transitions 0/210 dead transitions. [2024-06-14 12:44:07,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 210 transitions, 2940 flow [2024-06-14 12:44:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:44:07,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-14 12:44:07,975 INFO L175 Difference]: Start difference. First operand has 203 places, 192 transitions, 2484 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:44:07,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 210 transitions, 2940 flow [2024-06-14 12:44:08,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 2807 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:08,070 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2456 flow [2024-06-14 12:44:08,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2456, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-14 12:44:08,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 12:44:08,071 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2456 flow [2024-06-14 12:44:08,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:08,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:08,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:44:08,071 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:08,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1823626888, now seen corresponding path program 14 times [2024-06-14 12:44:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736576415] [2024-06-14 12:44:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736576415] [2024-06-14 12:44:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736576415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:44:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014819795] [2024-06-14 12:44:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:44:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:44:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:44:08,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:08,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:08,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:08,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:08,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:09,188 INFO L124 PetriNetUnfolderBase]: 540/1004 cut-off events. [2024-06-14 12:44:09,188 INFO L125 PetriNetUnfolderBase]: For 41647/41647 co-relation queries the response was YES. [2024-06-14 12:44:09,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6756 conditions, 1004 events. 540/1004 cut-off events. For 41647/41647 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5158 event pairs, 99 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6670. Up to 780 conditions per place. [2024-06-14 12:44:09,194 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 64 changer transitions 2/213 dead transitions. [2024-06-14 12:44:09,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 213 transitions, 2991 flow [2024-06-14 12:44:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:44:09,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:44:09,195 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2456 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:44:09,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 213 transitions, 2991 flow [2024-06-14 12:44:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 213 transitions, 2874 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:09,289 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 2533 flow [2024-06-14 12:44:09,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2533, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-06-14 12:44:09,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 12:44:09,290 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 2533 flow [2024-06-14 12:44:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:09,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:09,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:09,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:44:09,290 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:09,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1818264508, now seen corresponding path program 15 times [2024-06-14 12:44:09,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:09,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674403359] [2024-06-14 12:44:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:09,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:10,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:10,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674403359] [2024-06-14 12:44:10,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674403359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:10,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:10,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498176660] [2024-06-14 12:44:10,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:10,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:10,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:10,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:10,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:10,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:10,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:10,488 INFO L124 PetriNetUnfolderBase]: 546/1013 cut-off events. [2024-06-14 12:44:10,488 INFO L125 PetriNetUnfolderBase]: For 44583/44583 co-relation queries the response was YES. [2024-06-14 12:44:10,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6915 conditions, 1013 events. 546/1013 cut-off events. For 44583/44583 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5173 event pairs, 79 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 6828. Up to 774 conditions per place. [2024-06-14 12:44:10,495 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 61 changer transitions 0/213 dead transitions. [2024-06-14 12:44:10,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 3051 flow [2024-06-14 12:44:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:44:10,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-14 12:44:10,496 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 2533 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:44:10,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 3051 flow [2024-06-14 12:44:10,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 2886 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:10,606 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 2560 flow [2024-06-14 12:44:10,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2560, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2024-06-14 12:44:10,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:44:10,607 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 2560 flow [2024-06-14 12:44:10,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:10,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:10,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:44:10,607 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:10,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1799680927, now seen corresponding path program 12 times [2024-06-14 12:44:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091229930] [2024-06-14 12:44:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091229930] [2024-06-14 12:44:11,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091229930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:11,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:11,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614787836] [2024-06-14 12:44:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 2560 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:11,809 INFO L124 PetriNetUnfolderBase]: 570/1065 cut-off events. [2024-06-14 12:44:11,809 INFO L125 PetriNetUnfolderBase]: For 58941/58941 co-relation queries the response was YES. [2024-06-14 12:44:11,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7060 conditions, 1065 events. 570/1065 cut-off events. For 58941/58941 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5514 event pairs, 91 based on Foata normal form. 14/1079 useless extension candidates. Maximal degree in co-relation 6973. Up to 788 conditions per place. [2024-06-14 12:44:11,816 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 46 changer transitions 17/218 dead transitions. [2024-06-14 12:44:11,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 218 transitions, 3083 flow [2024-06-14 12:44:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:44:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-14 12:44:11,817 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 2560 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:44:11,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 218 transitions, 3083 flow [2024-06-14 12:44:11,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 218 transitions, 2920 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:11,913 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 2379 flow [2024-06-14 12:44:11,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2379, PETRI_PLACES=211, PETRI_TRANSITIONS=187} [2024-06-14 12:44:11,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 12:44:11,913 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 2379 flow [2024-06-14 12:44:11,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:11,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:11,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:44:11,914 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:11,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash 922021572, now seen corresponding path program 1 times [2024-06-14 12:44:11,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:11,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646371408] [2024-06-14 12:44:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:12,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646371408] [2024-06-14 12:44:12,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646371408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:12,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:12,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313398725] [2024-06-14 12:44:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:12,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:12,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:12,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 187 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:12,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:12,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:12,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:13,125 INFO L124 PetriNetUnfolderBase]: 524/983 cut-off events. [2024-06-14 12:44:13,125 INFO L125 PetriNetUnfolderBase]: For 43802/43802 co-relation queries the response was YES. [2024-06-14 12:44:13,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 983 events. 524/983 cut-off events. For 43802/43802 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5025 event pairs, 167 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6481. Up to 944 conditions per place. [2024-06-14 12:44:13,131 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 14 changer transitions 0/199 dead transitions. [2024-06-14 12:44:13,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 199 transitions, 2813 flow [2024-06-14 12:44:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:44:13,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:44:13,132 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 2379 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:44:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 199 transitions, 2813 flow [2024-06-14 12:44:13,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 199 transitions, 2713 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:13,213 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 2329 flow [2024-06-14 12:44:13,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2329, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2024-06-14 12:44:13,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 12:44:13,214 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 2329 flow [2024-06-14 12:44:13,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:13,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:13,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:44:13,214 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -370303064, now seen corresponding path program 16 times [2024-06-14 12:44:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47543812] [2024-06-14 12:44:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47543812] [2024-06-14 12:44:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47543812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:13,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:13,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043077508] [2024-06-14 12:44:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:13,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:13,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 2329 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:13,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:13,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:13,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:14,319 INFO L124 PetriNetUnfolderBase]: 540/1009 cut-off events. [2024-06-14 12:44:14,319 INFO L125 PetriNetUnfolderBase]: For 43610/43610 co-relation queries the response was YES. [2024-06-14 12:44:14,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6790 conditions, 1009 events. 540/1009 cut-off events. For 43610/43610 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5157 event pairs, 163 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6705. Up to 918 conditions per place. [2024-06-14 12:44:14,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 28 changer transitions 0/209 dead transitions. [2024-06-14 12:44:14,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 209 transitions, 3016 flow [2024-06-14 12:44:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:44:14,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:44:14,326 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 2329 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:44:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 209 transitions, 3016 flow [2024-06-14 12:44:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 209 transitions, 2976 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:14,392 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2478 flow [2024-06-14 12:44:14,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2478, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-14 12:44:14,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 12:44:14,393 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2478 flow [2024-06-14 12:44:14,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:14,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:14,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:44:14,393 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:14,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1170594799, now seen corresponding path program 13 times [2024-06-14 12:44:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703148040] [2024-06-14 12:44:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:15,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:15,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703148040] [2024-06-14 12:44:15,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703148040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:15,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:15,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:15,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257864431] [2024-06-14 12:44:15,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:15,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:15,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:15,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:15,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:15,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:15,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:15,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:15,559 INFO L124 PetriNetUnfolderBase]: 564/1061 cut-off events. [2024-06-14 12:44:15,559 INFO L125 PetriNetUnfolderBase]: For 59355/59355 co-relation queries the response was YES. [2024-06-14 12:44:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 1061 events. 564/1061 cut-off events. For 59355/59355 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5558 event pairs, 176 based on Foata normal form. 14/1075 useless extension candidates. Maximal degree in co-relation 6959. Up to 951 conditions per place. [2024-06-14 12:44:15,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 15 changer transitions 13/213 dead transitions. [2024-06-14 12:44:15,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 3006 flow [2024-06-14 12:44:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:44:15,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 12:44:15,566 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2478 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:44:15,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 3006 flow [2024-06-14 12:44:15,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 2924 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 12:44:15,646 INFO L231 Difference]: Finished difference. Result has 212 places, 188 transitions, 2370 flow [2024-06-14 12:44:15,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2370, PETRI_PLACES=212, PETRI_TRANSITIONS=188} [2024-06-14 12:44:15,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:44:15,646 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 188 transitions, 2370 flow [2024-06-14 12:44:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:15,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:15,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:15,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:44:15,647 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:15,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash -564027148, now seen corresponding path program 2 times [2024-06-14 12:44:15,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:15,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483338573] [2024-06-14 12:44:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:15,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483338573] [2024-06-14 12:44:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483338573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535904735] [2024-06-14 12:44:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:16,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:16,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:16,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 188 transitions, 2370 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:16,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:16,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:16,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:16,802 INFO L124 PetriNetUnfolderBase]: 532/1005 cut-off events. [2024-06-14 12:44:16,802 INFO L125 PetriNetUnfolderBase]: For 46323/46323 co-relation queries the response was YES. [2024-06-14 12:44:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 1005 events. 532/1005 cut-off events. For 46323/46323 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5212 event pairs, 172 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 6655. Up to 959 conditions per place. [2024-06-14 12:44:16,808 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 182 selfloop transitions, 17 changer transitions 0/201 dead transitions. [2024-06-14 12:44:16,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 201 transitions, 2821 flow [2024-06-14 12:44:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 12:44:16,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-14 12:44:16,809 INFO L175 Difference]: Start difference. First operand has 212 places, 188 transitions, 2370 flow. Second operand 9 states and 101 transitions. [2024-06-14 12:44:16,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 201 transitions, 2821 flow [2024-06-14 12:44:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 201 transitions, 2785 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:16,900 INFO L231 Difference]: Finished difference. Result has 214 places, 190 transitions, 2408 flow [2024-06-14 12:44:16,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2408, PETRI_PLACES=214, PETRI_TRANSITIONS=190} [2024-06-14 12:44:16,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-14 12:44:16,901 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 190 transitions, 2408 flow [2024-06-14 12:44:16,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:16,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:16,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:44:16,901 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:16,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 887008324, now seen corresponding path program 17 times [2024-06-14 12:44:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:16,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830801440] [2024-06-14 12:44:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:17,576 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 12:44:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830801440] [2024-06-14 12:44:17,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830801440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:17,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:17,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:17,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602968836] [2024-06-14 12:44:17,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:17,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:17,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:17,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:17,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 190 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:18,034 INFO L124 PetriNetUnfolderBase]: 528/999 cut-off events. [2024-06-14 12:44:18,034 INFO L125 PetriNetUnfolderBase]: For 45408/45408 co-relation queries the response was YES. [2024-06-14 12:44:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 999 events. 528/999 cut-off events. For 45408/45408 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5189 event pairs, 160 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6535. Up to 915 conditions per place. [2024-06-14 12:44:18,041 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 27 changer transitions 1/206 dead transitions. [2024-06-14 12:44:18,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 206 transitions, 2858 flow [2024-06-14 12:44:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:44:18,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:44:18,042 INFO L175 Difference]: Start difference. First operand has 214 places, 190 transitions, 2408 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:44:18,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 206 transitions, 2858 flow [2024-06-14 12:44:18,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 206 transitions, 2785 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:44:18,143 INFO L231 Difference]: Finished difference. Result has 217 places, 190 transitions, 2394 flow [2024-06-14 12:44:18,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2394, PETRI_PLACES=217, PETRI_TRANSITIONS=190} [2024-06-14 12:44:18,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:44:18,144 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 190 transitions, 2394 flow [2024-06-14 12:44:18,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:18,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:18,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:44:18,144 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:18,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash 354404143, now seen corresponding path program 14 times [2024-06-14 12:44:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952212864] [2024-06-14 12:44:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:18,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952212864] [2024-06-14 12:44:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952212864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:18,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428656760] [2024-06-14 12:44:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:18,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:18,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 190 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:18,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:18,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:18,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:19,311 INFO L124 PetriNetUnfolderBase]: 509/966 cut-off events. [2024-06-14 12:44:19,311 INFO L125 PetriNetUnfolderBase]: For 44241/44241 co-relation queries the response was YES. [2024-06-14 12:44:19,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 966 events. 509/966 cut-off events. For 44241/44241 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5025 event pairs, 150 based on Foata normal form. 14/980 useless extension candidates. Maximal degree in co-relation 5685. Up to 844 conditions per place. [2024-06-14 12:44:19,317 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 18 changer transitions 14/210 dead transitions. [2024-06-14 12:44:19,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 210 transitions, 2896 flow [2024-06-14 12:44:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:44:19,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:44:19,318 INFO L175 Difference]: Start difference. First operand has 217 places, 190 transitions, 2394 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:44:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 210 transitions, 2896 flow [2024-06-14 12:44:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 210 transitions, 2733 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:19,386 INFO L231 Difference]: Finished difference. Result has 217 places, 184 transitions, 2199 flow [2024-06-14 12:44:19,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=217, PETRI_TRANSITIONS=184} [2024-06-14 12:44:19,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:44:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 184 transitions, 2199 flow [2024-06-14 12:44:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:19,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:19,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:19,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:44:19,387 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:19,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash -637775292, now seen corresponding path program 3 times [2024-06-14 12:44:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:19,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778500790] [2024-06-14 12:44:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778500790] [2024-06-14 12:44:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778500790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:20,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089040018] [2024-06-14 12:44:20,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:20,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:20,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:20,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:20,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:20,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 184 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:20,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:20,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:20,486 INFO L124 PetriNetUnfolderBase]: 471/892 cut-off events. [2024-06-14 12:44:20,486 INFO L125 PetriNetUnfolderBase]: For 28298/28298 co-relation queries the response was YES. [2024-06-14 12:44:20,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5314 conditions, 892 events. 471/892 cut-off events. For 28298/28298 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4527 event pairs, 148 based on Foata normal form. 2/894 useless extension candidates. Maximal degree in co-relation 5224. Up to 858 conditions per place. [2024-06-14 12:44:20,491 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 180 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2024-06-14 12:44:20,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 195 transitions, 2627 flow [2024-06-14 12:44:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:44:20,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:44:20,492 INFO L175 Difference]: Start difference. First operand has 217 places, 184 transitions, 2199 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:44:20,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 195 transitions, 2627 flow [2024-06-14 12:44:20,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 195 transitions, 2481 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:20,577 INFO L231 Difference]: Finished difference. Result has 214 places, 185 transitions, 2105 flow [2024-06-14 12:44:20,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2105, PETRI_PLACES=214, PETRI_TRANSITIONS=185} [2024-06-14 12:44:20,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-14 12:44:20,577 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 185 transitions, 2105 flow [2024-06-14 12:44:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:44:20,578 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:20,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -904355608, now seen corresponding path program 4 times [2024-06-14 12:44:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894286968] [2024-06-14 12:44:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:21,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894286968] [2024-06-14 12:44:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894286968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:21,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351984637] [2024-06-14 12:44:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:21,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:21,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 185 transitions, 2105 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:21,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:21,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:21,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:21,681 INFO L124 PetriNetUnfolderBase]: 468/887 cut-off events. [2024-06-14 12:44:21,681 INFO L125 PetriNetUnfolderBase]: For 26060/26060 co-relation queries the response was YES. [2024-06-14 12:44:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 887 events. 468/887 cut-off events. For 26060/26060 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4504 event pairs, 138 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 4954. Up to 848 conditions per place. [2024-06-14 12:44:21,686 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 181 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2024-06-14 12:44:21,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 196 transitions, 2517 flow [2024-06-14 12:44:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:44:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:44:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:44:21,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:44:21,687 INFO L175 Difference]: Start difference. First operand has 214 places, 185 transitions, 2105 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:44:21,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 196 transitions, 2517 flow [2024-06-14 12:44:21,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2411 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:21,752 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 2029 flow [2024-06-14 12:44:21,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-06-14 12:44:21,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:44:21,753 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 2029 flow [2024-06-14 12:44:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:21,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:21,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:21,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:44:21,753 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:21,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -381282718, now seen corresponding path program 18 times [2024-06-14 12:44:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138212674] [2024-06-14 12:44:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138212674] [2024-06-14 12:44:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138212674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:22,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910539846] [2024-06-14 12:44:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:22,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:22,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:22,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:22,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:22,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:22,831 INFO L124 PetriNetUnfolderBase]: 464/880 cut-off events. [2024-06-14 12:44:22,831 INFO L125 PetriNetUnfolderBase]: For 23231/23231 co-relation queries the response was YES. [2024-06-14 12:44:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 880 events. 464/880 cut-off events. For 23231/23231 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4468 event pairs, 140 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 4736. Up to 832 conditions per place. [2024-06-14 12:44:22,836 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 17 changer transitions 0/198 dead transitions. [2024-06-14 12:44:22,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 198 transitions, 2449 flow [2024-06-14 12:44:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:44:22,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:44:22,837 INFO L175 Difference]: Start difference. First operand has 212 places, 185 transitions, 2029 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:44:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 198 transitions, 2449 flow [2024-06-14 12:44:22,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 198 transitions, 2332 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:22,903 INFO L231 Difference]: Finished difference. Result has 213 places, 185 transitions, 1951 flow [2024-06-14 12:44:22,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1951, PETRI_PLACES=213, PETRI_TRANSITIONS=185} [2024-06-14 12:44:22,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 12:44:22,903 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 185 transitions, 1951 flow [2024-06-14 12:44:22,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:22,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:22,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:44:22,904 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:22,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1998142108, now seen corresponding path program 1 times [2024-06-14 12:44:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303130369] [2024-06-14 12:44:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:23,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303130369] [2024-06-14 12:44:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303130369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:23,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779044353] [2024-06-14 12:44:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:23,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:23,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:23,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 185 transitions, 1951 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:23,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:24,117 INFO L124 PetriNetUnfolderBase]: 526/1012 cut-off events. [2024-06-14 12:44:24,117 INFO L125 PetriNetUnfolderBase]: For 47658/47658 co-relation queries the response was YES. [2024-06-14 12:44:24,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1012 events. 526/1012 cut-off events. For 47658/47658 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5389 event pairs, 111 based on Foata normal form. 8/1020 useless extension candidates. Maximal degree in co-relation 5618. Up to 522 conditions per place. [2024-06-14 12:44:24,123 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 51 changer transitions 15/221 dead transitions. [2024-06-14 12:44:24,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 221 transitions, 2651 flow [2024-06-14 12:44:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:44:24,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-14 12:44:24,123 INFO L175 Difference]: Start difference. First operand has 213 places, 185 transitions, 1951 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:44:24,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 221 transitions, 2651 flow [2024-06-14 12:44:24,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 221 transitions, 2550 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:24,219 INFO L231 Difference]: Finished difference. Result has 217 places, 183 transitions, 1958 flow [2024-06-14 12:44:24,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=217, PETRI_TRANSITIONS=183} [2024-06-14 12:44:24,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:44:24,219 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 183 transitions, 1958 flow [2024-06-14 12:44:24,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:24,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:24,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:24,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:44:24,219 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:24,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1489987466, now seen corresponding path program 2 times [2024-06-14 12:44:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:24,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063596101] [2024-06-14 12:44:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:24,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063596101] [2024-06-14 12:44:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063596101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:24,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:24,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285002412] [2024-06-14 12:44:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:24,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:24,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:24,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 183 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:24,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:24,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:24,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:25,404 INFO L124 PetriNetUnfolderBase]: 547/1061 cut-off events. [2024-06-14 12:44:25,404 INFO L125 PetriNetUnfolderBase]: For 65492/65492 co-relation queries the response was YES. [2024-06-14 12:44:25,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6447 conditions, 1061 events. 547/1061 cut-off events. For 65492/65492 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5756 event pairs, 124 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 6355. Up to 699 conditions per place. [2024-06-14 12:44:25,411 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 52 changer transitions 10/216 dead transitions. [2024-06-14 12:44:25,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 216 transitions, 2634 flow [2024-06-14 12:44:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:44:25,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-14 12:44:25,413 INFO L175 Difference]: Start difference. First operand has 217 places, 183 transitions, 1958 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:44:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 216 transitions, 2634 flow [2024-06-14 12:44:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 216 transitions, 2545 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:25,563 INFO L231 Difference]: Finished difference. Result has 218 places, 182 transitions, 1969 flow [2024-06-14 12:44:25,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1969, PETRI_PLACES=218, PETRI_TRANSITIONS=182} [2024-06-14 12:44:25,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-14 12:44:25,564 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 182 transitions, 1969 flow [2024-06-14 12:44:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:25,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:25,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:44:25,565 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:25,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1490102786, now seen corresponding path program 3 times [2024-06-14 12:44:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782097933] [2024-06-14 12:44:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782097933] [2024-06-14 12:44:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782097933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:26,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:26,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424158482] [2024-06-14 12:44:26,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:26,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:26,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:26,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 182 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:26,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:26,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:26,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:26,987 INFO L124 PetriNetUnfolderBase]: 578/1130 cut-off events. [2024-06-14 12:44:26,987 INFO L125 PetriNetUnfolderBase]: For 93849/93849 co-relation queries the response was YES. [2024-06-14 12:44:26,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 1130 events. 578/1130 cut-off events. For 93849/93849 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6287 event pairs, 131 based on Foata normal form. 16/1146 useless extension candidates. Maximal degree in co-relation 7236. Up to 661 conditions per place. [2024-06-14 12:44:26,995 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 54 changer transitions 10/213 dead transitions. [2024-06-14 12:44:26,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 213 transitions, 2629 flow [2024-06-14 12:44:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:44:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:44:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 12:44:26,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094292803970223 [2024-06-14 12:44:26,996 INFO L175 Difference]: Start difference. First operand has 218 places, 182 transitions, 1969 flow. Second operand 13 states and 165 transitions. [2024-06-14 12:44:26,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 213 transitions, 2629 flow [2024-06-14 12:44:27,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 213 transitions, 2517 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:27,134 INFO L231 Difference]: Finished difference. Result has 219 places, 178 transitions, 1909 flow [2024-06-14 12:44:27,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1909, PETRI_PLACES=219, PETRI_TRANSITIONS=178} [2024-06-14 12:44:27,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:44:27,135 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 178 transitions, 1909 flow [2024-06-14 12:44:27,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:27,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:27,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:27,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:44:27,136 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1490107436, now seen corresponding path program 4 times [2024-06-14 12:44:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:27,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322495351] [2024-06-14 12:44:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:27,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:27,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322495351] [2024-06-14 12:44:27,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322495351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:27,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:27,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271097976] [2024-06-14 12:44:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:27,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:27,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:27,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 178 transitions, 1909 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:27,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:27,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:27,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:28,254 INFO L124 PetriNetUnfolderBase]: 527/1029 cut-off events. [2024-06-14 12:44:28,254 INFO L125 PetriNetUnfolderBase]: For 68818/68818 co-relation queries the response was YES. [2024-06-14 12:44:28,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 1029 events. 527/1029 cut-off events. For 68818/68818 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5575 event pairs, 128 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 6288. Up to 746 conditions per place. [2024-06-14 12:44:28,260 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 44 changer transitions 18/202 dead transitions. [2024-06-14 12:44:28,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 202 transitions, 2397 flow [2024-06-14 12:44:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:44:28,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-14 12:44:28,261 INFO L175 Difference]: Start difference. First operand has 219 places, 178 transitions, 1909 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:44:28,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 202 transitions, 2397 flow [2024-06-14 12:44:28,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 202 transitions, 2285 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:28,383 INFO L231 Difference]: Finished difference. Result has 217 places, 171 transitions, 1806 flow [2024-06-14 12:44:28,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1806, PETRI_PLACES=217, PETRI_TRANSITIONS=171} [2024-06-14 12:44:28,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:44:28,384 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 171 transitions, 1806 flow [2024-06-14 12:44:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:28,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:28,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:28,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:44:28,385 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:28,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1555448342, now seen corresponding path program 5 times [2024-06-14 12:44:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468394957] [2024-06-14 12:44:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468394957] [2024-06-14 12:44:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468394957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:29,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352732332] [2024-06-14 12:44:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:29,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:29,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:29,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 171 transitions, 1806 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:29,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:29,698 INFO L124 PetriNetUnfolderBase]: 484/945 cut-off events. [2024-06-14 12:44:29,698 INFO L125 PetriNetUnfolderBase]: For 52859/52859 co-relation queries the response was YES. [2024-06-14 12:44:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 945 events. 484/945 cut-off events. For 52859/52859 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5009 event pairs, 111 based on Foata normal form. 10/955 useless extension candidates. Maximal degree in co-relation 5330. Up to 750 conditions per place. [2024-06-14 12:44:29,703 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 30 changer transitions 13/192 dead transitions. [2024-06-14 12:44:29,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2266 flow [2024-06-14 12:44:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:44:29,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 12:44:29,704 INFO L175 Difference]: Start difference. First operand has 217 places, 171 transitions, 1806 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:44:29,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2266 flow [2024-06-14 12:44:29,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 192 transitions, 2146 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:29,791 INFO L231 Difference]: Finished difference. Result has 210 places, 167 transitions, 1700 flow [2024-06-14 12:44:29,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=210, PETRI_TRANSITIONS=167} [2024-06-14 12:44:29,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:44:29,792 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 167 transitions, 1700 flow [2024-06-14 12:44:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:29,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:29,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:29,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:44:29,792 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:29,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1883449106, now seen corresponding path program 6 times [2024-06-14 12:44:29,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:29,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177171547] [2024-06-14 12:44:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:29,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177171547] [2024-06-14 12:44:30,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177171547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:30,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:30,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104934338] [2024-06-14 12:44:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:30,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:30,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 167 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:30,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:30,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:30,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:31,422 INFO L124 PetriNetUnfolderBase]: 500/981 cut-off events. [2024-06-14 12:44:31,422 INFO L125 PetriNetUnfolderBase]: For 65116/65116 co-relation queries the response was YES. [2024-06-14 12:44:31,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 981 events. 500/981 cut-off events. For 65116/65116 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5239 event pairs, 116 based on Foata normal form. 8/989 useless extension candidates. Maximal degree in co-relation 5907. Up to 678 conditions per place. [2024-06-14 12:44:31,428 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 32 changer transitions 11/197 dead transitions. [2024-06-14 12:44:31,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2330 flow [2024-06-14 12:44:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:44:31,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:44:31,429 INFO L175 Difference]: Start difference. First operand has 210 places, 167 transitions, 1700 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:44:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2330 flow [2024-06-14 12:44:31,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 197 transitions, 2262 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:31,540 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1694 flow [2024-06-14 12:44:31,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1694, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2024-06-14 12:44:31,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:44:31,541 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1694 flow [2024-06-14 12:44:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:31,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:31,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:44:31,541 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:31,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1883329136, now seen corresponding path program 7 times [2024-06-14 12:44:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:31,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9227816] [2024-06-14 12:44:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:31,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:32,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:32,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9227816] [2024-06-14 12:44:32,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9227816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:32,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:32,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031474829] [2024-06-14 12:44:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:32,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:32,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:32,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:32,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:32,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:32,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:32,877 INFO L124 PetriNetUnfolderBase]: 465/912 cut-off events. [2024-06-14 12:44:32,877 INFO L125 PetriNetUnfolderBase]: For 52688/52688 co-relation queries the response was YES. [2024-06-14 12:44:32,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 912 events. 465/912 cut-off events. For 52688/52688 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4783 event pairs, 105 based on Foata normal form. 10/922 useless extension candidates. Maximal degree in co-relation 5117. Up to 702 conditions per place. [2024-06-14 12:44:32,882 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 29 changer transitions 17/190 dead transitions. [2024-06-14 12:44:32,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 190 transitions, 2160 flow [2024-06-14 12:44:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:44:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:44:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-14 12:44:32,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-14 12:44:32,891 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1694 flow. Second operand 13 states and 150 transitions. [2024-06-14 12:44:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 190 transitions, 2160 flow [2024-06-14 12:44:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 190 transitions, 2086 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:32,993 INFO L231 Difference]: Finished difference. Result has 210 places, 158 transitions, 1600 flow [2024-06-14 12:44:32,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1600, PETRI_PLACES=210, PETRI_TRANSITIONS=158} [2024-06-14 12:44:32,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 12:44:32,993 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 158 transitions, 1600 flow [2024-06-14 12:44:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:32,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:32,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:32,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:44:32,994 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:32,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1311928148, now seen corresponding path program 8 times [2024-06-14 12:44:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125792587] [2024-06-14 12:44:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:33,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125792587] [2024-06-14 12:44:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125792587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:33,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:33,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027316828] [2024-06-14 12:44:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:33,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:33,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 158 transitions, 1600 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:33,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:33,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:33,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:34,340 INFO L124 PetriNetUnfolderBase]: 472/921 cut-off events. [2024-06-14 12:44:34,341 INFO L125 PetriNetUnfolderBase]: For 67943/67943 co-relation queries the response was YES. [2024-06-14 12:44:34,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 921 events. 472/921 cut-off events. For 67943/67943 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4832 event pairs, 92 based on Foata normal form. 8/929 useless extension candidates. Maximal degree in co-relation 5728. Up to 466 conditions per place. [2024-06-14 12:44:34,345 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 64 changer transitions 18/192 dead transitions. [2024-06-14 12:44:34,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 192 transitions, 2240 flow [2024-06-14 12:44:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:44:34,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-14 12:44:34,346 INFO L175 Difference]: Start difference. First operand has 210 places, 158 transitions, 1600 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:44:34,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 192 transitions, 2240 flow [2024-06-14 12:44:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 192 transitions, 2141 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:44:34,455 INFO L231 Difference]: Finished difference. Result has 205 places, 156 transitions, 1622 flow [2024-06-14 12:44:34,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1622, PETRI_PLACES=205, PETRI_TRANSITIONS=156} [2024-06-14 12:44:34,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 12:44:34,455 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 156 transitions, 1622 flow [2024-06-14 12:44:34,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:34,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:34,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:44:34,456 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:34,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1956000312, now seen corresponding path program 9 times [2024-06-14 12:44:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444854621] [2024-06-14 12:44:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444854621] [2024-06-14 12:44:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444854621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680307433] [2024-06-14 12:44:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:35,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:35,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:35,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:35,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 156 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:35,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:35,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:35,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:35,679 INFO L124 PetriNetUnfolderBase]: 512/999 cut-off events. [2024-06-14 12:44:35,679 INFO L125 PetriNetUnfolderBase]: For 87256/87256 co-relation queries the response was YES. [2024-06-14 12:44:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6852 conditions, 999 events. 512/999 cut-off events. For 87256/87256 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5338 event pairs, 122 based on Foata normal form. 8/1007 useless extension candidates. Maximal degree in co-relation 6762. Up to 443 conditions per place. [2024-06-14 12:44:35,687 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 65 changer transitions 14/195 dead transitions. [2024-06-14 12:44:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 195 transitions, 2290 flow [2024-06-14 12:44:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 12:44:35,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-06-14 12:44:35,688 INFO L175 Difference]: Start difference. First operand has 205 places, 156 transitions, 1622 flow. Second operand 12 states and 161 transitions. [2024-06-14 12:44:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 195 transitions, 2290 flow [2024-06-14 12:44:35,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 2104 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:44:35,799 INFO L231 Difference]: Finished difference. Result has 203 places, 155 transitions, 1587 flow [2024-06-14 12:44:35,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1587, PETRI_PLACES=203, PETRI_TRANSITIONS=155} [2024-06-14 12:44:35,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:44:35,800 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 155 transitions, 1587 flow [2024-06-14 12:44:35,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:35,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:35,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:35,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:44:35,800 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:35,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:35,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1065520576, now seen corresponding path program 10 times [2024-06-14 12:44:35,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403977878] [2024-06-14 12:44:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403977878] [2024-06-14 12:44:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403977878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317368638] [2024-06-14 12:44:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:36,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:36,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:36,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 155 transitions, 1587 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:36,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:36,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:37,217 INFO L124 PetriNetUnfolderBase]: 525/1028 cut-off events. [2024-06-14 12:44:37,218 INFO L125 PetriNetUnfolderBase]: For 102891/102891 co-relation queries the response was YES. [2024-06-14 12:44:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7478 conditions, 1028 events. 525/1028 cut-off events. For 102891/102891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5573 event pairs, 127 based on Foata normal form. 8/1036 useless extension candidates. Maximal degree in co-relation 7392. Up to 662 conditions per place. [2024-06-14 12:44:37,224 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 71 changer transitions 7/188 dead transitions. [2024-06-14 12:44:37,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 188 transitions, 2199 flow [2024-06-14 12:44:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:44:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:44:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 175 transitions. [2024-06-14 12:44:37,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:44:37,225 INFO L175 Difference]: Start difference. First operand has 203 places, 155 transitions, 1587 flow. Second operand 14 states and 175 transitions. [2024-06-14 12:44:37,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 188 transitions, 2199 flow [2024-06-14 12:44:37,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 2004 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:37,380 INFO L231 Difference]: Finished difference. Result has 202 places, 153 transitions, 1523 flow [2024-06-14 12:44:37,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1523, PETRI_PLACES=202, PETRI_TRANSITIONS=153} [2024-06-14 12:44:37,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-14 12:44:37,381 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 153 transitions, 1523 flow [2024-06-14 12:44:37,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:37,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:37,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:37,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:44:37,381 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:37,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1897787892, now seen corresponding path program 11 times [2024-06-14 12:44:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464252731] [2024-06-14 12:44:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:38,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464252731] [2024-06-14 12:44:38,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464252731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:38,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:38,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029541218] [2024-06-14 12:44:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:38,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:38,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 153 transitions, 1523 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:38,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:38,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:38,645 INFO L124 PetriNetUnfolderBase]: 494/967 cut-off events. [2024-06-14 12:44:38,645 INFO L125 PetriNetUnfolderBase]: For 89989/89989 co-relation queries the response was YES. [2024-06-14 12:44:38,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 967 events. 494/967 cut-off events. For 89989/89989 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5156 event pairs, 110 based on Foata normal form. 10/977 useless extension candidates. Maximal degree in co-relation 6563. Up to 638 conditions per place. [2024-06-14 12:44:38,651 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 68 changer transitions 13/176 dead transitions. [2024-06-14 12:44:38,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 176 transitions, 1957 flow [2024-06-14 12:44:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:44:38,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 12:44:38,652 INFO L175 Difference]: Start difference. First operand has 202 places, 153 transitions, 1523 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:44:38,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 176 transitions, 1957 flow [2024-06-14 12:44:38,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 176 transitions, 1811 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-14 12:44:38,752 INFO L231 Difference]: Finished difference. Result has 197 places, 149 transitions, 1482 flow [2024-06-14 12:44:38,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1482, PETRI_PLACES=197, PETRI_TRANSITIONS=149} [2024-06-14 12:44:38,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 12:44:38,753 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 149 transitions, 1482 flow [2024-06-14 12:44:38,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:38,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:38,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:38,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:44:38,753 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:38,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 677526436, now seen corresponding path program 12 times [2024-06-14 12:44:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:38,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313619897] [2024-06-14 12:44:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:38,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:39,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:39,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313619897] [2024-06-14 12:44:39,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313619897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:39,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:39,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:39,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738562127] [2024-06-14 12:44:39,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:39,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:39,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:39,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:39,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:39,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:39,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 149 transitions, 1482 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:39,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:39,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:39,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:39,974 INFO L124 PetriNetUnfolderBase]: 467/918 cut-off events. [2024-06-14 12:44:39,974 INFO L125 PetriNetUnfolderBase]: For 77475/77475 co-relation queries the response was YES. [2024-06-14 12:44:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 918 events. 467/918 cut-off events. For 77475/77475 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4834 event pairs, 106 based on Foata normal form. 8/926 useless extension candidates. Maximal degree in co-relation 6071. Up to 618 conditions per place. [2024-06-14 12:44:39,979 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 96 selfloop transitions, 63 changer transitions 18/179 dead transitions. [2024-06-14 12:44:39,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 179 transitions, 1930 flow [2024-06-14 12:44:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:44:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:44:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:44:39,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-14 12:44:39,979 INFO L175 Difference]: Start difference. First operand has 197 places, 149 transitions, 1482 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:44:39,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 179 transitions, 1930 flow [2024-06-14 12:44:40,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 179 transitions, 1783 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:40,087 INFO L231 Difference]: Finished difference. Result has 198 places, 144 transitions, 1423 flow [2024-06-14 12:44:40,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1423, PETRI_PLACES=198, PETRI_TRANSITIONS=144} [2024-06-14 12:44:40,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-14 12:44:40,087 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 144 transitions, 1423 flow [2024-06-14 12:44:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:40,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:40,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:40,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:44:40,088 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:40,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1886374064, now seen corresponding path program 1 times [2024-06-14 12:44:40,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122570495] [2024-06-14 12:44:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:40,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122570495] [2024-06-14 12:44:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122570495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:41,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030767407] [2024-06-14 12:44:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:41,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:41,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 144 transitions, 1423 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:41,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:41,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:41,574 INFO L124 PetriNetUnfolderBase]: 439/850 cut-off events. [2024-06-14 12:44:41,575 INFO L125 PetriNetUnfolderBase]: For 65439/65439 co-relation queries the response was YES. [2024-06-14 12:44:41,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 850 events. 439/850 cut-off events. For 65439/65439 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4342 event pairs, 100 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5719. Up to 721 conditions per place. [2024-06-14 12:44:41,580 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 29 changer transitions 0/162 dead transitions. [2024-06-14 12:44:41,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 162 transitions, 1791 flow [2024-06-14 12:44:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:44:41,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:44:41,581 INFO L175 Difference]: Start difference. First operand has 198 places, 144 transitions, 1423 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:44:41,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 162 transitions, 1791 flow [2024-06-14 12:44:41,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1591 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-06-14 12:44:41,681 INFO L231 Difference]: Finished difference. Result has 188 places, 145 transitions, 1295 flow [2024-06-14 12:44:41,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1295, PETRI_PLACES=188, PETRI_TRANSITIONS=145} [2024-06-14 12:44:41,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 12:44:41,681 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 145 transitions, 1295 flow [2024-06-14 12:44:41,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:41,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:41,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:44:41,681 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:41,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1033990568, now seen corresponding path program 13 times [2024-06-14 12:44:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928479059] [2024-06-14 12:44:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:42,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928479059] [2024-06-14 12:44:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928479059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:42,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68000437] [2024-06-14 12:44:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:42,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:42,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 145 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:42,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:42,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:42,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:42,917 INFO L124 PetriNetUnfolderBase]: 455/886 cut-off events. [2024-06-14 12:44:42,917 INFO L125 PetriNetUnfolderBase]: For 77100/77100 co-relation queries the response was YES. [2024-06-14 12:44:42,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 886 events. 455/886 cut-off events. For 77100/77100 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4630 event pairs, 100 based on Foata normal form. 10/896 useless extension candidates. Maximal degree in co-relation 5707. Up to 698 conditions per place. [2024-06-14 12:44:42,922 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 30 changer transitions 11/166 dead transitions. [2024-06-14 12:44:42,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 166 transitions, 1703 flow [2024-06-14 12:44:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:44:42,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:44:42,923 INFO L175 Difference]: Start difference. First operand has 188 places, 145 transitions, 1295 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:44:42,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 166 transitions, 1703 flow [2024-06-14 12:44:43,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 166 transitions, 1641 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:43,012 INFO L231 Difference]: Finished difference. Result has 189 places, 142 transitions, 1266 flow [2024-06-14 12:44:43,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1266, PETRI_PLACES=189, PETRI_TRANSITIONS=142} [2024-06-14 12:44:43,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-14 12:44:43,013 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 142 transitions, 1266 flow [2024-06-14 12:44:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:44:43,013 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:43,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1173905686, now seen corresponding path program 14 times [2024-06-14 12:44:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981365410] [2024-06-14 12:44:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981365410] [2024-06-14 12:44:43,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981365410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:43,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:43,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100486706] [2024-06-14 12:44:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:43,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:43,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:43,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 142 transitions, 1266 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:43,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:43,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:43,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:44,348 INFO L124 PetriNetUnfolderBase]: 472/925 cut-off events. [2024-06-14 12:44:44,348 INFO L125 PetriNetUnfolderBase]: For 92625/92625 co-relation queries the response was YES. [2024-06-14 12:44:44,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6496 conditions, 925 events. 472/925 cut-off events. For 92625/92625 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4917 event pairs, 107 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 6417. Up to 676 conditions per place. [2024-06-14 12:44:44,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 32 changer transitions 7/169 dead transitions. [2024-06-14 12:44:44,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 169 transitions, 1824 flow [2024-06-14 12:44:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:44:44,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-14 12:44:44,354 INFO L175 Difference]: Start difference. First operand has 189 places, 142 transitions, 1266 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:44:44,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 169 transitions, 1824 flow [2024-06-14 12:44:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 169 transitions, 1760 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:44,462 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1246 flow [2024-06-14 12:44:44,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1246, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-14 12:44:44,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-14 12:44:44,462 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1246 flow [2024-06-14 12:44:44,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:44,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:44,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:44,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:44:44,462 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:44,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2094764008, now seen corresponding path program 15 times [2024-06-14 12:44:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:44,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314897958] [2024-06-14 12:44:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:44,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314897958] [2024-06-14 12:44:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314897958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:45,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:45,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129110754] [2024-06-14 12:44:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:45,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1246 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:45,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:45,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:45,879 INFO L124 PetriNetUnfolderBase]: 466/915 cut-off events. [2024-06-14 12:44:45,879 INFO L125 PetriNetUnfolderBase]: For 92609/92609 co-relation queries the response was YES. [2024-06-14 12:44:45,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 915 events. 466/915 cut-off events. For 92609/92609 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4861 event pairs, 125 based on Foata normal form. 8/923 useless extension candidates. Maximal degree in co-relation 6373. Up to 759 conditions per place. [2024-06-14 12:44:45,884 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 23 changer transitions 13/159 dead transitions. [2024-06-14 12:44:45,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 159 transitions, 1622 flow [2024-06-14 12:44:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:44:45,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 12:44:45,885 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1246 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:44:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 159 transitions, 1622 flow [2024-06-14 12:44:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 159 transitions, 1556 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:45,989 INFO L231 Difference]: Finished difference. Result has 188 places, 136 transitions, 1189 flow [2024-06-14 12:44:45,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1189, PETRI_PLACES=188, PETRI_TRANSITIONS=136} [2024-06-14 12:44:45,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 12:44:45,989 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 136 transitions, 1189 flow [2024-06-14 12:44:45,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:45,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:45,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:44:45,989 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:45,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1344603466, now seen corresponding path program 16 times [2024-06-14 12:44:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278231348] [2024-06-14 12:44:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:46,715 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 12:44:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278231348] [2024-06-14 12:44:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278231348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:46,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:46,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124514891] [2024-06-14 12:44:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:46,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:46,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:46,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:46,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 136 transitions, 1189 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:46,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:47,188 INFO L124 PetriNetUnfolderBase]: 455/894 cut-off events. [2024-06-14 12:44:47,188 INFO L125 PetriNetUnfolderBase]: For 92540/92540 co-relation queries the response was YES. [2024-06-14 12:44:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 894 events. 455/894 cut-off events. For 92540/92540 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4703 event pairs, 112 based on Foata normal form. 10/904 useless extension candidates. Maximal degree in co-relation 6139. Up to 697 conditions per place. [2024-06-14 12:44:47,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 32 changer transitions 11/158 dead transitions. [2024-06-14 12:44:47,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 158 transitions, 1583 flow [2024-06-14 12:44:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:44:47,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-14 12:44:47,194 INFO L175 Difference]: Start difference. First operand has 188 places, 136 transitions, 1189 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:44:47,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 158 transitions, 1583 flow [2024-06-14 12:44:47,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 158 transitions, 1533 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:47,293 INFO L231 Difference]: Finished difference. Result has 184 places, 133 transitions, 1177 flow [2024-06-14 12:44:47,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1177, PETRI_PLACES=184, PETRI_TRANSITIONS=133} [2024-06-14 12:44:47,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-14 12:44:47,294 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 133 transitions, 1177 flow [2024-06-14 12:44:47,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:47,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:47,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:44:47,294 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1344608116, now seen corresponding path program 17 times [2024-06-14 12:44:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055644565] [2024-06-14 12:44:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:47,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055644565] [2024-06-14 12:44:47,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055644565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:47,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:47,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:47,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291045277] [2024-06-14 12:44:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:47,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:47,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:48,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:48,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 133 transitions, 1177 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:48,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:48,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:48,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:48,518 INFO L124 PetriNetUnfolderBase]: 443/874 cut-off events. [2024-06-14 12:44:48,518 INFO L125 PetriNetUnfolderBase]: For 86103/86103 co-relation queries the response was YES. [2024-06-14 12:44:48,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6085 conditions, 874 events. 443/874 cut-off events. For 86103/86103 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4595 event pairs, 108 based on Foata normal form. 8/882 useless extension candidates. Maximal degree in co-relation 6007. Up to 687 conditions per place. [2024-06-14 12:44:48,523 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 30 changer transitions 11/154 dead transitions. [2024-06-14 12:44:48,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 154 transitions, 1547 flow [2024-06-14 12:44:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:44:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:44:48,524 INFO L175 Difference]: Start difference. First operand has 184 places, 133 transitions, 1177 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:44:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 154 transitions, 1547 flow [2024-06-14 12:44:48,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 154 transitions, 1481 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:48,627 INFO L231 Difference]: Finished difference. Result has 183 places, 130 transitions, 1144 flow [2024-06-14 12:44:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1144, PETRI_PLACES=183, PETRI_TRANSITIONS=130} [2024-06-14 12:44:48,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:44:48,627 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 130 transitions, 1144 flow [2024-06-14 12:44:48,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:48,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:48,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:48,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:44:48,628 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:48,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1344723436, now seen corresponding path program 18 times [2024-06-14 12:44:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:48,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405967573] [2024-06-14 12:44:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:49,307 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 12:44:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405967573] [2024-06-14 12:44:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405967573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100972398] [2024-06-14 12:44:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:49,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:49,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 130 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:49,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:49,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:49,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:49,792 INFO L124 PetriNetUnfolderBase]: 414/815 cut-off events. [2024-06-14 12:44:49,792 INFO L125 PetriNetUnfolderBase]: For 74050/74050 co-relation queries the response was YES. [2024-06-14 12:44:49,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 815 events. 414/815 cut-off events. For 74050/74050 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4165 event pairs, 88 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 5349. Up to 558 conditions per place. [2024-06-14 12:44:49,796 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 27 changer transitions 12/157 dead transitions. [2024-06-14 12:44:49,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 157 transitions, 1676 flow [2024-06-14 12:44:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:44:49,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-14 12:44:49,797 INFO L175 Difference]: Start difference. First operand has 183 places, 130 transitions, 1144 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:44:49,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 157 transitions, 1676 flow [2024-06-14 12:44:49,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 157 transitions, 1602 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:49,897 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 1083 flow [2024-06-14 12:44:49,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1083, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2024-06-14 12:44:49,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 12:44:49,898 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 1083 flow [2024-06-14 12:44:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:49,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:49,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:49,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:44:49,898 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:49,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1173901036, now seen corresponding path program 19 times [2024-06-14 12:44:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:49,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460654608] [2024-06-14 12:44:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:50,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:50,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460654608] [2024-06-14 12:44:50,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460654608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:50,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659000144] [2024-06-14 12:44:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:50,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:50,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:50,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 125 transitions, 1083 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:50,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:50,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:50,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:51,218 INFO L124 PetriNetUnfolderBase]: 377/740 cut-off events. [2024-06-14 12:44:51,218 INFO L125 PetriNetUnfolderBase]: For 59753/59753 co-relation queries the response was YES. [2024-06-14 12:44:51,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 740 events. 377/740 cut-off events. For 59753/59753 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3660 event pairs, 75 based on Foata normal form. 10/750 useless extension candidates. Maximal degree in co-relation 4475. Up to 558 conditions per place. [2024-06-14 12:44:51,221 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 105 selfloop transitions, 25 changer transitions 15/147 dead transitions. [2024-06-14 12:44:51,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 147 transitions, 1455 flow [2024-06-14 12:44:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:44:51,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:44:51,222 INFO L175 Difference]: Start difference. First operand has 179 places, 125 transitions, 1083 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:44:51,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 147 transitions, 1455 flow [2024-06-14 12:44:51,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 147 transitions, 1379 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:51,310 INFO L231 Difference]: Finished difference. Result has 175 places, 120 transitions, 1011 flow [2024-06-14 12:44:51,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1011, PETRI_PLACES=175, PETRI_TRANSITIONS=120} [2024-06-14 12:44:51,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-14 12:44:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 120 transitions, 1011 flow [2024-06-14 12:44:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:51,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:51,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:51,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:44:51,311 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:51,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1721317622, now seen corresponding path program 20 times [2024-06-14 12:44:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411889907] [2024-06-14 12:44:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:52,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:52,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411889907] [2024-06-14 12:44:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411889907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:52,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:52,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327103479] [2024-06-14 12:44:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:52,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:52,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 120 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:52,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:52,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:52,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:52,418 INFO L124 PetriNetUnfolderBase]: 393/780 cut-off events. [2024-06-14 12:44:52,419 INFO L125 PetriNetUnfolderBase]: For 73608/73608 co-relation queries the response was YES. [2024-06-14 12:44:52,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 780 events. 393/780 cut-off events. For 73608/73608 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3924 event pairs, 95 based on Foata normal form. 8/788 useless extension candidates. Maximal degree in co-relation 5164. Up to 276 conditions per place. [2024-06-14 12:44:52,423 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 51 changer transitions 13/144 dead transitions. [2024-06-14 12:44:52,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 144 transitions, 1491 flow [2024-06-14 12:44:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:44:52,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:44:52,424 INFO L175 Difference]: Start difference. First operand has 175 places, 120 transitions, 1011 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:44:52,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 144 transitions, 1491 flow [2024-06-14 12:44:52,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 144 transitions, 1378 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:52,518 INFO L231 Difference]: Finished difference. Result has 164 places, 117 transitions, 988 flow [2024-06-14 12:44:52,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=164, PETRI_TRANSITIONS=117} [2024-06-14 12:44:52,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-14 12:44:52,519 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 117 transitions, 988 flow [2024-06-14 12:44:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:52,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:52,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:44:52,519 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:52,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1779530042, now seen corresponding path program 21 times [2024-06-14 12:44:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095515137] [2024-06-14 12:44:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:53,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095515137] [2024-06-14 12:44:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095515137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:53,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686338925] [2024-06-14 12:44:53,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:53,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:53,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:53,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 117 transitions, 988 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:53,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:53,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:53,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:53,596 INFO L124 PetriNetUnfolderBase]: 385/768 cut-off events. [2024-06-14 12:44:53,596 INFO L125 PetriNetUnfolderBase]: For 76662/76662 co-relation queries the response was YES. [2024-06-14 12:44:53,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 768 events. 385/768 cut-off events. For 76662/76662 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3880 event pairs, 105 based on Foata normal form. 10/778 useless extension candidates. Maximal degree in co-relation 5181. Up to 504 conditions per place. [2024-06-14 12:44:53,601 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 51 changer transitions 12/137 dead transitions. [2024-06-14 12:44:53,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 137 transitions, 1336 flow [2024-06-14 12:44:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:44:53,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:44:53,601 INFO L175 Difference]: Start difference. First operand has 164 places, 117 transitions, 988 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:44:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 137 transitions, 1336 flow [2024-06-14 12:44:53,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 137 transitions, 1257 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:44:53,708 INFO L231 Difference]: Finished difference. Result has 161 places, 114 transitions, 992 flow [2024-06-14 12:44:53,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=992, PETRI_PLACES=161, PETRI_TRANSITIONS=114} [2024-06-14 12:44:53,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-14 12:44:53,709 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 114 transitions, 992 flow [2024-06-14 12:44:53,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:53,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:53,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:53,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:44:53,709 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:53,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1779410072, now seen corresponding path program 22 times [2024-06-14 12:44:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834647925] [2024-06-14 12:44:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:54,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834647925] [2024-06-14 12:44:54,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834647925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:54,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:54,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224649610] [2024-06-14 12:44:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 114 transitions, 992 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:54,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:54,871 INFO L124 PetriNetUnfolderBase]: 407/818 cut-off events. [2024-06-14 12:44:54,871 INFO L125 PetriNetUnfolderBase]: For 79053/79053 co-relation queries the response was YES. [2024-06-14 12:44:54,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 818 events. 407/818 cut-off events. For 79053/79053 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4243 event pairs, 119 based on Foata normal form. 8/826 useless extension candidates. Maximal degree in co-relation 5714. Up to 500 conditions per place. [2024-06-14 12:44:54,876 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 49 changer transitions 11/141 dead transitions. [2024-06-14 12:44:54,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 141 transitions, 1482 flow [2024-06-14 12:44:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:44:54,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-14 12:44:54,877 INFO L175 Difference]: Start difference. First operand has 161 places, 114 transitions, 992 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:44:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 141 transitions, 1482 flow [2024-06-14 12:44:54,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 141 transitions, 1372 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:54,967 INFO L231 Difference]: Finished difference. Result has 161 places, 113 transitions, 981 flow [2024-06-14 12:44:54,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=161, PETRI_TRANSITIONS=113} [2024-06-14 12:44:54,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-14 12:44:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 113 transitions, 981 flow [2024-06-14 12:44:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:54,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:54,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:44:54,967 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:54,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2028278310, now seen corresponding path program 23 times [2024-06-14 12:44:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786446787] [2024-06-14 12:44:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786446787] [2024-06-14 12:44:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786446787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:55,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381928209] [2024-06-14 12:44:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:55,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:55,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 113 transitions, 981 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:55,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:55,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:55,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:56,146 INFO L124 PetriNetUnfolderBase]: 375/754 cut-off events. [2024-06-14 12:44:56,146 INFO L125 PetriNetUnfolderBase]: For 65718/65718 co-relation queries the response was YES. [2024-06-14 12:44:56,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 754 events. 375/754 cut-off events. For 65718/65718 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3807 event pairs, 101 based on Foata normal form. 8/762 useless extension candidates. Maximal degree in co-relation 5046. Up to 500 conditions per place. [2024-06-14 12:44:56,150 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 47 changer transitions 15/133 dead transitions. [2024-06-14 12:44:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 133 transitions, 1311 flow [2024-06-14 12:44:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:44:56,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 12:44:56,151 INFO L175 Difference]: Start difference. First operand has 161 places, 113 transitions, 981 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:44:56,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 133 transitions, 1311 flow [2024-06-14 12:44:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 133 transitions, 1207 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:56,245 INFO L231 Difference]: Finished difference. Result has 161 places, 110 transitions, 952 flow [2024-06-14 12:44:56,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=952, PETRI_PLACES=161, PETRI_TRANSITIONS=110} [2024-06-14 12:44:56,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-14 12:44:56,246 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 110 transitions, 952 flow [2024-06-14 12:44:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:56,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:56,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:56,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:44:56,246 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:56,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 663636450, now seen corresponding path program 24 times [2024-06-14 12:44:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:56,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010173135] [2024-06-14 12:44:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010173135] [2024-06-14 12:44:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010173135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:56,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698596174] [2024-06-14 12:44:56,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:57,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:57,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 110 transitions, 952 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:57,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:57,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:57,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:57,331 INFO L124 PetriNetUnfolderBase]: 400/805 cut-off events. [2024-06-14 12:44:57,332 INFO L125 PetriNetUnfolderBase]: For 78942/78942 co-relation queries the response was YES. [2024-06-14 12:44:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 805 events. 400/805 cut-off events. For 78942/78942 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4161 event pairs, 110 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 5740. Up to 565 conditions per place. [2024-06-14 12:44:57,336 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 31 changer transitions 8/135 dead transitions. [2024-06-14 12:44:57,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 135 transitions, 1432 flow [2024-06-14 12:44:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:44:57,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 12:44:57,337 INFO L175 Difference]: Start difference. First operand has 161 places, 110 transitions, 952 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:44:57,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 135 transitions, 1432 flow [2024-06-14 12:44:57,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 135 transitions, 1322 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:57,414 INFO L231 Difference]: Finished difference. Result has 156 places, 109 transitions, 907 flow [2024-06-14 12:44:57,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=156, PETRI_TRANSITIONS=109} [2024-06-14 12:44:57,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 12:44:57,414 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 109 transitions, 907 flow [2024-06-14 12:44:57,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:57,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:57,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:57,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:44:57,415 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:57,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 663641100, now seen corresponding path program 25 times [2024-06-14 12:44:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17190881] [2024-06-14 12:44:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17190881] [2024-06-14 12:44:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17190881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:58,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:58,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874562064] [2024-06-14 12:44:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:58,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:58,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:58,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 109 transitions, 907 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:58,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:58,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:58,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:58,526 INFO L124 PetriNetUnfolderBase]: 369/744 cut-off events. [2024-06-14 12:44:58,526 INFO L125 PetriNetUnfolderBase]: For 63301/63301 co-relation queries the response was YES. [2024-06-14 12:44:58,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 744 events. 369/744 cut-off events. For 63301/63301 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3763 event pairs, 101 based on Foata normal form. 10/754 useless extension candidates. Maximal degree in co-relation 4873. Up to 565 conditions per place. [2024-06-14 12:44:58,530 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 28 changer transitions 14/128 dead transitions. [2024-06-14 12:44:58,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 128 transitions, 1233 flow [2024-06-14 12:44:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:44:58,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:44:58,531 INFO L175 Difference]: Start difference. First operand has 156 places, 109 transitions, 907 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:44:58,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 128 transitions, 1233 flow [2024-06-14 12:44:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 128 transitions, 1167 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:58,616 INFO L231 Difference]: Finished difference. Result has 156 places, 105 transitions, 864 flow [2024-06-14 12:44:58,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=864, PETRI_PLACES=156, PETRI_TRANSITIONS=105} [2024-06-14 12:44:58,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 12:44:58,617 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 105 transitions, 864 flow [2024-06-14 12:44:58,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:58,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:58,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:58,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:44:58,617 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 659052480, now seen corresponding path program 26 times [2024-06-14 12:44:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757905813] [2024-06-14 12:44:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:59,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757905813] [2024-06-14 12:44:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757905813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:59,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:59,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:44:59,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709588712] [2024-06-14 12:44:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:44:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:44:59,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:44:59,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:44:59,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 105 transitions, 864 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:59,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:59,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:44:59,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:59,784 INFO L124 PetriNetUnfolderBase]: 385/780 cut-off events. [2024-06-14 12:44:59,784 INFO L125 PetriNetUnfolderBase]: For 72852/72852 co-relation queries the response was YES. [2024-06-14 12:44:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 780 events. 385/780 cut-off events. For 72852/72852 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4023 event pairs, 114 based on Foata normal form. 8/788 useless extension candidates. Maximal degree in co-relation 5463. Up to 519 conditions per place. [2024-06-14 12:44:59,788 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 29 changer transitions 11/130 dead transitions. [2024-06-14 12:44:59,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 130 transitions, 1324 flow [2024-06-14 12:44:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:44:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:44:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:44:59,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-14 12:44:59,789 INFO L175 Difference]: Start difference. First operand has 156 places, 105 transitions, 864 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:44:59,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 130 transitions, 1324 flow [2024-06-14 12:44:59,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 130 transitions, 1246 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:59,865 INFO L231 Difference]: Finished difference. Result has 151 places, 102 transitions, 838 flow [2024-06-14 12:44:59,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=838, PETRI_PLACES=151, PETRI_TRANSITIONS=102} [2024-06-14 12:44:59,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 12:44:59,866 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 102 transitions, 838 flow [2024-06-14 12:44:59,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:59,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:59,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:44:59,866 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:44:59,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1951333122, now seen corresponding path program 27 times [2024-06-14 12:44:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342959049] [2024-06-14 12:44:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342959049] [2024-06-14 12:45:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342959049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:00,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447184429] [2024-06-14 12:45:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:00,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:00,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:00,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:00,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:00,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 102 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:00,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:00,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:01,001 INFO L124 PetriNetUnfolderBase]: 375/762 cut-off events. [2024-06-14 12:45:01,002 INFO L125 PetriNetUnfolderBase]: For 67465/67465 co-relation queries the response was YES. [2024-06-14 12:45:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 762 events. 375/762 cut-off events. For 67465/67465 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3915 event pairs, 118 based on Foata normal form. 8/770 useless extension candidates. Maximal degree in co-relation 5239. Up to 541 conditions per place. [2024-06-14 12:45:01,006 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 25 changer transitions 8/125 dead transitions. [2024-06-14 12:45:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 125 transitions, 1274 flow [2024-06-14 12:45:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:45:01,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:45:01,007 INFO L175 Difference]: Start difference. First operand has 151 places, 102 transitions, 838 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:45:01,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 125 transitions, 1274 flow [2024-06-14 12:45:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 125 transitions, 1207 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:01,061 INFO L231 Difference]: Finished difference. Result has 148 places, 100 transitions, 812 flow [2024-06-14 12:45:01,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=812, PETRI_PLACES=148, PETRI_TRANSITIONS=100} [2024-06-14 12:45:01,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-14 12:45:01,061 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 100 transitions, 812 flow [2024-06-14 12:45:01,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:01,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:01,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:45:01,061 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:01,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1951328472, now seen corresponding path program 28 times [2024-06-14 12:45:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741901317] [2024-06-14 12:45:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741901317] [2024-06-14 12:45:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741901317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:01,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714055255] [2024-06-14 12:45:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:01,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:01,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 100 transitions, 812 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:01,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:01,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:02,188 INFO L124 PetriNetUnfolderBase]: 344/701 cut-off events. [2024-06-14 12:45:02,188 INFO L125 PetriNetUnfolderBase]: For 53749/53749 co-relation queries the response was YES. [2024-06-14 12:45:02,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 701 events. 344/701 cut-off events. For 53749/53749 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3506 event pairs, 99 based on Foata normal form. 10/711 useless extension candidates. Maximal degree in co-relation 4467. Up to 519 conditions per place. [2024-06-14 12:45:02,191 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 24 changer transitions 18/119 dead transitions. [2024-06-14 12:45:02,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 119 transitions, 1116 flow [2024-06-14 12:45:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:45:02,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:45:02,192 INFO L175 Difference]: Start difference. First operand has 148 places, 100 transitions, 812 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:45:02,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 119 transitions, 1116 flow [2024-06-14 12:45:02,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1020 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:02,252 INFO L231 Difference]: Finished difference. Result has 147 places, 93 transitions, 716 flow [2024-06-14 12:45:02,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=716, PETRI_PLACES=147, PETRI_TRANSITIONS=93} [2024-06-14 12:45:02,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-14 12:45:02,252 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 93 transitions, 716 flow [2024-06-14 12:45:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:02,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:02,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:02,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:45:02,253 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:02,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -215282846, now seen corresponding path program 29 times [2024-06-14 12:45:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013174920] [2024-06-14 12:45:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:02,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:03,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013174920] [2024-06-14 12:45:03,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013174920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:03,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:03,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968006750] [2024-06-14 12:45:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:03,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:03,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:03,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 93 transitions, 716 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:03,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:03,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:03,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:03,349 INFO L124 PetriNetUnfolderBase]: 304/613 cut-off events. [2024-06-14 12:45:03,349 INFO L125 PetriNetUnfolderBase]: For 51280/51280 co-relation queries the response was YES. [2024-06-14 12:45:03,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 613 events. 304/613 cut-off events. For 51280/51280 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2900 event pairs, 101 based on Foata normal form. 8/621 useless extension candidates. Maximal degree in co-relation 4031. Up to 299 conditions per place. [2024-06-14 12:45:03,352 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 36 changer transitions 10/115 dead transitions. [2024-06-14 12:45:03,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 115 transitions, 1122 flow [2024-06-14 12:45:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:45:03,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 12:45:03,353 INFO L175 Difference]: Start difference. First operand has 147 places, 93 transitions, 716 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:45:03,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 115 transitions, 1122 flow [2024-06-14 12:45:03,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 115 transitions, 1019 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 12:45:03,401 INFO L231 Difference]: Finished difference. Result has 136 places, 90 transitions, 679 flow [2024-06-14 12:45:03,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=679, PETRI_PLACES=136, PETRI_TRANSITIONS=90} [2024-06-14 12:45:03,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-14 12:45:03,401 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 90 transitions, 679 flow [2024-06-14 12:45:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:03,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:03,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:03,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:45:03,401 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:03,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1646680972, now seen corresponding path program 2 times [2024-06-14 12:45:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66403277] [2024-06-14 12:45:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:04,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:04,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66403277] [2024-06-14 12:45:04,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66403277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:04,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:04,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551998384] [2024-06-14 12:45:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:04,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:04,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:04,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 90 transitions, 679 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:04,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:04,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:04,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:04,758 INFO L124 PetriNetUnfolderBase]: 292/585 cut-off events. [2024-06-14 12:45:04,758 INFO L125 PetriNetUnfolderBase]: For 39609/39609 co-relation queries the response was YES. [2024-06-14 12:45:04,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 585 events. 292/585 cut-off events. For 39609/39609 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2707 event pairs, 82 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3833. Up to 451 conditions per place. [2024-06-14 12:45:04,762 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-14 12:45:04,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 111 transitions, 967 flow [2024-06-14 12:45:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:45:04,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 12:45:04,762 INFO L175 Difference]: Start difference. First operand has 136 places, 90 transitions, 679 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:45:04,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 111 transitions, 967 flow [2024-06-14 12:45:04,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 111 transitions, 904 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:04,801 INFO L231 Difference]: Finished difference. Result has 136 places, 96 transitions, 757 flow [2024-06-14 12:45:04,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=757, PETRI_PLACES=136, PETRI_TRANSITIONS=96} [2024-06-14 12:45:04,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-14 12:45:04,802 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 96 transitions, 757 flow [2024-06-14 12:45:04,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:04,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:04,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:04,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:45:04,802 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:04,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:04,803 INFO L85 PathProgramCache]: Analyzing trace with hash -210698876, now seen corresponding path program 30 times [2024-06-14 12:45:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915053303] [2024-06-14 12:45:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915053303] [2024-06-14 12:45:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915053303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295282058] [2024-06-14 12:45:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:05,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:05,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 96 transitions, 757 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:05,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:05,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:05,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:05,908 INFO L124 PetriNetUnfolderBase]: 337/680 cut-off events. [2024-06-14 12:45:05,908 INFO L125 PetriNetUnfolderBase]: For 48745/48745 co-relation queries the response was YES. [2024-06-14 12:45:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 680 events. 337/680 cut-off events. For 48745/48745 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3387 event pairs, 106 based on Foata normal form. 8/688 useless extension candidates. Maximal degree in co-relation 4606. Up to 453 conditions per place. [2024-06-14 12:45:05,913 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 33 changer transitions 7/119 dead transitions. [2024-06-14 12:45:05,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 119 transitions, 1174 flow [2024-06-14 12:45:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:45:05,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:45:05,914 INFO L175 Difference]: Start difference. First operand has 136 places, 96 transitions, 757 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:45:05,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 119 transitions, 1174 flow [2024-06-14 12:45:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 119 transitions, 1126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:05,954 INFO L231 Difference]: Finished difference. Result has 140 places, 95 transitions, 773 flow [2024-06-14 12:45:05,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=773, PETRI_PLACES=140, PETRI_TRANSITIONS=95} [2024-06-14 12:45:05,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-14 12:45:05,954 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 95 transitions, 773 flow [2024-06-14 12:45:05,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:05,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:05,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:45:05,955 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:05,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 641772038, now seen corresponding path program 31 times [2024-06-14 12:45:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507172040] [2024-06-14 12:45:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:06,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507172040] [2024-06-14 12:45:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507172040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:06,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92596141] [2024-06-14 12:45:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:06,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:06,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 95 transitions, 773 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:06,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:06,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:06,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:07,070 INFO L124 PetriNetUnfolderBase]: 360/729 cut-off events. [2024-06-14 12:45:07,070 INFO L125 PetriNetUnfolderBase]: For 57407/57407 co-relation queries the response was YES. [2024-06-14 12:45:07,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5248 conditions, 729 events. 360/729 cut-off events. For 57407/57407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3743 event pairs, 123 based on Foata normal form. 8/737 useless extension candidates. Maximal degree in co-relation 5183. Up to 502 conditions per place. [2024-06-14 12:45:07,074 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 32 changer transitions 7/118 dead transitions. [2024-06-14 12:45:07,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 118 transitions, 1187 flow [2024-06-14 12:45:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:45:07,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:45:07,075 INFO L175 Difference]: Start difference. First operand has 140 places, 95 transitions, 773 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:45:07,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 118 transitions, 1187 flow [2024-06-14 12:45:07,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 118 transitions, 1115 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:07,114 INFO L231 Difference]: Finished difference. Result has 141 places, 93 transitions, 756 flow [2024-06-14 12:45:07,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=756, PETRI_PLACES=141, PETRI_TRANSITIONS=93} [2024-06-14 12:45:07,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 12:45:07,114 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 93 transitions, 756 flow [2024-06-14 12:45:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:07,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:07,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:45:07,115 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:07,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -531624040, now seen corresponding path program 32 times [2024-06-14 12:45:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163805364] [2024-06-14 12:45:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163805364] [2024-06-14 12:45:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163805364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:07,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:07,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59534471] [2024-06-14 12:45:07,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:07,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:08,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:08,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 93 transitions, 756 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:08,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:08,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:08,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:08,336 INFO L124 PetriNetUnfolderBase]: 329/668 cut-off events. [2024-06-14 12:45:08,337 INFO L125 PetriNetUnfolderBase]: For 51022/51022 co-relation queries the response was YES. [2024-06-14 12:45:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 668 events. 329/668 cut-off events. For 51022/51022 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3309 event pairs, 112 based on Foata normal form. 10/678 useless extension candidates. Maximal degree in co-relation 4567. Up to 502 conditions per place. [2024-06-14 12:45:08,341 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 28 changer transitions 15/111 dead transitions. [2024-06-14 12:45:08,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 111 transitions, 1046 flow [2024-06-14 12:45:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:45:08,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-14 12:45:08,341 INFO L175 Difference]: Start difference. First operand has 141 places, 93 transitions, 756 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:45:08,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 111 transitions, 1046 flow [2024-06-14 12:45:08,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 111 transitions, 980 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:08,381 INFO L231 Difference]: Finished difference. Result has 140 places, 88 transitions, 709 flow [2024-06-14 12:45:08,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=709, PETRI_PLACES=140, PETRI_TRANSITIONS=88} [2024-06-14 12:45:08,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-14 12:45:08,382 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 88 transitions, 709 flow [2024-06-14 12:45:08,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:08,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:08,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:45:08,383 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:08,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1473772148, now seen corresponding path program 33 times [2024-06-14 12:45:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:08,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524284690] [2024-06-14 12:45:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:08,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:09,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:09,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524284690] [2024-06-14 12:45:09,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524284690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:09,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:09,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:09,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901230474] [2024-06-14 12:45:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:09,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:09,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:09,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 88 transitions, 709 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:09,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:09,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:09,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:09,464 INFO L124 PetriNetUnfolderBase]: 290/591 cut-off events. [2024-06-14 12:45:09,464 INFO L125 PetriNetUnfolderBase]: For 40729/40729 co-relation queries the response was YES. [2024-06-14 12:45:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 591 events. 290/591 cut-off events. For 40729/40729 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2798 event pairs, 95 based on Foata normal form. 10/601 useless extension candidates. Maximal degree in co-relation 3819. Up to 428 conditions per place. [2024-06-14 12:45:09,467 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 27 changer transitions 15/105 dead transitions. [2024-06-14 12:45:09,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 105 transitions, 985 flow [2024-06-14 12:45:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:45:09,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 12:45:09,468 INFO L175 Difference]: Start difference. First operand has 140 places, 88 transitions, 709 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:45:09,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 105 transitions, 985 flow [2024-06-14 12:45:09,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 105 transitions, 921 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:09,499 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 663 flow [2024-06-14 12:45:09,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=663, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-14 12:45:09,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-14 12:45:09,500 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 663 flow [2024-06-14 12:45:09,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:09,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:09,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:09,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:45:09,500 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:09,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash -702331120, now seen corresponding path program 34 times [2024-06-14 12:45:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:09,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962298445] [2024-06-14 12:45:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962298445] [2024-06-14 12:45:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962298445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:10,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:10,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110724544] [2024-06-14 12:45:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:10,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:10,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:10,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 663 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:10,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:10,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:10,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:10,540 INFO L124 PetriNetUnfolderBase]: 305/624 cut-off events. [2024-06-14 12:45:10,540 INFO L125 PetriNetUnfolderBase]: For 40069/40069 co-relation queries the response was YES. [2024-06-14 12:45:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 624 events. 305/624 cut-off events. For 40069/40069 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3045 event pairs, 98 based on Foata normal form. 8/632 useless extension candidates. Maximal degree in co-relation 4143. Up to 372 conditions per place. [2024-06-14 12:45:10,543 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 38 changer transitions 7/106 dead transitions. [2024-06-14 12:45:10,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 106 transitions, 1047 flow [2024-06-14 12:45:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:45:10,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:45:10,544 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 663 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:45:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 106 transitions, 1047 flow [2024-06-14 12:45:10,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 106 transitions, 967 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:10,570 INFO L231 Difference]: Finished difference. Result has 125 places, 81 transitions, 662 flow [2024-06-14 12:45:10,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=662, PETRI_PLACES=125, PETRI_TRANSITIONS=81} [2024-06-14 12:45:10,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:45:10,571 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 81 transitions, 662 flow [2024-06-14 12:45:10,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:10,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:10,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:10,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:45:10,571 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:10,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash -702326470, now seen corresponding path program 35 times [2024-06-14 12:45:10,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:10,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952040108] [2024-06-14 12:45:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:10,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952040108] [2024-06-14 12:45:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952040108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:11,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:45:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704614492] [2024-06-14 12:45:11,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:11,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:45:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:45:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:45:11,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:11,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 81 transitions, 662 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:11,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:11,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:11,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:11,706 INFO L124 PetriNetUnfolderBase]: 274/563 cut-off events. [2024-06-14 12:45:11,706 INFO L125 PetriNetUnfolderBase]: For 29617/29617 co-relation queries the response was YES. [2024-06-14 12:45:11,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 563 events. 274/563 cut-off events. For 29617/29617 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2641 event pairs, 89 based on Foata normal form. 10/573 useless extension candidates. Maximal degree in co-relation 3425. Up to 372 conditions per place. [2024-06-14 12:45:11,709 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 32 changer transitions 16/99 dead transitions. [2024-06-14 12:45:11,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 99 transitions, 926 flow [2024-06-14 12:45:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:45:11,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:45:11,710 INFO L175 Difference]: Start difference. First operand has 125 places, 81 transitions, 662 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:45:11,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 99 transitions, 926 flow [2024-06-14 12:45:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 99 transitions, 848 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:11,733 INFO L231 Difference]: Finished difference. Result has 124 places, 74 transitions, 599 flow [2024-06-14 12:45:11,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=124, PETRI_TRANSITIONS=74} [2024-06-14 12:45:11,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 12:45:11,734 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 74 transitions, 599 flow [2024-06-14 12:45:11,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:11,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:11,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:11,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:45:11,734 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:11,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash -843682760, now seen corresponding path program 3 times [2024-06-14 12:45:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757911684] [2024-06-14 12:45:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:11,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757911684] [2024-06-14 12:45:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757911684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:12,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676966726] [2024-06-14 12:45:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:12,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:12,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 74 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:12,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:12,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:13,020 INFO L124 PetriNetUnfolderBase]: 249/512 cut-off events. [2024-06-14 12:45:13,020 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2024-06-14 12:45:13,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 512 events. 249/512 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2320 event pairs, 99 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3177. Up to 470 conditions per place. [2024-06-14 12:45:13,022 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-14 12:45:13,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 87 transitions, 807 flow [2024-06-14 12:45:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:45:13,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:45:13,025 INFO L175 Difference]: Start difference. First operand has 124 places, 74 transitions, 599 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:45:13,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 87 transitions, 807 flow [2024-06-14 12:45:13,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 87 transitions, 731 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:13,046 INFO L231 Difference]: Finished difference. Result has 115 places, 75 transitions, 567 flow [2024-06-14 12:45:13,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=567, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2024-06-14 12:45:13,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-14 12:45:13,046 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 567 flow [2024-06-14 12:45:13,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:13,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:13,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:13,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:45:13,047 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:13,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1898372440, now seen corresponding path program 36 times [2024-06-14 12:45:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:13,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691298231] [2024-06-14 12:45:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691298231] [2024-06-14 12:45:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691298231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:13,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:13,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000166517] [2024-06-14 12:45:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:13,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:13,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 567 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:13,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:13,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:13,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:14,209 INFO L124 PetriNetUnfolderBase]: 290/599 cut-off events. [2024-06-14 12:45:14,209 INFO L125 PetriNetUnfolderBase]: For 24872/24872 co-relation queries the response was YES. [2024-06-14 12:45:14,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 599 events. 290/599 cut-off events. For 24872/24872 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2936 event pairs, 114 based on Foata normal form. 8/607 useless extension candidates. Maximal degree in co-relation 3513. Up to 432 conditions per place. [2024-06-14 12:45:14,211 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 21 changer transitions 7/98 dead transitions. [2024-06-14 12:45:14,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 98 transitions, 909 flow [2024-06-14 12:45:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:45:14,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:45:14,212 INFO L175 Difference]: Start difference. First operand has 115 places, 75 transitions, 567 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:45:14,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 98 transitions, 909 flow [2024-06-14 12:45:14,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 98 transitions, 875 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:14,229 INFO L231 Difference]: Finished difference. Result has 118 places, 73 transitions, 564 flow [2024-06-14 12:45:14,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=118, PETRI_TRANSITIONS=73} [2024-06-14 12:45:14,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:45:14,229 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 73 transitions, 564 flow [2024-06-14 12:45:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:14,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:14,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:14,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:45:14,229 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:14,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1372819724, now seen corresponding path program 37 times [2024-06-14 12:45:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873156624] [2024-06-14 12:45:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:14,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873156624] [2024-06-14 12:45:14,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873156624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:14,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:14,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562070517] [2024-06-14 12:45:14,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:15,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:15,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 73 transitions, 564 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:15,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:15,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:15,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:15,338 INFO L124 PetriNetUnfolderBase]: 259/538 cut-off events. [2024-06-14 12:45:15,338 INFO L125 PetriNetUnfolderBase]: For 23172/23172 co-relation queries the response was YES. [2024-06-14 12:45:15,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 538 events. 259/538 cut-off events. For 23172/23172 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2525 event pairs, 111 based on Foata normal form. 10/548 useless extension candidates. Maximal degree in co-relation 3077. Up to 432 conditions per place. [2024-06-14 12:45:15,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 17 changer transitions 15/91 dead transitions. [2024-06-14 12:45:15,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 91 transitions, 808 flow [2024-06-14 12:45:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:45:15,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:45:15,341 INFO L175 Difference]: Start difference. First operand has 118 places, 73 transitions, 564 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:45:15,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 91 transitions, 808 flow [2024-06-14 12:45:15,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 91 transitions, 764 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:15,359 INFO L231 Difference]: Finished difference. Result has 117 places, 68 transitions, 517 flow [2024-06-14 12:45:15,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=517, PETRI_PLACES=117, PETRI_TRANSITIONS=68} [2024-06-14 12:45:15,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-14 12:45:15,359 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 68 transitions, 517 flow [2024-06-14 12:45:15,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:15,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:15,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:15,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:45:15,359 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:15,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1379494768, now seen corresponding path program 4 times [2024-06-14 12:45:15,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:15,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503691881] [2024-06-14 12:45:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:15,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:16,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:16,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503691881] [2024-06-14 12:45:16,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503691881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:16,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:16,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:16,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89630134] [2024-06-14 12:45:16,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:16,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:16,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:16,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:16,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 68 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:16,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:16,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:16,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:16,702 INFO L124 PetriNetUnfolderBase]: 230/479 cut-off events. [2024-06-14 12:45:16,702 INFO L125 PetriNetUnfolderBase]: For 17541/17541 co-relation queries the response was YES. [2024-06-14 12:45:16,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 479 events. 230/479 cut-off events. For 17541/17541 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2140 event pairs, 104 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2747. Up to 419 conditions per place. [2024-06-14 12:45:16,704 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2024-06-14 12:45:16,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 83 transitions, 730 flow [2024-06-14 12:45:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:45:16,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:45:16,705 INFO L175 Difference]: Start difference. First operand has 117 places, 68 transitions, 517 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:45:16,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 83 transitions, 730 flow [2024-06-14 12:45:16,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 83 transitions, 682 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:16,720 INFO L231 Difference]: Finished difference. Result has 110 places, 70 transitions, 540 flow [2024-06-14 12:45:16,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=110, PETRI_TRANSITIONS=70} [2024-06-14 12:45:16,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:45:16,721 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 70 transitions, 540 flow [2024-06-14 12:45:16,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:16,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:16,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:16,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:45:16,721 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:16,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:16,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1204993158, now seen corresponding path program 38 times [2024-06-14 12:45:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48481522] [2024-06-14 12:45:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48481522] [2024-06-14 12:45:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48481522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:17,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:17,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:17,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929807360] [2024-06-14 12:45:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:17,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:17,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 70 transitions, 540 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:17,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:17,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:17,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:17,875 INFO L124 PetriNetUnfolderBase]: 239/502 cut-off events. [2024-06-14 12:45:17,875 INFO L125 PetriNetUnfolderBase]: For 16348/16348 co-relation queries the response was YES. [2024-06-14 12:45:17,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 502 events. 239/502 cut-off events. For 16348/16348 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2304 event pairs, 105 based on Foata normal form. 10/512 useless extension candidates. Maximal degree in co-relation 2631. Up to 387 conditions per place. [2024-06-14 12:45:17,877 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 25 changer transitions 11/89 dead transitions. [2024-06-14 12:45:17,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 89 transitions, 780 flow [2024-06-14 12:45:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:45:17,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-14 12:45:17,878 INFO L175 Difference]: Start difference. First operand has 110 places, 70 transitions, 540 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:45:17,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 89 transitions, 780 flow [2024-06-14 12:45:17,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 89 transitions, 742 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:45:17,892 INFO L231 Difference]: Finished difference. Result has 114 places, 67 transitions, 533 flow [2024-06-14 12:45:17,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=114, PETRI_TRANSITIONS=67} [2024-06-14 12:45:17,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-14 12:45:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 67 transitions, 533 flow [2024-06-14 12:45:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:17,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:17,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:45:17,893 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1204997808, now seen corresponding path program 39 times [2024-06-14 12:45:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579288681] [2024-06-14 12:45:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579288681] [2024-06-14 12:45:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579288681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:18,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:18,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267409632] [2024-06-14 12:45:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:18,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:18,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 67 transitions, 533 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:18,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:18,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:18,979 INFO L124 PetriNetUnfolderBase]: 205/436 cut-off events. [2024-06-14 12:45:18,979 INFO L125 PetriNetUnfolderBase]: For 13867/13867 co-relation queries the response was YES. [2024-06-14 12:45:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 436 events. 205/436 cut-off events. For 13867/13867 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1906 event pairs, 79 based on Foata normal form. 8/444 useless extension candidates. Maximal degree in co-relation 2241. Up to 266 conditions per place. [2024-06-14 12:45:18,980 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 22 changer transitions 9/89 dead transitions. [2024-06-14 12:45:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 89 transitions, 833 flow [2024-06-14 12:45:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:45:18,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 12:45:18,981 INFO L175 Difference]: Start difference. First operand has 114 places, 67 transitions, 533 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:45:18,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 89 transitions, 833 flow [2024-06-14 12:45:18,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 775 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:18,992 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 494 flow [2024-06-14 12:45:18,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=494, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-14 12:45:18,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 12:45:18,993 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 494 flow [2024-06-14 12:45:18,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:18,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:18,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:18,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:45:18,993 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:18,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -444077418, now seen corresponding path program 5 times [2024-06-14 12:45:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:18,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964399983] [2024-06-14 12:45:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964399983] [2024-06-14 12:45:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964399983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977421024] [2024-06-14 12:45:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:20,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:20,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:20,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:20,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:20,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:20,346 INFO L124 PetriNetUnfolderBase]: 189/400 cut-off events. [2024-06-14 12:45:20,346 INFO L125 PetriNetUnfolderBase]: For 11091/11091 co-relation queries the response was YES. [2024-06-14 12:45:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 400 events. 189/400 cut-off events. For 11091/11091 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1701 event pairs, 83 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 2099. Up to 350 conditions per place. [2024-06-14 12:45:20,348 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2024-06-14 12:45:20,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 76 transitions, 686 flow [2024-06-14 12:45:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:45:20,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:45:20,349 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 494 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:45:20,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 76 transitions, 686 flow [2024-06-14 12:45:20,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 76 transitions, 634 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:20,358 INFO L231 Difference]: Finished difference. Result has 106 places, 64 transitions, 505 flow [2024-06-14 12:45:20,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=505, PETRI_PLACES=106, PETRI_TRANSITIONS=64} [2024-06-14 12:45:20,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-14 12:45:20,358 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 64 transitions, 505 flow [2024-06-14 12:45:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:20,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:20,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:45:20,359 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:20,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash -976673074, now seen corresponding path program 6 times [2024-06-14 12:45:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64448485] [2024-06-14 12:45:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:21,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64448485] [2024-06-14 12:45:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64448485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:21,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:21,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:21,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105737050] [2024-06-14 12:45:21,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:21,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:21,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:21,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 64 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:21,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:21,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:21,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:21,648 INFO L124 PetriNetUnfolderBase]: 193/408 cut-off events. [2024-06-14 12:45:21,648 INFO L125 PetriNetUnfolderBase]: For 9504/9504 co-relation queries the response was YES. [2024-06-14 12:45:21,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 408 events. 193/408 cut-off events. For 9504/9504 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1747 event pairs, 85 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2083. Up to 342 conditions per place. [2024-06-14 12:45:21,650 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-14 12:45:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 697 flow [2024-06-14 12:45:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:45:21,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:45:21,651 INFO L175 Difference]: Start difference. First operand has 106 places, 64 transitions, 505 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:45:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 697 flow [2024-06-14 12:45:21,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 77 transitions, 640 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:21,660 INFO L231 Difference]: Finished difference. Result has 107 places, 65 transitions, 510 flow [2024-06-14 12:45:21,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=510, PETRI_PLACES=107, PETRI_TRANSITIONS=65} [2024-06-14 12:45:21,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-14 12:45:21,661 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 65 transitions, 510 flow [2024-06-14 12:45:21,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:21,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:21,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:21,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:45:21,661 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:21,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1734282868, now seen corresponding path program 40 times [2024-06-14 12:45:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168943666] [2024-06-14 12:45:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:22,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168943666] [2024-06-14 12:45:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168943666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284173800] [2024-06-14 12:45:22,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:22,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:22,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 65 transitions, 510 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:22,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:22,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:22,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:22,761 INFO L124 PetriNetUnfolderBase]: 180/385 cut-off events. [2024-06-14 12:45:22,761 INFO L125 PetriNetUnfolderBase]: For 9712/9712 co-relation queries the response was YES. [2024-06-14 12:45:22,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 385 events. 180/385 cut-off events. For 9712/9712 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1618 event pairs, 72 based on Foata normal form. 10/395 useless extension candidates. Maximal degree in co-relation 1781. Up to 291 conditions per place. [2024-06-14 12:45:22,763 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 18 changer transitions 12/82 dead transitions. [2024-06-14 12:45:22,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 718 flow [2024-06-14 12:45:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 12:45:22,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:45:22,763 INFO L175 Difference]: Start difference. First operand has 107 places, 65 transitions, 510 flow. Second operand 11 states and 121 transitions. [2024-06-14 12:45:22,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 718 flow [2024-06-14 12:45:22,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 82 transitions, 664 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:45:22,773 INFO L231 Difference]: Finished difference. Result has 110 places, 60 transitions, 454 flow [2024-06-14 12:45:22,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=454, PETRI_PLACES=110, PETRI_TRANSITIONS=60} [2024-06-14 12:45:22,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:45:22,773 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 60 transitions, 454 flow [2024-06-14 12:45:22,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:22,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:22,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:45:22,773 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:22,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2029748022, now seen corresponding path program 7 times [2024-06-14 12:45:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303737605] [2024-06-14 12:45:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303737605] [2024-06-14 12:45:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303737605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:23,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103061148] [2024-06-14 12:45:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:23,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:23,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 60 transitions, 454 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:23,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:23,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:23,893 INFO L124 PetriNetUnfolderBase]: 149/328 cut-off events. [2024-06-14 12:45:23,893 INFO L125 PetriNetUnfolderBase]: For 6805/6805 co-relation queries the response was YES. [2024-06-14 12:45:23,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 328 events. 149/328 cut-off events. For 6805/6805 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1307 event pairs, 56 based on Foata normal form. 2/330 useless extension candidates. Maximal degree in co-relation 1513. Up to 284 conditions per place. [2024-06-14 12:45:23,894 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-14 12:45:23,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 72 transitions, 620 flow [2024-06-14 12:45:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:45:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:45:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:45:23,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:45:23,895 INFO L175 Difference]: Start difference. First operand has 110 places, 60 transitions, 454 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:45:23,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 72 transitions, 620 flow [2024-06-14 12:45:23,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 72 transitions, 566 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:23,903 INFO L231 Difference]: Finished difference. Result has 104 places, 60 transitions, 434 flow [2024-06-14 12:45:23,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=104, PETRI_TRANSITIONS=60} [2024-06-14 12:45:23,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-14 12:45:23,904 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 60 transitions, 434 flow [2024-06-14 12:45:23,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:23,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:23,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:45:23,904 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:23,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -348648977, now seen corresponding path program 1 times [2024-06-14 12:45:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89196351] [2024-06-14 12:45:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:24,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:24,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89196351] [2024-06-14 12:45:24,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89196351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:24,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:24,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546550089] [2024-06-14 12:45:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:25,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:25,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 60 transitions, 434 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:25,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:25,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:25,267 INFO L124 PetriNetUnfolderBase]: 142/315 cut-off events. [2024-06-14 12:45:25,267 INFO L125 PetriNetUnfolderBase]: For 5945/5945 co-relation queries the response was YES. [2024-06-14 12:45:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 315 events. 142/315 cut-off events. For 5945/5945 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 42 based on Foata normal form. 6/321 useless extension candidates. Maximal degree in co-relation 1279. Up to 205 conditions per place. [2024-06-14 12:45:25,268 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 45 selfloop transitions, 9 changer transitions 21/77 dead transitions. [2024-06-14 12:45:25,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 77 transitions, 628 flow [2024-06-14 12:45:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:45:25,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:45:25,269 INFO L175 Difference]: Start difference. First operand has 104 places, 60 transitions, 434 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:45:25,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 77 transitions, 628 flow [2024-06-14 12:45:25,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 77 transitions, 573 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:25,275 INFO L231 Difference]: Finished difference. Result has 106 places, 52 transitions, 347 flow [2024-06-14 12:45:25,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=106, PETRI_TRANSITIONS=52} [2024-06-14 12:45:25,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-14 12:45:25,276 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 52 transitions, 347 flow [2024-06-14 12:45:25,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:25,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:25,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:25,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:45:25,276 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:25,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash 906451137, now seen corresponding path program 2 times [2024-06-14 12:45:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012769382] [2024-06-14 12:45:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:26,584 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 12:45:26,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012769382] [2024-06-14 12:45:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012769382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:26,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126404941] [2024-06-14 12:45:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:26,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:26,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:26,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 52 transitions, 347 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:26,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:26,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:26,937 INFO L124 PetriNetUnfolderBase]: 127/278 cut-off events. [2024-06-14 12:45:26,938 INFO L125 PetriNetUnfolderBase]: For 6288/6288 co-relation queries the response was YES. [2024-06-14 12:45:26,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 278 events. 127/278 cut-off events. For 6288/6288 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 41 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 1101. Up to 170 conditions per place. [2024-06-14 12:45:26,939 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 35 selfloop transitions, 10 changer transitions 20/67 dead transitions. [2024-06-14 12:45:26,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 67 transitions, 513 flow [2024-06-14 12:45:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:45:26,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:45:26,939 INFO L175 Difference]: Start difference. First operand has 106 places, 52 transitions, 347 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:45:26,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 67 transitions, 513 flow [2024-06-14 12:45:26,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 67 transitions, 473 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:26,945 INFO L231 Difference]: Finished difference. Result has 93 places, 45 transitions, 292 flow [2024-06-14 12:45:26,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=292, PETRI_PLACES=93, PETRI_TRANSITIONS=45} [2024-06-14 12:45:26,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-14 12:45:26,946 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 45 transitions, 292 flow [2024-06-14 12:45:26,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:26,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:26,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:26,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:45:26,946 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:26,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 555774371, now seen corresponding path program 3 times [2024-06-14 12:45:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:26,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296427981] [2024-06-14 12:45:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:28,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296427981] [2024-06-14 12:45:28,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296427981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:28,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:28,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:28,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768363052] [2024-06-14 12:45:28,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:28,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:28,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:28,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:28,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 45 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:28,432 INFO L124 PetriNetUnfolderBase]: 111/243 cut-off events. [2024-06-14 12:45:28,432 INFO L125 PetriNetUnfolderBase]: For 5768/5768 co-relation queries the response was YES. [2024-06-14 12:45:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 243 events. 111/243 cut-off events. For 5768/5768 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 878 event pairs, 36 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 965. Up to 169 conditions per place. [2024-06-14 12:45:28,433 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 6 changer transitions 17/60 dead transitions. [2024-06-14 12:45:28,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 60 transitions, 444 flow [2024-06-14 12:45:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:45:28,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:45:28,433 INFO L175 Difference]: Start difference. First operand has 93 places, 45 transitions, 292 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:45:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 60 transitions, 444 flow [2024-06-14 12:45:28,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 60 transitions, 406 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:45:28,446 INFO L231 Difference]: Finished difference. Result has 80 places, 39 transitions, 232 flow [2024-06-14 12:45:28,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=39} [2024-06-14 12:45:28,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:45:28,446 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 39 transitions, 232 flow [2024-06-14 12:45:28,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:28,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:28,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:45:28,446 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:28,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 46194577, now seen corresponding path program 4 times [2024-06-14 12:45:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547465007] [2024-06-14 12:45:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547465007] [2024-06-14 12:45:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547465007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:45:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876626726] [2024-06-14 12:45:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:45:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:45:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:45:29,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:29,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 39 transitions, 232 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:29,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:29,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:29,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:29,666 INFO L124 PetriNetUnfolderBase]: 97/213 cut-off events. [2024-06-14 12:45:29,666 INFO L125 PetriNetUnfolderBase]: For 3676/3676 co-relation queries the response was YES. [2024-06-14 12:45:29,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 213 events. 97/213 cut-off events. For 3676/3676 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 723 event pairs, 32 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 804. Up to 146 conditions per place. [2024-06-14 12:45:29,666 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 8 changer transitions 14/53 dead transitions. [2024-06-14 12:45:29,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 53 transitions, 364 flow [2024-06-14 12:45:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 12:45:29,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-14 12:45:29,667 INFO L175 Difference]: Start difference. First operand has 80 places, 39 transitions, 232 flow. Second operand 11 states and 108 transitions. [2024-06-14 12:45:29,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 53 transitions, 364 flow [2024-06-14 12:45:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 53 transitions, 342 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:29,670 INFO L231 Difference]: Finished difference. Result has 71 places, 35 transitions, 210 flow [2024-06-14 12:45:29,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=71, PETRI_TRANSITIONS=35} [2024-06-14 12:45:29,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-14 12:45:29,670 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 35 transitions, 210 flow [2024-06-14 12:45:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:29,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:29,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:45:29,670 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:29,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1278293283, now seen corresponding path program 5 times [2024-06-14 12:45:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652579456] [2024-06-14 12:45:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652579456] [2024-06-14 12:45:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652579456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:30,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508406992] [2024-06-14 12:45:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:30,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 35 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:30,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:30,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:30,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:31,107 INFO L124 PetriNetUnfolderBase]: 68/154 cut-off events. [2024-06-14 12:45:31,108 INFO L125 PetriNetUnfolderBase]: For 1618/1618 co-relation queries the response was YES. [2024-06-14 12:45:31,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 154 events. 68/154 cut-off events. For 1618/1618 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 17 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 524. Up to 92 conditions per place. [2024-06-14 12:45:31,108 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 5 changer transitions 16/49 dead transitions. [2024-06-14 12:45:31,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 49 transitions, 336 flow [2024-06-14 12:45:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:45:31,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:45:31,109 INFO L175 Difference]: Start difference. First operand has 71 places, 35 transitions, 210 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:45:31,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 49 transitions, 336 flow [2024-06-14 12:45:31,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 49 transitions, 312 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:45:31,110 INFO L231 Difference]: Finished difference. Result has 65 places, 30 transitions, 166 flow [2024-06-14 12:45:31,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=166, PETRI_PLACES=65, PETRI_TRANSITIONS=30} [2024-06-14 12:45:31,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:45:31,111 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 30 transitions, 166 flow [2024-06-14 12:45:31,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:31,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:31,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:45:31,111 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:31,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1815089337, now seen corresponding path program 6 times [2024-06-14 12:45:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826949486] [2024-06-14 12:45:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826949486] [2024-06-14 12:45:32,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826949486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:32,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:32,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326884192] [2024-06-14 12:45:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:32,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:32,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 30 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:32,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:32,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:32,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:32,605 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-14 12:45:32,605 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2024-06-14 12:45:32,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 127 events. 55/127 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 315 event pairs, 15 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 416. Up to 54 conditions per place. [2024-06-14 12:45:32,605 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 19 selfloop transitions, 9 changer transitions 13/43 dead transitions. [2024-06-14 12:45:32,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 43 transitions, 278 flow [2024-06-14 12:45:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 12:45:32,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-14 12:45:32,606 INFO L175 Difference]: Start difference. First operand has 65 places, 30 transitions, 166 flow. Second operand 11 states and 104 transitions. [2024-06-14 12:45:32,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 43 transitions, 278 flow [2024-06-14 12:45:32,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 260 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:45:32,607 INFO L231 Difference]: Finished difference. Result has 57 places, 25 transitions, 137 flow [2024-06-14 12:45:32,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=25} [2024-06-14 12:45:32,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-14 12:45:32,608 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 25 transitions, 137 flow [2024-06-14 12:45:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:32,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:32,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:45:32,608 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:32,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2064180537, now seen corresponding path program 7 times [2024-06-14 12:45:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981466135] [2024-06-14 12:45:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:33,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:33,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981466135] [2024-06-14 12:45:33,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981466135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:33,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:33,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796062355] [2024-06-14 12:45:33,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:33,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:33,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:45:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 25 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:45:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:34,201 INFO L124 PetriNetUnfolderBase]: 27/71 cut-off events. [2024-06-14 12:45:34,202 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-06-14 12:45:34,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 71 events. 27/71 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 210. Up to 24 conditions per place. [2024-06-14 12:45:34,202 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-14 12:45:34,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 33 transitions, 195 flow [2024-06-14 12:45:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-14 12:45:34,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-14 12:45:34,203 INFO L175 Difference]: Start difference. First operand has 57 places, 25 transitions, 137 flow. Second operand 11 states and 96 transitions. [2024-06-14 12:45:34,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 33 transitions, 195 flow [2024-06-14 12:45:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-14 12:45:34,203 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-14 12:45:34,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-14 12:45:34,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 12:45:34,203 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-14 12:45:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:34,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:45:34,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:45:34,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:45:34,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:45:34,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:45:34,218 INFO L445 BasicCegarLoop]: Path program histogram: [40, 18, 14, 8, 7, 7, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:34,221 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:45:34,221 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:45:34,224 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:45:34,224 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:45:34,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:45:34 BasicIcfg [2024-06-14 12:45:34,225 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:45:34,225 INFO L158 Benchmark]: Toolchain (without parser) took 143019.66ms. Allocated memory was 169.9MB in the beginning and 950.0MB in the end (delta: 780.1MB). Free memory was 92.3MB in the beginning and 753.7MB in the end (delta: -661.3MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,225 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:45:34,225 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:45:34,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.45ms. Allocated memory is still 169.9MB. Free memory was 92.1MB in the beginning and 59.5MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.94ms. Allocated memory is still 169.9MB. Free memory was 59.2MB in the beginning and 56.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,225 INFO L158 Benchmark]: Boogie Preprocessor took 59.81ms. Allocated memory is still 169.9MB. Free memory was 56.7MB in the beginning and 137.2MB in the end (delta: -80.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,226 INFO L158 Benchmark]: RCFGBuilder took 549.71ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 86.8MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,226 INFO L158 Benchmark]: TraceAbstraction took 141807.36ms. Allocated memory was 169.9MB in the beginning and 950.0MB in the end (delta: 780.1MB). Free memory was 86.4MB in the beginning and 753.7MB in the end (delta: -667.3MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2024-06-14 12:45:34,226 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.45ms. Allocated memory is still 169.9MB. Free memory was 92.1MB in the beginning and 59.5MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.94ms. Allocated memory is still 169.9MB. Free memory was 59.2MB in the beginning and 56.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.81ms. Allocated memory is still 169.9MB. Free memory was 56.7MB in the beginning and 137.2MB in the end (delta: -80.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * RCFGBuilder took 549.71ms. Allocated memory is still 169.9MB. Free memory was 137.2MB in the beginning and 86.8MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 141807.36ms. Allocated memory was 169.9MB in the beginning and 950.0MB in the end (delta: 780.1MB). Free memory was 86.4MB in the beginning and 753.7MB in the end (delta: -667.3MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 141.7s, OverallIterations: 121, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 53.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7672 SdHoareTripleChecker+Valid, 27.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6600 mSDsluCounter, 4370 SdHoareTripleChecker+Invalid, 23.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3840 mSDsCounter, 1953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46479 IncrementalHoareTripleChecker+Invalid, 48432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1953 mSolverCounterUnsat, 530 mSDtfsCounter, 46479 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1334 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 32.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2560occurred in iteration=57, InterpolantAutomatonStates: 1170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 86.7s InterpolantComputationTime, 2022 NumberOfCodeBlocks, 2022 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 1901 ConstructedInterpolants, 0 QuantifiedInterpolants, 78069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 121 InterpolantComputations, 121 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:45:34,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE