./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:29:49,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:29:49,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:29:49,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:29:49,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:29:49,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:29:49,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:29:49,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:29:49,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:29:49,795 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:29:49,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:29:49,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:29:49,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:29:49,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:29:49,798 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:29:49,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:29:49,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:29:49,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:29:49,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:29:49,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:29:49,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:29:49,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:29:49,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:29:49,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:29:49,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:29:49,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:29:49,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:29:49,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:29:49,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:29:49,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:29:49,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:29:49,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:29:49,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:29:49,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:29:49,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:29:49,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:29:49,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:29:49,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:29:49,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:29:49,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:29:49,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:29:49,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:29:49,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:29:49,807 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:29:50,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:29:50,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:29:50,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:29:50,036 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:29:50,037 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:29:50,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 04:29:50,183 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:29:50,184 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:29:50,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 04:29:51,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:29:51,330 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:29:51,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 04:29:51,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b377ac55f/c4ad02c661d84d7eaf96ffed08e5e8c4/FLAG7a3d624aa [2024-06-28 04:29:51,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b377ac55f/c4ad02c661d84d7eaf96ffed08e5e8c4 [2024-06-28 04:29:51,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:29:51,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:29:51,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:29:51,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:29:51,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:29:51,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:29:50" (1/2) ... [2024-06-28 04:29:51,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690a4f60 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:29:51, skipping insertion in model container [2024-06-28 04:29:51,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:29:50" (1/2) ... [2024-06-28 04:29:51,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@182b373 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:29:51, skipping insertion in model container [2024-06-28 04:29:51,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:29:51" (2/2) ... [2024-06-28 04:29:51,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690a4f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51, skipping insertion in model container [2024-06-28 04:29:51,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:29:51" (2/2) ... [2024-06-28 04:29:51,362 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:29:51,416 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:29:51,417 INFO L97 edCorrectnessWitness]: Location invariant before [L794-L794] ((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 04:29:51,417 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 04:29:51,417 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:29:51,417 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-28 04:29:51,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:29:51,682 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:29:51,690 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:29:51,786 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:29:51,822 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:29:51,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51 WrapperNode [2024-06-28 04:29:51,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:29:51,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:29:51,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:29:51,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:29:51,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,880 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-28 04:29:51,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:29:51,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:29:51,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:29:51,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:29:51,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,902 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 04:29:51,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:29:51,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:29:51,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:29:51,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:29:51,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (1/1) ... [2024-06-28 04:29:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:29:51,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:29:51,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:29:51,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:29:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:29:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:29:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:29:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:29:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:29:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:29:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:29:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:29:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:29:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:29:51,989 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:29:52,115 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:29:52,117 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:29:52,391 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:29:52,391 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:29:52,527 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:29:52,527 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:29:52,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:29:52 BoogieIcfgContainer [2024-06-28 04:29:52,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:29:52,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:29:52,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:29:52,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:29:52,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:29:50" (1/4) ... [2024-06-28 04:29:52,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bce2a13 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:29:52, skipping insertion in model container [2024-06-28 04:29:52,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:29:51" (2/4) ... [2024-06-28 04:29:52,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bce2a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:29:52, skipping insertion in model container [2024-06-28 04:29:52,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:29:51" (3/4) ... [2024-06-28 04:29:52,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bce2a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:29:52, skipping insertion in model container [2024-06-28 04:29:52,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:29:52" (4/4) ... [2024-06-28 04:29:52,537 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2024-06-28 04:29:52,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:29:52,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 04:29:52,550 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:29:52,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:29:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 04:29:52,626 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 04:29:52,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:29:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:29:52,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 04:29:52,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 04:29:52,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:29:52,650 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;@37939770, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:29:52,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 04:29:52,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:29:52,657 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:29:52,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:29:52,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:52,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:29:52,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:52,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 320515457, now seen corresponding path program 1 times [2024-06-28 04:29:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058091129] [2024-06-28 04:29:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058091129] [2024-06-28 04:29:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058091129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:53,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:53,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:29:53,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838416688] [2024-06-28 04:29:53,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:29:53,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:29:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:29:53,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 04:29:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 04:29:53,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:53,352 INFO L124 PetriNetUnfolderBase]: 162/296 cut-off events. [2024-06-28 04:29:53,352 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 04:29:53,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 296 events. 162/296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1026 event pairs, 97 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 596. Up to 288 conditions per place. [2024-06-28 04:29:53,357 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-28 04:29:53,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 111 flow [2024-06-28 04:29:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:29:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:29:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-06-28 04:29:53,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-06-28 04:29:53,368 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 47 transitions. [2024-06-28 04:29:53,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 111 flow [2024-06-28 04:29:53,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:53,371 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 04:29:53,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 04:29:53,376 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 04:29:53,376 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 04:29:53,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:53,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:53,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:53,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:29:53,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:53,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1221856444, now seen corresponding path program 1 times [2024-06-28 04:29:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555193108] [2024-06-28 04:29:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555193108] [2024-06-28 04:29:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555193108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:53,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:29:53,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825708906] [2024-06-28 04:29:53,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:29:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:29:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:29:53,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 04:29:53,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:53,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:53,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 04:29:53,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:53,816 INFO L124 PetriNetUnfolderBase]: 159/291 cut-off events. [2024-06-28 04:29:53,816 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-28 04:29:53,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 291 events. 159/291 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 991 event pairs, 79 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-28 04:29:53,821 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-28 04:29:53,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2024-06-28 04:29:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:29:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:29:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-28 04:29:53,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-06-28 04:29:53,824 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 60 transitions. [2024-06-28 04:29:53,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2024-06-28 04:29:53,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:29:53,829 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-28 04:29:53,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-28 04:29:53,830 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-28 04:29:53,831 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-28 04:29:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:29:53,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:53,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash 777156932, now seen corresponding path program 1 times [2024-06-28 04:29:53,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:53,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127932986] [2024-06-28 04:29:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127932986] [2024-06-28 04:29:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127932986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:54,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:54,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:29:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152932869] [2024-06-28 04:29:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:29:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:29:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:29:54,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 04:29:54,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:54,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:54,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 04:29:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:54,219 INFO L124 PetriNetUnfolderBase]: 153/281 cut-off events. [2024-06-28 04:29:54,219 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-28 04:29:54,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 281 events. 153/281 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 43 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-28 04:29:54,221 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-28 04:29:54,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 205 flow [2024-06-28 04:29:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:29:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:29:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-28 04:29:54,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2024-06-28 04:29:54,224 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 74 transitions. [2024-06-28 04:29:54,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 205 flow [2024-06-28 04:29:54,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:54,226 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 115 flow [2024-06-28 04:29:54,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-28 04:29:54,227 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-06-28 04:29:54,227 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 115 flow [2024-06-28 04:29:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:54,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:54,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:54,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:29:54,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:54,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash 384194663, now seen corresponding path program 1 times [2024-06-28 04:29:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:54,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120466367] [2024-06-28 04:29:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:54,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120466367] [2024-06-28 04:29:54,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120466367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:54,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:54,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673454741] [2024-06-28 04:29:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:54,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 04:29:54,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:54,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:54,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 04:29:54,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:55,015 INFO L124 PetriNetUnfolderBase]: 149/273 cut-off events. [2024-06-28 04:29:55,015 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-28 04:29:55,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 273 events. 149/273 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 895 event pairs, 24 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-28 04:29:55,017 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-28 04:29:55,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 219 flow [2024-06-28 04:29:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:29:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:29:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-28 04:29:55,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-06-28 04:29:55,018 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 115 flow. Second operand 6 states and 82 transitions. [2024-06-28 04:29:55,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 219 flow [2024-06-28 04:29:55,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 204 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:55,020 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 112 flow [2024-06-28 04:29:55,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-06-28 04:29:55,021 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-28 04:29:55,021 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 112 flow [2024-06-28 04:29:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:55,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:55,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:55,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:29:55,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:55,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -206677035, now seen corresponding path program 1 times [2024-06-28 04:29:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467618189] [2024-06-28 04:29:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467618189] [2024-06-28 04:29:55,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467618189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:55,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:55,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:29:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907851175] [2024-06-28 04:29:55,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:55,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:29:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:29:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:29:55,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:55,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-06-28 04:29:55,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:55,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:55,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:55,528 INFO L124 PetriNetUnfolderBase]: 147/270 cut-off events. [2024-06-28 04:29:55,528 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-28 04:29:55,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 270 events. 147/270 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 882 event pairs, 53 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 780. Up to 259 conditions per place. [2024-06-28 04:29:55,529 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2024-06-28 04:29:55,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 192 flow [2024-06-28 04:29:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:29:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:29:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-06-28 04:29:55,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-06-28 04:29:55,531 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 112 flow. Second operand 5 states and 53 transitions. [2024-06-28 04:29:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 192 flow [2024-06-28 04:29:55,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 172 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:55,536 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 119 flow [2024-06-28 04:29:55,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-06-28 04:29:55,540 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-06-28 04:29:55,540 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 119 flow [2024-06-28 04:29:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2024-06-28 04:29:55,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:55,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:29:55,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:55,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2112020171, now seen corresponding path program 1 times [2024-06-28 04:29:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116268395] [2024-06-28 04:29:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116268395] [2024-06-28 04:29:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116268395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:55,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:55,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114943578] [2024-06-28 04:29:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:55,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:55,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:55,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:55,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:55,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:55,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:56,053 INFO L124 PetriNetUnfolderBase]: 149/275 cut-off events. [2024-06-28 04:29:56,054 INFO L125 PetriNetUnfolderBase]: For 498/501 co-relation queries the response was YES. [2024-06-28 04:29:56,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 275 events. 149/275 cut-off events. For 498/501 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 921 event pairs, 52 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 822. Up to 237 conditions per place. [2024-06-28 04:29:56,055 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2024-06-28 04:29:56,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 245 flow [2024-06-28 04:29:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:29:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:29:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-28 04:29:56,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:29:56,057 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 119 flow. Second operand 6 states and 66 transitions. [2024-06-28 04:29:56,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 245 flow [2024-06-28 04:29:56,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 234 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:56,058 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 176 flow [2024-06-28 04:29:56,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 04:29:56,059 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2024-06-28 04:29:56,059 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 176 flow [2024-06-28 04:29:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:56,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:56,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:56,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:29:56,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:56,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash 974479412, now seen corresponding path program 1 times [2024-06-28 04:29:56,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:56,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286118962] [2024-06-28 04:29:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:56,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:56,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:56,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286118962] [2024-06-28 04:29:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286118962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545610392] [2024-06-28 04:29:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:56,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:56,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:56,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:56,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:56,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:56,524 INFO L124 PetriNetUnfolderBase]: 156/287 cut-off events. [2024-06-28 04:29:56,524 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2024-06-28 04:29:56,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 287 events. 156/287 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 964 event pairs, 51 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 989. Up to 264 conditions per place. [2024-06-28 04:29:56,526 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 04:29:56,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 328 flow [2024-06-28 04:29:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 04:29:56,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-28 04:29:56,528 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 176 flow. Second operand 7 states and 73 transitions. [2024-06-28 04:29:56,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 328 flow [2024-06-28 04:29:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:56,530 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 231 flow [2024-06-28 04:29:56,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-28 04:29:56,530 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2024-06-28 04:29:56,530 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 231 flow [2024-06-28 04:29:56,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:56,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:56,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:29:56,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:56,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -374570946, now seen corresponding path program 2 times [2024-06-28 04:29:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:56,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754190800] [2024-06-28 04:29:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:56,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754190800] [2024-06-28 04:29:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754190800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240701622] [2024-06-28 04:29:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:56,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:56,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:56,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:56,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:56,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:57,007 INFO L124 PetriNetUnfolderBase]: 159/292 cut-off events. [2024-06-28 04:29:57,007 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-28 04:29:57,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 292 events. 159/292 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 987 event pairs, 50 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1086. Up to 266 conditions per place. [2024-06-28 04:29:57,009 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2024-06-28 04:29:57,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 366 flow [2024-06-28 04:29:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:29:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:29:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 04:29:57,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 04:29:57,010 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 231 flow. Second operand 6 states and 64 transitions. [2024-06-28 04:29:57,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 366 flow [2024-06-28 04:29:57,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:57,012 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 265 flow [2024-06-28 04:29:57,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-28 04:29:57,013 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2024-06-28 04:29:57,013 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 265 flow [2024-06-28 04:29:57,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:57,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:57,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:57,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:29:57,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:57,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:57,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1048123148, now seen corresponding path program 3 times [2024-06-28 04:29:57,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862717724] [2024-06-28 04:29:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:57,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862717724] [2024-06-28 04:29:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862717724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082202174] [2024-06-28 04:29:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:57,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:57,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:57,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:57,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:57,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:57,501 INFO L124 PetriNetUnfolderBase]: 154/285 cut-off events. [2024-06-28 04:29:57,501 INFO L125 PetriNetUnfolderBase]: For 1202/1205 co-relation queries the response was YES. [2024-06-28 04:29:57,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 285 events. 154/285 cut-off events. For 1202/1205 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 964 event pairs, 53 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 1081. Up to 239 conditions per place. [2024-06-28 04:29:57,503 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 29 selfloop transitions, 16 changer transitions 0/47 dead transitions. [2024-06-28 04:29:57,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 371 flow [2024-06-28 04:29:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:29:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:29:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-28 04:29:57,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735632183908046 [2024-06-28 04:29:57,504 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 265 flow. Second operand 6 states and 65 transitions. [2024-06-28 04:29:57,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 371 flow [2024-06-28 04:29:57,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 341 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:57,506 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 274 flow [2024-06-28 04:29:57,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-28 04:29:57,507 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 04:29:57,507 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 274 flow [2024-06-28 04:29:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:57,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:57,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:57,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:29:57,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:57,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1048115212, now seen corresponding path program 1 times [2024-06-28 04:29:57,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653723935] [2024-06-28 04:29:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653723935] [2024-06-28 04:29:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653723935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:57,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:57,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:57,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111487053] [2024-06-28 04:29:57,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:57,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:57,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:57,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 274 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:57,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:57,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:57,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:58,112 INFO L124 PetriNetUnfolderBase]: 173/318 cut-off events. [2024-06-28 04:29:58,112 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2024-06-28 04:29:58,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 318 events. 173/318 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1108 event pairs, 38 based on Foata normal form. 4/317 useless extension candidates. Maximal degree in co-relation 1174. Up to 192 conditions per place. [2024-06-28 04:29:58,114 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 38 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2024-06-28 04:29:58,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 500 flow [2024-06-28 04:29:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 04:29:58,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 04:29:58,116 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 274 flow. Second operand 7 states and 84 transitions. [2024-06-28 04:29:58,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 500 flow [2024-06-28 04:29:58,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 455 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:58,118 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 350 flow [2024-06-28 04:29:58,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 04:29:58,119 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-28 04:29:58,119 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 350 flow [2024-06-28 04:29:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:58,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:58,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:58,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:29:58,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:58,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1858333738, now seen corresponding path program 1 times [2024-06-28 04:29:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957200826] [2024-06-28 04:29:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:58,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957200826] [2024-06-28 04:29:58,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957200826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:58,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:58,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:58,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249309518] [2024-06-28 04:29:58,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:58,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:58,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:58,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:58,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 350 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:58,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:58,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:58,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:58,610 INFO L124 PetriNetUnfolderBase]: 183/334 cut-off events. [2024-06-28 04:29:58,611 INFO L125 PetriNetUnfolderBase]: For 1468/1468 co-relation queries the response was YES. [2024-06-28 04:29:58,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 334 events. 183/334 cut-off events. For 1468/1468 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1180 event pairs, 33 based on Foata normal form. 2/335 useless extension candidates. Maximal degree in co-relation 1385. Up to 281 conditions per place. [2024-06-28 04:29:58,613 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 53 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-28 04:29:58,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 570 flow [2024-06-28 04:29:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 04:29:58,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-28 04:29:58,614 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 350 flow. Second operand 8 states and 86 transitions. [2024-06-28 04:29:58,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 570 flow [2024-06-28 04:29:58,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 546 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:58,617 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 421 flow [2024-06-28 04:29:58,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-28 04:29:58,618 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2024-06-28 04:29:58,618 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 421 flow [2024-06-28 04:29:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:58,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:58,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:29:58,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:58,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1690785042, now seen corresponding path program 2 times [2024-06-28 04:29:58,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:58,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831963963] [2024-06-28 04:29:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831963963] [2024-06-28 04:29:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831963963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:58,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755355799] [2024-06-28 04:29:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:58,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:58,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:58,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:58,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:58,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:58,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:58,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:59,181 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-28 04:29:59,181 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2024-06-28 04:29:59,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 344 events. 189/344 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1218 event pairs, 32 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1571. Up to 285 conditions per place. [2024-06-28 04:29:59,184 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 52 selfloop transitions, 18 changer transitions 0/72 dead transitions. [2024-06-28 04:29:59,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 625 flow [2024-06-28 04:29:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:59,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 04:29:59,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:29:59,185 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 421 flow. Second operand 7 states and 77 transitions. [2024-06-28 04:29:59,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 625 flow [2024-06-28 04:29:59,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 603 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:59,189 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 467 flow [2024-06-28 04:29:59,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-06-28 04:29:59,190 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 39 predicate places. [2024-06-28 04:29:59,190 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 467 flow [2024-06-28 04:29:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:59,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:59,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:59,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:29:59,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:59,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1273202994, now seen corresponding path program 3 times [2024-06-28 04:29:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967016504] [2024-06-28 04:29:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967016504] [2024-06-28 04:29:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967016504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936363928] [2024-06-28 04:29:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:59,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:29:59,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:59,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:59,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:29:59,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:59,691 INFO L124 PetriNetUnfolderBase]: 200/362 cut-off events. [2024-06-28 04:29:59,692 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-28 04:29:59,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 362 events. 200/362 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1300 event pairs, 32 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1758. Up to 285 conditions per place. [2024-06-28 04:29:59,694 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 52 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-28 04:29:59,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 731 flow [2024-06-28 04:29:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 04:29:59,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-28 04:29:59,695 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 467 flow. Second operand 7 states and 78 transitions. [2024-06-28 04:29:59,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 731 flow [2024-06-28 04:29:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 679 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:59,699 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 519 flow [2024-06-28 04:29:59,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-28 04:29:59,700 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2024-06-28 04:29:59,700 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 519 flow [2024-06-28 04:29:59,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:59,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:59,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:59,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:29:59,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:29:59,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1277844624, now seen corresponding path program 4 times [2024-06-28 04:29:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:59,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826473126] [2024-06-28 04:29:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826473126] [2024-06-28 04:30:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826473126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424433981] [2024-06-28 04:30:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:00,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:00,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:00,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:00,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:00,252 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2024-06-28 04:30:00,252 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2024-06-28 04:30:00,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 383 events. 210/383 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1415 event pairs, 39 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 1771. Up to 193 conditions per place. [2024-06-28 04:30:00,254 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 49 selfloop transitions, 31 changer transitions 0/82 dead transitions. [2024-06-28 04:30:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 803 flow [2024-06-28 04:30:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 04:30:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236453201970443 [2024-06-28 04:30:00,256 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 519 flow. Second operand 7 states and 86 transitions. [2024-06-28 04:30:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 803 flow [2024-06-28 04:30:00,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 781 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 04:30:00,261 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 621 flow [2024-06-28 04:30:00,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-06-28 04:30:00,261 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-28 04:30:00,262 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 621 flow [2024-06-28 04:30:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:00,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:00,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:00,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:30:00,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:00,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1868167476, now seen corresponding path program 1 times [2024-06-28 04:30:00,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:00,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993927346] [2024-06-28 04:30:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:00,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:00,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993927346] [2024-06-28 04:30:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993927346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:00,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:00,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:00,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772306612] [2024-06-28 04:30:00,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:00,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:00,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:00,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:00,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:00,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:00,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:01,009 INFO L124 PetriNetUnfolderBase]: 230/435 cut-off events. [2024-06-28 04:30:01,010 INFO L125 PetriNetUnfolderBase]: For 3516/3516 co-relation queries the response was YES. [2024-06-28 04:30:01,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2102 conditions, 435 events. 230/435 cut-off events. For 3516/3516 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1712 event pairs, 42 based on Foata normal form. 14/443 useless extension candidates. Maximal degree in co-relation 2065. Up to 209 conditions per place. [2024-06-28 04:30:01,012 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 35 changer transitions 0/89 dead transitions. [2024-06-28 04:30:01,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 921 flow [2024-06-28 04:30:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 04:30:01,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 04:30:01,016 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 621 flow. Second operand 8 states and 96 transitions. [2024-06-28 04:30:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 921 flow [2024-06-28 04:30:01,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 878 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 04:30:01,022 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 666 flow [2024-06-28 04:30:01,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-06-28 04:30:01,023 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-06-28 04:30:01,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 666 flow [2024-06-28 04:30:01,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:01,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:01,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:30:01,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:01,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1379521269, now seen corresponding path program 1 times [2024-06-28 04:30:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810885314] [2024-06-28 04:30:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:01,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810885314] [2024-06-28 04:30:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810885314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961198373] [2024-06-28 04:30:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:01,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:01,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:01,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 666 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:01,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:01,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:01,779 INFO L124 PetriNetUnfolderBase]: 237/445 cut-off events. [2024-06-28 04:30:01,779 INFO L125 PetriNetUnfolderBase]: For 2952/2952 co-relation queries the response was YES. [2024-06-28 04:30:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 445 events. 237/445 cut-off events. For 2952/2952 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1781 event pairs, 44 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2203. Up to 386 conditions per place. [2024-06-28 04:30:01,782 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 68 selfloop transitions, 20 changer transitions 0/90 dead transitions. [2024-06-28 04:30:01,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 942 flow [2024-06-28 04:30:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 04:30:01,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:30:01,783 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 666 flow. Second operand 8 states and 87 transitions. [2024-06-28 04:30:01,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 942 flow [2024-06-28 04:30:01,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 856 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:01,791 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 697 flow [2024-06-28 04:30:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-06-28 04:30:01,792 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2024-06-28 04:30:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 697 flow [2024-06-28 04:30:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:01,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:01,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:30:01,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:01,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2022917237, now seen corresponding path program 2 times [2024-06-28 04:30:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817305637] [2024-06-28 04:30:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817305637] [2024-06-28 04:30:02,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817305637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:02,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:02,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625884105] [2024-06-28 04:30:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:02,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:02,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:02,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:02,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:02,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:02,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:02,676 INFO L124 PetriNetUnfolderBase]: 254/474 cut-off events. [2024-06-28 04:30:02,676 INFO L125 PetriNetUnfolderBase]: For 3310/3310 co-relation queries the response was YES. [2024-06-28 04:30:02,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 474 events. 254/474 cut-off events. For 3310/3310 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1933 event pairs, 51 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2349. Up to 408 conditions per place. [2024-06-28 04:30:02,679 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 71 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-06-28 04:30:02,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 1060 flow [2024-06-28 04:30:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 04:30:02,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 04:30:02,681 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 697 flow. Second operand 8 states and 85 transitions. [2024-06-28 04:30:02,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 98 transitions, 1060 flow [2024-06-28 04:30:02,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 1010 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:30:02,693 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 874 flow [2024-06-28 04:30:02,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2024-06-28 04:30:02,693 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-28 04:30:02,694 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 874 flow [2024-06-28 04:30:02,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:02,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:02,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:02,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:30:02,694 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:02,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1799688582, now seen corresponding path program 1 times [2024-06-28 04:30:02,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:02,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036348188] [2024-06-28 04:30:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036348188] [2024-06-28 04:30:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036348188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585792829] [2024-06-28 04:30:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:03,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:03,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:03,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:03,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 874 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:03,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:03,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:03,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:03,221 INFO L124 PetriNetUnfolderBase]: 260/484 cut-off events. [2024-06-28 04:30:03,221 INFO L125 PetriNetUnfolderBase]: For 3892/3892 co-relation queries the response was YES. [2024-06-28 04:30:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 484 events. 260/484 cut-off events. For 3892/3892 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1996 event pairs, 54 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2465. Up to 413 conditions per place. [2024-06-28 04:30:03,238 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 24 changer transitions 1/101 dead transitions. [2024-06-28 04:30:03,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1125 flow [2024-06-28 04:30:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 04:30:03,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 04:30:03,239 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 874 flow. Second operand 8 states and 85 transitions. [2024-06-28 04:30:03,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1125 flow [2024-06-28 04:30:03,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 1093 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 04:30:03,250 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 906 flow [2024-06-28 04:30:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-06-28 04:30:03,250 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 66 predicate places. [2024-06-28 04:30:03,251 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 906 flow [2024-06-28 04:30:03,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:03,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:03,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:30:03,252 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:03,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 168048979, now seen corresponding path program 3 times [2024-06-28 04:30:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:03,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453275429] [2024-06-28 04:30:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:03,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453275429] [2024-06-28 04:30:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453275429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768514885] [2024-06-28 04:30:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:03,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:03,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:03,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 906 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:03,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:03,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:03,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:04,088 INFO L124 PetriNetUnfolderBase]: 254/477 cut-off events. [2024-06-28 04:30:04,089 INFO L125 PetriNetUnfolderBase]: For 4140/4140 co-relation queries the response was YES. [2024-06-28 04:30:04,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 477 events. 254/477 cut-off events. For 4140/4140 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1984 event pairs, 46 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2454. Up to 411 conditions per place. [2024-06-28 04:30:04,092 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 74 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-06-28 04:30:04,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 1147 flow [2024-06-28 04:30:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 04:30:04,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:30:04,095 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 906 flow. Second operand 8 states and 88 transitions. [2024-06-28 04:30:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 1147 flow [2024-06-28 04:30:04,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 1093 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:04,108 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 912 flow [2024-06-28 04:30:04,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-06-28 04:30:04,109 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-28 04:30:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 912 flow [2024-06-28 04:30:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:04,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:04,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:30:04,109 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1589845070, now seen corresponding path program 2 times [2024-06-28 04:30:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280808178] [2024-06-28 04:30:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280808178] [2024-06-28 04:30:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280808178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:04,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293975730] [2024-06-28 04:30:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:04,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:04,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:04,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:04,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:04,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:04,630 INFO L124 PetriNetUnfolderBase]: 260/488 cut-off events. [2024-06-28 04:30:04,631 INFO L125 PetriNetUnfolderBase]: For 4795/4795 co-relation queries the response was YES. [2024-06-28 04:30:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 488 events. 260/488 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2036 event pairs, 52 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2523. Up to 392 conditions per place. [2024-06-28 04:30:04,634 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 69 selfloop transitions, 28 changer transitions 1/100 dead transitions. [2024-06-28 04:30:04,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 1159 flow [2024-06-28 04:30:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 04:30:04,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2024-06-28 04:30:04,635 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 912 flow. Second operand 7 states and 76 transitions. [2024-06-28 04:30:04,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 1159 flow [2024-06-28 04:30:04,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 1072 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:04,646 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 902 flow [2024-06-28 04:30:04,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=902, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-06-28 04:30:04,646 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-28 04:30:04,646 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 902 flow [2024-06-28 04:30:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:04,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:04,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:30:04,647 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:04,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 975327264, now seen corresponding path program 3 times [2024-06-28 04:30:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701195991] [2024-06-28 04:30:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701195991] [2024-06-28 04:30:04,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701195991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:04,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:04,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:04,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555774598] [2024-06-28 04:30:04,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:04,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:04,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:05,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:05,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:05,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:05,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:05,176 INFO L124 PetriNetUnfolderBase]: 258/487 cut-off events. [2024-06-28 04:30:05,176 INFO L125 PetriNetUnfolderBase]: For 5301/5301 co-relation queries the response was YES. [2024-06-28 04:30:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 487 events. 258/487 cut-off events. For 5301/5301 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2039 event pairs, 54 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2501. Up to 259 conditions per place. [2024-06-28 04:30:05,179 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 48 selfloop transitions, 51 changer transitions 1/102 dead transitions. [2024-06-28 04:30:05,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 1233 flow [2024-06-28 04:30:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 04:30:05,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187192118226601 [2024-06-28 04:30:05,181 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 902 flow. Second operand 7 states and 85 transitions. [2024-06-28 04:30:05,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 1233 flow [2024-06-28 04:30:05,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 102 transitions, 1166 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:30:05,193 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 964 flow [2024-06-28 04:30:05,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-06-28 04:30:05,194 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-06-28 04:30:05,194 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 964 flow [2024-06-28 04:30:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:05,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:05,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:30:05,194 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:05,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 171858414, now seen corresponding path program 4 times [2024-06-28 04:30:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558252239] [2024-06-28 04:30:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558252239] [2024-06-28 04:30:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558252239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578761578] [2024-06-28 04:30:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:05,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:05,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 964 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:05,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:05,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:05,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:05,692 INFO L124 PetriNetUnfolderBase]: 253/480 cut-off events. [2024-06-28 04:30:05,692 INFO L125 PetriNetUnfolderBase]: For 4964/4964 co-relation queries the response was YES. [2024-06-28 04:30:05,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 480 events. 253/480 cut-off events. For 4964/4964 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2027 event pairs, 56 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2535. Up to 257 conditions per place. [2024-06-28 04:30:05,695 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 54 selfloop transitions, 45 changer transitions 1/102 dead transitions. [2024-06-28 04:30:05,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 1257 flow [2024-06-28 04:30:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 04:30:05,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-06-28 04:30:05,697 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 964 flow. Second operand 7 states and 82 transitions. [2024-06-28 04:30:05,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 1257 flow [2024-06-28 04:30:05,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 1142 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:30:05,708 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 958 flow [2024-06-28 04:30:05,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=958, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-06-28 04:30:05,709 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2024-06-28 04:30:05,709 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 958 flow [2024-06-28 04:30:05,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:05,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:05,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:30:05,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:05,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2078340789, now seen corresponding path program 1 times [2024-06-28 04:30:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322703905] [2024-06-28 04:30:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322703905] [2024-06-28 04:30:06,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322703905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:06,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687237073] [2024-06-28 04:30:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:06,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:06,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 958 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:06,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:06,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:06,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:06,297 INFO L124 PetriNetUnfolderBase]: 245/470 cut-off events. [2024-06-28 04:30:06,297 INFO L125 PetriNetUnfolderBase]: For 5059/5059 co-relation queries the response was YES. [2024-06-28 04:30:06,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 470 events. 245/470 cut-off events. For 5059/5059 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1998 event pairs, 80 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2509. Up to 418 conditions per place. [2024-06-28 04:30:06,300 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 78 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-28 04:30:06,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 1189 flow [2024-06-28 04:30:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 04:30:06,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-28 04:30:06,301 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 958 flow. Second operand 7 states and 73 transitions. [2024-06-28 04:30:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 1189 flow [2024-06-28 04:30:06,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 1125 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:30:06,314 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 964 flow [2024-06-28 04:30:06,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2024-06-28 04:30:06,314 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 75 predicate places. [2024-06-28 04:30:06,314 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 964 flow [2024-06-28 04:30:06,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:06,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:06,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:06,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:30:06,315 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:06,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 958693345, now seen corresponding path program 2 times [2024-06-28 04:30:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:06,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851664770] [2024-06-28 04:30:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851664770] [2024-06-28 04:30:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851664770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:06,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:06,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:30:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925371383] [2024-06-28 04:30:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:30:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:06,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:30:06,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:30:06,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:06,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 964 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:06,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:06,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:06,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:06,990 INFO L124 PetriNetUnfolderBase]: 241/463 cut-off events. [2024-06-28 04:30:06,991 INFO L125 PetriNetUnfolderBase]: For 5159/5159 co-relation queries the response was YES. [2024-06-28 04:30:06,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 463 events. 241/463 cut-off events. For 5159/5159 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1956 event pairs, 78 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 2432. Up to 402 conditions per place. [2024-06-28 04:30:06,994 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 76 selfloop transitions, 24 changer transitions 0/102 dead transitions. [2024-06-28 04:30:06,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 1200 flow [2024-06-28 04:30:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 04:30:06,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-28 04:30:06,996 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 964 flow. Second operand 8 states and 82 transitions. [2024-06-28 04:30:06,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 1200 flow [2024-06-28 04:30:07,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 1157 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:30:07,008 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 1005 flow [2024-06-28 04:30:07,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1005, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-06-28 04:30:07,009 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places. [2024-06-28 04:30:07,009 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 1005 flow [2024-06-28 04:30:07,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:07,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:07,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:07,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:30:07,010 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:07,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash -411902797, now seen corresponding path program 1 times [2024-06-28 04:30:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:07,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156406577] [2024-06-28 04:30:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:07,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156406577] [2024-06-28 04:30:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156406577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:07,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:07,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623022558] [2024-06-28 04:30:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:07,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:07,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 1005 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:07,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:07,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:07,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:07,771 INFO L124 PetriNetUnfolderBase]: 250/482 cut-off events. [2024-06-28 04:30:07,771 INFO L125 PetriNetUnfolderBase]: For 5709/5709 co-relation queries the response was YES. [2024-06-28 04:30:07,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2587 conditions, 482 events. 250/482 cut-off events. For 5709/5709 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2094 event pairs, 49 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2536. Up to 384 conditions per place. [2024-06-28 04:30:07,775 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 87 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-28 04:30:07,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1277 flow [2024-06-28 04:30:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 04:30:07,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524904214559387 [2024-06-28 04:30:07,776 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 1005 flow. Second operand 9 states and 92 transitions. [2024-06-28 04:30:07,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1277 flow [2024-06-28 04:30:07,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 1227 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:30:07,789 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 1019 flow [2024-06-28 04:30:07,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1019, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-28 04:30:07,789 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 83 predicate places. [2024-06-28 04:30:07,789 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 1019 flow [2024-06-28 04:30:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:07,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:07,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:30:07,790 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:07,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1922814863, now seen corresponding path program 2 times [2024-06-28 04:30:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197774059] [2024-06-28 04:30:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197774059] [2024-06-28 04:30:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197774059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:08,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:08,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517457587] [2024-06-28 04:30:08,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:08,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:08,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 1019 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:08,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:08,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:08,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:08,536 INFO L124 PetriNetUnfolderBase]: 259/501 cut-off events. [2024-06-28 04:30:08,537 INFO L125 PetriNetUnfolderBase]: For 5836/5836 co-relation queries the response was YES. [2024-06-28 04:30:08,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 501 events. 259/501 cut-off events. For 5836/5836 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2225 event pairs, 73 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2606. Up to 424 conditions per place. [2024-06-28 04:30:08,541 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 89 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-28 04:30:08,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 115 transitions, 1301 flow [2024-06-28 04:30:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 04:30:08,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 04:30:08,542 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 1019 flow. Second operand 9 states and 95 transitions. [2024-06-28 04:30:08,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 115 transitions, 1301 flow [2024-06-28 04:30:08,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 115 transitions, 1237 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:08,556 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 1027 flow [2024-06-28 04:30:08,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-28 04:30:08,557 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 04:30:08,557 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 1027 flow [2024-06-28 04:30:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:08,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:08,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:30:08,558 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:08,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1179327957, now seen corresponding path program 3 times [2024-06-28 04:30:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912167403] [2024-06-28 04:30:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912167403] [2024-06-28 04:30:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912167403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57561131] [2024-06-28 04:30:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:09,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:09,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:09,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:09,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:09,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:09,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:09,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:09,388 INFO L124 PetriNetUnfolderBase]: 263/509 cut-off events. [2024-06-28 04:30:09,388 INFO L125 PetriNetUnfolderBase]: For 6364/6364 co-relation queries the response was YES. [2024-06-28 04:30:09,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 509 events. 263/509 cut-off events. For 6364/6364 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2271 event pairs, 72 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2651. Up to 433 conditions per place. [2024-06-28 04:30:09,396 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 86 selfloop transitions, 27 changer transitions 0/115 dead transitions. [2024-06-28 04:30:09,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1305 flow [2024-06-28 04:30:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 04:30:09,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 04:30:09,421 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 1027 flow. Second operand 9 states and 95 transitions. [2024-06-28 04:30:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1305 flow [2024-06-28 04:30:09,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 1255 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:09,436 INFO L231 Difference]: Finished difference. Result has 117 places, 100 transitions, 1048 flow [2024-06-28 04:30:09,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1048, PETRI_PLACES=117, PETRI_TRANSITIONS=100} [2024-06-28 04:30:09,436 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 89 predicate places. [2024-06-28 04:30:09,436 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 100 transitions, 1048 flow [2024-06-28 04:30:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:09,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:09,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:30:09,437 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:09,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1920937069, now seen corresponding path program 1 times [2024-06-28 04:30:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113525773] [2024-06-28 04:30:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:09,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:09,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113525773] [2024-06-28 04:30:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113525773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843692244] [2024-06-28 04:30:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:09,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:09,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:09,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:09,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 100 transitions, 1048 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:09,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:09,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:09,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:10,093 INFO L124 PetriNetUnfolderBase]: 266/515 cut-off events. [2024-06-28 04:30:10,093 INFO L125 PetriNetUnfolderBase]: For 6734/6734 co-relation queries the response was YES. [2024-06-28 04:30:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 515 events. 266/515 cut-off events. For 6734/6734 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2279 event pairs, 75 based on Foata normal form. 1/513 useless extension candidates. Maximal degree in co-relation 2710. Up to 435 conditions per place. [2024-06-28 04:30:10,097 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 85 selfloop transitions, 26 changer transitions 1/114 dead transitions. [2024-06-28 04:30:10,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 114 transitions, 1334 flow [2024-06-28 04:30:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 04:30:10,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-28 04:30:10,099 INFO L175 Difference]: Start difference. First operand has 117 places, 100 transitions, 1048 flow. Second operand 8 states and 86 transitions. [2024-06-28 04:30:10,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 114 transitions, 1334 flow [2024-06-28 04:30:10,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 1275 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:10,116 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 1062 flow [2024-06-28 04:30:10,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-28 04:30:10,116 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2024-06-28 04:30:10,116 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 1062 flow [2024-06-28 04:30:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:10,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:10,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:10,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:30:10,117 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:10,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash 914491097, now seen corresponding path program 4 times [2024-06-28 04:30:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:10,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070031519] [2024-06-28 04:30:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070031519] [2024-06-28 04:30:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070031519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:10,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353363270] [2024-06-28 04:30:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:10,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:10,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:10,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:10,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:10,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:10,908 INFO L124 PetriNetUnfolderBase]: 273/531 cut-off events. [2024-06-28 04:30:10,909 INFO L125 PetriNetUnfolderBase]: For 7392/7392 co-relation queries the response was YES. [2024-06-28 04:30:10,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 531 events. 273/531 cut-off events. For 7392/7392 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2399 event pairs, 52 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 2777. Up to 454 conditions per place. [2024-06-28 04:30:10,912 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-28 04:30:10,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 119 transitions, 1359 flow [2024-06-28 04:30:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 04:30:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 04:30:10,918 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 1062 flow. Second operand 9 states and 96 transitions. [2024-06-28 04:30:10,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 119 transitions, 1359 flow [2024-06-28 04:30:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 1309 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:10,936 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 1086 flow [2024-06-28 04:30:10,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-28 04:30:10,938 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 94 predicate places. [2024-06-28 04:30:10,938 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 1086 flow [2024-06-28 04:30:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:10,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:10,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:30:10,939 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:10,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash -848684419, now seen corresponding path program 5 times [2024-06-28 04:30:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:10,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085200479] [2024-06-28 04:30:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:11,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085200479] [2024-06-28 04:30:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085200479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:11,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:11,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218238249] [2024-06-28 04:30:11,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:11,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 1086 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:11,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:11,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:11,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:11,773 INFO L124 PetriNetUnfolderBase]: 277/539 cut-off events. [2024-06-28 04:30:11,773 INFO L125 PetriNetUnfolderBase]: For 8055/8055 co-relation queries the response was YES. [2024-06-28 04:30:11,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 539 events. 277/539 cut-off events. For 8055/8055 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2456 event pairs, 52 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 2853. Up to 463 conditions per place. [2024-06-28 04:30:11,777 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 91 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-28 04:30:11,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 119 transitions, 1379 flow [2024-06-28 04:30:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 04:30:11,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 04:30:11,778 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 1086 flow. Second operand 9 states and 96 transitions. [2024-06-28 04:30:11,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 119 transitions, 1379 flow [2024-06-28 04:30:11,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 119 transitions, 1325 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:11,795 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 1105 flow [2024-06-28 04:30:11,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1105, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-28 04:30:11,796 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2024-06-28 04:30:11,796 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 1105 flow [2024-06-28 04:30:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:11,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:11,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:30:11,796 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:11,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash -846003105, now seen corresponding path program 2 times [2024-06-28 04:30:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049951833] [2024-06-28 04:30:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:12,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049951833] [2024-06-28 04:30:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049951833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677903071] [2024-06-28 04:30:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:12,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:12,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 1105 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:12,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:12,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:12,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:12,498 INFO L124 PetriNetUnfolderBase]: 272/525 cut-off events. [2024-06-28 04:30:12,499 INFO L125 PetriNetUnfolderBase]: For 8003/8003 co-relation queries the response was YES. [2024-06-28 04:30:12,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 525 events. 272/525 cut-off events. For 8003/8003 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2393 event pairs, 63 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 2786. Up to 410 conditions per place. [2024-06-28 04:30:12,501 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 75 selfloop transitions, 34 changer transitions 3/114 dead transitions. [2024-06-28 04:30:12,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 114 transitions, 1361 flow [2024-06-28 04:30:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 04:30:12,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2024-06-28 04:30:12,502 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 1105 flow. Second operand 7 states and 76 transitions. [2024-06-28 04:30:12,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 114 transitions, 1361 flow [2024-06-28 04:30:12,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 1298 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:12,519 INFO L231 Difference]: Finished difference. Result has 125 places, 101 transitions, 1085 flow [2024-06-28 04:30:12,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1085, PETRI_PLACES=125, PETRI_TRANSITIONS=101} [2024-06-28 04:30:12,520 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2024-06-28 04:30:12,520 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 101 transitions, 1085 flow [2024-06-28 04:30:12,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:12,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:12,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:12,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:30:12,520 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:12,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1032639227, now seen corresponding path program 6 times [2024-06-28 04:30:12,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986113507] [2024-06-28 04:30:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:13,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986113507] [2024-06-28 04:30:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986113507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:13,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:13,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:13,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909068685] [2024-06-28 04:30:13,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:13,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:13,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:13,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:13,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 101 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:13,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:13,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:13,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:13,347 INFO L124 PetriNetUnfolderBase]: 265/508 cut-off events. [2024-06-28 04:30:13,348 INFO L125 PetriNetUnfolderBase]: For 8863/8863 co-relation queries the response was YES. [2024-06-28 04:30:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 508 events. 265/508 cut-off events. For 8863/8863 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2290 event pairs, 48 based on Foata normal form. 2/509 useless extension candidates. Maximal degree in co-relation 2787. Up to 415 conditions per place. [2024-06-28 04:30:13,350 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 84 selfloop transitions, 33 changer transitions 0/119 dead transitions. [2024-06-28 04:30:13,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 119 transitions, 1400 flow [2024-06-28 04:30:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 04:30:13,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 04:30:13,351 INFO L175 Difference]: Start difference. First operand has 125 places, 101 transitions, 1085 flow. Second operand 9 states and 96 transitions. [2024-06-28 04:30:13,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 119 transitions, 1400 flow [2024-06-28 04:30:13,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 119 transitions, 1271 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:30:13,369 INFO L231 Difference]: Finished difference. Result has 126 places, 104 transitions, 1069 flow [2024-06-28 04:30:13,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=126, PETRI_TRANSITIONS=104} [2024-06-28 04:30:13,370 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 98 predicate places. [2024-06-28 04:30:13,370 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 104 transitions, 1069 flow [2024-06-28 04:30:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:13,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:30:13,370 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:13,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1233122841, now seen corresponding path program 7 times [2024-06-28 04:30:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103432301] [2024-06-28 04:30:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103432301] [2024-06-28 04:30:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103432301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:13,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38713644] [2024-06-28 04:30:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:13,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:13,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 104 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:13,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:13,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:13,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:14,142 INFO L124 PetriNetUnfolderBase]: 269/515 cut-off events. [2024-06-28 04:30:14,142 INFO L125 PetriNetUnfolderBase]: For 8470/8470 co-relation queries the response was YES. [2024-06-28 04:30:14,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 515 events. 269/515 cut-off events. For 8470/8470 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2342 event pairs, 40 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 2772. Up to 379 conditions per place. [2024-06-28 04:30:14,145 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 88 selfloop transitions, 28 changer transitions 0/118 dead transitions. [2024-06-28 04:30:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 1351 flow [2024-06-28 04:30:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 04:30:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 04:30:14,146 INFO L175 Difference]: Start difference. First operand has 126 places, 104 transitions, 1069 flow. Second operand 8 states and 83 transitions. [2024-06-28 04:30:14,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 1351 flow [2024-06-28 04:30:14,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 118 transitions, 1276 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:14,166 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 1080 flow [2024-06-28 04:30:14,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1080, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2024-06-28 04:30:14,166 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 100 predicate places. [2024-06-28 04:30:14,166 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 1080 flow [2024-06-28 04:30:14,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:14,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:14,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:14,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:30:14,167 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:14,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1233183291, now seen corresponding path program 8 times [2024-06-28 04:30:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:14,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527663188] [2024-06-28 04:30:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527663188] [2024-06-28 04:30:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527663188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:14,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:14,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384928877] [2024-06-28 04:30:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:14,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:14,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:14,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:14,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:14,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:14,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:14,902 INFO L124 PetriNetUnfolderBase]: 273/523 cut-off events. [2024-06-28 04:30:14,902 INFO L125 PetriNetUnfolderBase]: For 9042/9042 co-relation queries the response was YES. [2024-06-28 04:30:14,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 523 events. 273/523 cut-off events. For 9042/9042 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2394 event pairs, 57 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 2843. Up to 413 conditions per place. [2024-06-28 04:30:14,904 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 82 selfloop transitions, 35 changer transitions 0/119 dead transitions. [2024-06-28 04:30:14,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 119 transitions, 1370 flow [2024-06-28 04:30:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 04:30:14,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 04:30:14,917 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 1080 flow. Second operand 8 states and 85 transitions. [2024-06-28 04:30:14,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 119 transitions, 1370 flow [2024-06-28 04:30:14,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 119 transitions, 1294 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:14,935 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 1107 flow [2024-06-28 04:30:14,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2024-06-28 04:30:14,935 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2024-06-28 04:30:14,936 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 1107 flow [2024-06-28 04:30:14,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:14,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:14,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:14,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:30:14,936 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:14,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1351270971, now seen corresponding path program 9 times [2024-06-28 04:30:14,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:14,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018979821] [2024-06-28 04:30:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:14,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:15,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018979821] [2024-06-28 04:30:15,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018979821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:15,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:15,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766869347] [2024-06-28 04:30:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:15,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:15,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 1107 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:15,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:15,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:15,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:15,725 INFO L124 PetriNetUnfolderBase]: 277/531 cut-off events. [2024-06-28 04:30:15,725 INFO L125 PetriNetUnfolderBase]: For 8025/8025 co-relation queries the response was YES. [2024-06-28 04:30:15,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 531 events. 277/531 cut-off events. For 8025/8025 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2450 event pairs, 48 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 2845. Up to 415 conditions per place. [2024-06-28 04:30:15,728 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 78 selfloop transitions, 39 changer transitions 0/119 dead transitions. [2024-06-28 04:30:15,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 119 transitions, 1393 flow [2024-06-28 04:30:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 04:30:15,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 04:30:15,730 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 1107 flow. Second operand 8 states and 85 transitions. [2024-06-28 04:30:15,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 119 transitions, 1393 flow [2024-06-28 04:30:15,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 119 transitions, 1312 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:15,746 INFO L231 Difference]: Finished difference. Result has 132 places, 107 transitions, 1128 flow [2024-06-28 04:30:15,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1128, PETRI_PLACES=132, PETRI_TRANSITIONS=107} [2024-06-28 04:30:15,747 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 104 predicate places. [2024-06-28 04:30:15,747 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 107 transitions, 1128 flow [2024-06-28 04:30:15,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:15,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:15,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:15,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:30:15,748 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:15,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:15,748 INFO L85 PathProgramCache]: Analyzing trace with hash 12329909, now seen corresponding path program 1 times [2024-06-28 04:30:15,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:15,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546291460] [2024-06-28 04:30:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:16,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546291460] [2024-06-28 04:30:16,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546291460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:16,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:16,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465688357] [2024-06-28 04:30:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:16,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:16,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 107 transitions, 1128 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:16,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:16,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:16,399 INFO L124 PetriNetUnfolderBase]: 281/540 cut-off events. [2024-06-28 04:30:16,399 INFO L125 PetriNetUnfolderBase]: For 7667/7667 co-relation queries the response was YES. [2024-06-28 04:30:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 540 events. 281/540 cut-off events. For 7667/7667 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2504 event pairs, 77 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 2862. Up to 470 conditions per place. [2024-06-28 04:30:16,402 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 90 selfloop transitions, 25 changer transitions 0/117 dead transitions. [2024-06-28 04:30:16,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 117 transitions, 1390 flow [2024-06-28 04:30:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 04:30:16,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 04:30:16,403 INFO L175 Difference]: Start difference. First operand has 132 places, 107 transitions, 1128 flow. Second operand 9 states and 90 transitions. [2024-06-28 04:30:16,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 117 transitions, 1390 flow [2024-06-28 04:30:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 117 transitions, 1304 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:16,419 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 1111 flow [2024-06-28 04:30:16,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1111, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-06-28 04:30:16,419 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 107 predicate places. [2024-06-28 04:30:16,419 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 1111 flow [2024-06-28 04:30:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:16,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:16,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:16,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:30:16,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:16,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 12626579, now seen corresponding path program 2 times [2024-06-28 04:30:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:16,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147599084] [2024-06-28 04:30:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:16,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:16,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147599084] [2024-06-28 04:30:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147599084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:16,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:16,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:16,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882219771] [2024-06-28 04:30:16,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:16,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:16,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:16,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 1111 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:16,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:16,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:17,046 INFO L124 PetriNetUnfolderBase]: 278/535 cut-off events. [2024-06-28 04:30:17,046 INFO L125 PetriNetUnfolderBase]: For 6782/6782 co-relation queries the response was YES. [2024-06-28 04:30:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 535 events. 278/535 cut-off events. For 6782/6782 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2475 event pairs, 68 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 2748. Up to 445 conditions per place. [2024-06-28 04:30:17,049 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 91 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-28 04:30:17,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 117 transitions, 1361 flow [2024-06-28 04:30:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 04:30:17,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 04:30:17,050 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 1111 flow. Second operand 8 states and 80 transitions. [2024-06-28 04:30:17,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 117 transitions, 1361 flow [2024-06-28 04:30:17,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 117 transitions, 1304 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:17,067 INFO L231 Difference]: Finished difference. Result has 136 places, 108 transitions, 1106 flow [2024-06-28 04:30:17,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1106, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2024-06-28 04:30:17,067 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-28 04:30:17,067 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 1106 flow [2024-06-28 04:30:17,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:17,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:17,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:30:17,067 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -224030149, now seen corresponding path program 10 times [2024-06-28 04:30:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606368931] [2024-06-28 04:30:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606368931] [2024-06-28 04:30:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606368931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:17,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:17,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:17,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660582495] [2024-06-28 04:30:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:17,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:17,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:17,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 1106 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:17,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:17,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:17,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:17,822 INFO L124 PetriNetUnfolderBase]: 295/574 cut-off events. [2024-06-28 04:30:17,822 INFO L125 PetriNetUnfolderBase]: For 10365/10365 co-relation queries the response was YES. [2024-06-28 04:30:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 574 events. 295/574 cut-off events. For 10365/10365 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2682 event pairs, 64 based on Foata normal form. 14/583 useless extension candidates. Maximal degree in co-relation 2810. Up to 297 conditions per place. [2024-06-28 04:30:17,825 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 46 changer transitions 8/125 dead transitions. [2024-06-28 04:30:17,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 125 transitions, 1468 flow [2024-06-28 04:30:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 04:30:17,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-06-28 04:30:17,826 INFO L175 Difference]: Start difference. First operand has 136 places, 108 transitions, 1106 flow. Second operand 8 states and 98 transitions. [2024-06-28 04:30:17,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 125 transitions, 1468 flow [2024-06-28 04:30:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 125 transitions, 1398 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:17,842 INFO L231 Difference]: Finished difference. Result has 137 places, 105 transitions, 1111 flow [2024-06-28 04:30:17,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1111, PETRI_PLACES=137, PETRI_TRANSITIONS=105} [2024-06-28 04:30:17,842 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 109 predicate places. [2024-06-28 04:30:17,843 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 105 transitions, 1111 flow [2024-06-28 04:30:17,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:17,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:17,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:17,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:30:17,843 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 4048941, now seen corresponding path program 1 times [2024-06-28 04:30:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795403493] [2024-06-28 04:30:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795403493] [2024-06-28 04:30:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795403493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406596749] [2024-06-28 04:30:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:18,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:18,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 105 transitions, 1111 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:18,489 INFO L124 PetriNetUnfolderBase]: 265/518 cut-off events. [2024-06-28 04:30:18,489 INFO L125 PetriNetUnfolderBase]: For 6340/6340 co-relation queries the response was YES. [2024-06-28 04:30:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 518 events. 265/518 cut-off events. For 6340/6340 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2412 event pairs, 60 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 2611. Up to 306 conditions per place. [2024-06-28 04:30:18,491 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-06-28 04:30:18,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 115 transitions, 1371 flow [2024-06-28 04:30:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 04:30:18,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-28 04:30:18,500 INFO L175 Difference]: Start difference. First operand has 137 places, 105 transitions, 1111 flow. Second operand 8 states and 90 transitions. [2024-06-28 04:30:18,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 115 transitions, 1371 flow [2024-06-28 04:30:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 115 transitions, 1184 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 04:30:18,516 INFO L231 Difference]: Finished difference. Result has 136 places, 105 transitions, 1017 flow [2024-06-28 04:30:18,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=136, PETRI_TRANSITIONS=105} [2024-06-28 04:30:18,518 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-28 04:30:18,519 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 105 transitions, 1017 flow [2024-06-28 04:30:18,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:18,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:18,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:18,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:30:18,519 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1426812973, now seen corresponding path program 1 times [2024-06-28 04:30:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:18,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821652921] [2024-06-28 04:30:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:19,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:19,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821652921] [2024-06-28 04:30:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821652921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:19,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987050373] [2024-06-28 04:30:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:19,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:19,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 105 transitions, 1017 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:19,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:19,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:19,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:19,225 INFO L124 PetriNetUnfolderBase]: 269/526 cut-off events. [2024-06-28 04:30:19,225 INFO L125 PetriNetUnfolderBase]: For 6388/6388 co-relation queries the response was YES. [2024-06-28 04:30:19,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 526 events. 269/526 cut-off events. For 6388/6388 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2476 event pairs, 64 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 2501. Up to 440 conditions per place. [2024-06-28 04:30:19,228 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 96 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-06-28 04:30:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 121 transitions, 1299 flow [2024-06-28 04:30:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 04:30:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-28 04:30:19,229 INFO L175 Difference]: Start difference. First operand has 136 places, 105 transitions, 1017 flow. Second operand 9 states and 93 transitions. [2024-06-28 04:30:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 121 transitions, 1299 flow [2024-06-28 04:30:19,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 121 transitions, 1200 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:19,246 INFO L231 Difference]: Finished difference. Result has 138 places, 106 transitions, 976 flow [2024-06-28 04:30:19,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=976, PETRI_PLACES=138, PETRI_TRANSITIONS=106} [2024-06-28 04:30:19,247 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 110 predicate places. [2024-06-28 04:30:19,247 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 106 transitions, 976 flow [2024-06-28 04:30:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:19,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:19,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:30:19,247 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:19,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 115915799, now seen corresponding path program 2 times [2024-06-28 04:30:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007623748] [2024-06-28 04:30:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:19,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:19,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007623748] [2024-06-28 04:30:19,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007623748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:19,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:19,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:19,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588724162] [2024-06-28 04:30:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:19,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:19,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:19,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 106 transitions, 976 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:19,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:19,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:19,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:19,894 INFO L124 PetriNetUnfolderBase]: 273/534 cut-off events. [2024-06-28 04:30:19,894 INFO L125 PetriNetUnfolderBase]: For 6769/6769 co-relation queries the response was YES. [2024-06-28 04:30:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2554 conditions, 534 events. 273/534 cut-off events. For 6769/6769 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2525 event pairs, 40 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 2489. Up to 413 conditions per place. [2024-06-28 04:30:19,897 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 95 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-06-28 04:30:19,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 122 transitions, 1260 flow [2024-06-28 04:30:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 04:30:19,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 04:30:19,899 INFO L175 Difference]: Start difference. First operand has 138 places, 106 transitions, 976 flow. Second operand 9 states and 90 transitions. [2024-06-28 04:30:19,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 122 transitions, 1260 flow [2024-06-28 04:30:19,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 122 transitions, 1212 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:19,920 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 992 flow [2024-06-28 04:30:19,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=992, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2024-06-28 04:30:19,920 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 112 predicate places. [2024-06-28 04:30:19,920 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 992 flow [2024-06-28 04:30:19,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:19,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:19,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:19,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:30:19,921 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:19,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash -594660133, now seen corresponding path program 3 times [2024-06-28 04:30:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642920650] [2024-06-28 04:30:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:20,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642920650] [2024-06-28 04:30:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642920650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:20,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:20,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768410143] [2024-06-28 04:30:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:20,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:20,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:20,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 992 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:20,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:20,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:20,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:20,590 INFO L124 PetriNetUnfolderBase]: 277/542 cut-off events. [2024-06-28 04:30:20,590 INFO L125 PetriNetUnfolderBase]: For 7103/7103 co-relation queries the response was YES. [2024-06-28 04:30:20,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 542 events. 277/542 cut-off events. For 7103/7103 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2553 event pairs, 68 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 2551. Up to 454 conditions per place. [2024-06-28 04:30:20,594 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 93 selfloop transitions, 27 changer transitions 0/122 dead transitions. [2024-06-28 04:30:20,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 122 transitions, 1284 flow [2024-06-28 04:30:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 04:30:20,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-28 04:30:20,595 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 992 flow. Second operand 9 states and 93 transitions. [2024-06-28 04:30:20,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 122 transitions, 1284 flow [2024-06-28 04:30:20,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 122 transitions, 1230 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:20,615 INFO L231 Difference]: Finished difference. Result has 142 places, 108 transitions, 1009 flow [2024-06-28 04:30:20,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1009, PETRI_PLACES=142, PETRI_TRANSITIONS=108} [2024-06-28 04:30:20,616 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 114 predicate places. [2024-06-28 04:30:20,616 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 108 transitions, 1009 flow [2024-06-28 04:30:20,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:20,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:20,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:20,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:30:20,616 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:20,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -593885443, now seen corresponding path program 4 times [2024-06-28 04:30:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084642431] [2024-06-28 04:30:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084642431] [2024-06-28 04:30:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084642431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:21,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263210578] [2024-06-28 04:30:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:21,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:21,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 108 transitions, 1009 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:21,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:21,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:21,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:21,306 INFO L124 PetriNetUnfolderBase]: 281/550 cut-off events. [2024-06-28 04:30:21,306 INFO L125 PetriNetUnfolderBase]: For 7657/7657 co-relation queries the response was YES. [2024-06-28 04:30:21,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 550 events. 281/550 cut-off events. For 7657/7657 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2604 event pairs, 67 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 2595. Up to 446 conditions per place. [2024-06-28 04:30:21,309 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 94 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-28 04:30:21,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 123 transitions, 1301 flow [2024-06-28 04:30:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 04:30:21,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015325670498083 [2024-06-28 04:30:21,310 INFO L175 Difference]: Start difference. First operand has 142 places, 108 transitions, 1009 flow. Second operand 9 states and 94 transitions. [2024-06-28 04:30:21,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 123 transitions, 1301 flow [2024-06-28 04:30:21,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 123 transitions, 1242 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:21,330 INFO L231 Difference]: Finished difference. Result has 144 places, 109 transitions, 1022 flow [2024-06-28 04:30:21,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1022, PETRI_PLACES=144, PETRI_TRANSITIONS=109} [2024-06-28 04:30:21,331 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2024-06-28 04:30:21,331 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 109 transitions, 1022 flow [2024-06-28 04:30:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:21,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:30:21,332 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:21,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 838945213, now seen corresponding path program 5 times [2024-06-28 04:30:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488109312] [2024-06-28 04:30:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488109312] [2024-06-28 04:30:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488109312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:21,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:21,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601347929] [2024-06-28 04:30:21,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:21,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:21,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 109 transitions, 1022 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:21,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:21,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:21,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:22,045 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-28 04:30:22,045 INFO L125 PetriNetUnfolderBase]: For 8185/8185 co-relation queries the response was YES. [2024-06-28 04:30:22,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 558 events. 285/558 cut-off events. For 8185/8185 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2670 event pairs, 45 based on Foata normal form. 2/557 useless extension candidates. Maximal degree in co-relation 2647. Up to 393 conditions per place. [2024-06-28 04:30:22,048 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 91 selfloop transitions, 29 changer transitions 0/122 dead transitions. [2024-06-28 04:30:22,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 122 transitions, 1304 flow [2024-06-28 04:30:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 04:30:22,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34913793103448276 [2024-06-28 04:30:22,061 INFO L175 Difference]: Start difference. First operand has 144 places, 109 transitions, 1022 flow. Second operand 8 states and 81 transitions. [2024-06-28 04:30:22,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 122 transitions, 1304 flow [2024-06-28 04:30:22,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 122 transitions, 1242 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:22,086 INFO L231 Difference]: Finished difference. Result has 145 places, 110 transitions, 1043 flow [2024-06-28 04:30:22,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=145, PETRI_TRANSITIONS=110} [2024-06-28 04:30:22,087 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 117 predicate places. [2024-06-28 04:30:22,087 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 110 transitions, 1043 flow [2024-06-28 04:30:22,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:22,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:22,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:22,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:30:22,088 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:22,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1630551887, now seen corresponding path program 6 times [2024-06-28 04:30:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598913128] [2024-06-28 04:30:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:22,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:22,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598913128] [2024-06-28 04:30:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598913128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:22,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:22,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802578430] [2024-06-28 04:30:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:22,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:22,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:22,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 110 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:22,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:22,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:22,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:22,843 INFO L124 PetriNetUnfolderBase]: 289/566 cut-off events. [2024-06-28 04:30:22,843 INFO L125 PetriNetUnfolderBase]: For 8646/8646 co-relation queries the response was YES. [2024-06-28 04:30:22,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 566 events. 289/566 cut-off events. For 8646/8646 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2702 event pairs, 70 based on Foata normal form. 2/565 useless extension candidates. Maximal degree in co-relation 2727. Up to 435 conditions per place. [2024-06-28 04:30:22,846 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 85 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2024-06-28 04:30:22,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 123 transitions, 1337 flow [2024-06-28 04:30:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 04:30:22,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 04:30:22,847 INFO L175 Difference]: Start difference. First operand has 145 places, 110 transitions, 1043 flow. Second operand 8 states and 83 transitions. [2024-06-28 04:30:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 123 transitions, 1337 flow [2024-06-28 04:30:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 123 transitions, 1266 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:22,870 INFO L231 Difference]: Finished difference. Result has 147 places, 111 transitions, 1070 flow [2024-06-28 04:30:22,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1070, PETRI_PLACES=147, PETRI_TRANSITIONS=111} [2024-06-28 04:30:22,870 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 04:30:22,870 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 111 transitions, 1070 flow [2024-06-28 04:30:22,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:22,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:22,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:22,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:30:22,871 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:22,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1713672497, now seen corresponding path program 7 times [2024-06-28 04:30:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934204783] [2024-06-28 04:30:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:23,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:23,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934204783] [2024-06-28 04:30:23,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934204783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:23,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:23,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765503417] [2024-06-28 04:30:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:23,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:23,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:23,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 111 transitions, 1070 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:23,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:23,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:23,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:23,613 INFO L124 PetriNetUnfolderBase]: 293/574 cut-off events. [2024-06-28 04:30:23,613 INFO L125 PetriNetUnfolderBase]: For 8243/8243 co-relation queries the response was YES. [2024-06-28 04:30:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821 conditions, 574 events. 293/574 cut-off events. For 8243/8243 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2763 event pairs, 67 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 2751. Up to 399 conditions per place. [2024-06-28 04:30:23,616 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 87 selfloop transitions, 35 changer transitions 0/124 dead transitions. [2024-06-28 04:30:23,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 124 transitions, 1360 flow [2024-06-28 04:30:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 04:30:23,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 04:30:23,617 INFO L175 Difference]: Start difference. First operand has 147 places, 111 transitions, 1070 flow. Second operand 8 states and 84 transitions. [2024-06-28 04:30:23,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 124 transitions, 1360 flow [2024-06-28 04:30:23,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 124 transitions, 1280 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:23,641 INFO L231 Difference]: Finished difference. Result has 149 places, 112 transitions, 1083 flow [2024-06-28 04:30:23,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1083, PETRI_PLACES=149, PETRI_TRANSITIONS=112} [2024-06-28 04:30:23,642 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 04:30:23,642 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 112 transitions, 1083 flow [2024-06-28 04:30:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:23,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:23,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:30:23,642 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:23,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1952771035, now seen corresponding path program 1 times [2024-06-28 04:30:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392194454] [2024-06-28 04:30:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392194454] [2024-06-28 04:30:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392194454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:24,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:24,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376106486] [2024-06-28 04:30:24,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:24,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:24,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:24,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:24,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 112 transitions, 1083 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:24,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:24,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:24,287 INFO L124 PetriNetUnfolderBase]: 341/674 cut-off events. [2024-06-28 04:30:24,288 INFO L125 PetriNetUnfolderBase]: For 17038/17038 co-relation queries the response was YES. [2024-06-28 04:30:24,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 674 events. 341/674 cut-off events. For 17038/17038 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3354 event pairs, 80 based on Foata normal form. 8/677 useless extension candidates. Maximal degree in co-relation 3419. Up to 312 conditions per place. [2024-06-28 04:30:24,291 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 71 selfloop transitions, 53 changer transitions 6/132 dead transitions. [2024-06-28 04:30:24,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 132 transitions, 1491 flow [2024-06-28 04:30:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 04:30:24,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-28 04:30:24,292 INFO L175 Difference]: Start difference. First operand has 149 places, 112 transitions, 1083 flow. Second operand 8 states and 97 transitions. [2024-06-28 04:30:24,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 132 transitions, 1491 flow [2024-06-28 04:30:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 132 transitions, 1410 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:24,331 INFO L231 Difference]: Finished difference. Result has 151 places, 111 transitions, 1110 flow [2024-06-28 04:30:24,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1110, PETRI_PLACES=151, PETRI_TRANSITIONS=111} [2024-06-28 04:30:24,331 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2024-06-28 04:30:24,331 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 111 transitions, 1110 flow [2024-06-28 04:30:24,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:24,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:24,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:24,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:30:24,332 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:24,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1952763595, now seen corresponding path program 2 times [2024-06-28 04:30:24,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:24,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179051193] [2024-06-28 04:30:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:24,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:24,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:24,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179051193] [2024-06-28 04:30:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179051193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147331425] [2024-06-28 04:30:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:24,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:24,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 111 transitions, 1110 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:24,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:24,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:24,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:24,939 INFO L124 PetriNetUnfolderBase]: 331/660 cut-off events. [2024-06-28 04:30:24,939 INFO L125 PetriNetUnfolderBase]: For 16963/16963 co-relation queries the response was YES. [2024-06-28 04:30:24,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 660 events. 331/660 cut-off events. For 16963/16963 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3292 event pairs, 78 based on Foata normal form. 12/667 useless extension candidates. Maximal degree in co-relation 3287. Up to 400 conditions per place. [2024-06-28 04:30:24,943 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 52 changer transitions 7/127 dead transitions. [2024-06-28 04:30:24,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 127 transitions, 1430 flow [2024-06-28 04:30:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 04:30:24,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2024-06-28 04:30:24,943 INFO L175 Difference]: Start difference. First operand has 151 places, 111 transitions, 1110 flow. Second operand 8 states and 94 transitions. [2024-06-28 04:30:24,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 127 transitions, 1430 flow [2024-06-28 04:30:24,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 1322 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:24,977 INFO L231 Difference]: Finished difference. Result has 151 places, 109 transitions, 1105 flow [2024-06-28 04:30:24,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1105, PETRI_PLACES=151, PETRI_TRANSITIONS=109} [2024-06-28 04:30:24,977 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2024-06-28 04:30:24,977 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 109 transitions, 1105 flow [2024-06-28 04:30:24,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:24,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:24,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:24,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:30:24,978 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:24,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1947049303, now seen corresponding path program 8 times [2024-06-28 04:30:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828614867] [2024-06-28 04:30:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828614867] [2024-06-28 04:30:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828614867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:25,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285141872] [2024-06-28 04:30:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:25,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:25,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:25,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 109 transitions, 1105 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:25,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:25,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:25,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:25,660 INFO L124 PetriNetUnfolderBase]: 289/574 cut-off events. [2024-06-28 04:30:25,660 INFO L125 PetriNetUnfolderBase]: For 8377/8377 co-relation queries the response was YES. [2024-06-28 04:30:25,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 574 events. 289/574 cut-off events. For 8377/8377 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2803 event pairs, 68 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 2803. Up to 362 conditions per place. [2024-06-28 04:30:25,664 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 75 selfloop transitions, 44 changer transitions 0/121 dead transitions. [2024-06-28 04:30:25,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 121 transitions, 1393 flow [2024-06-28 04:30:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 04:30:25,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:30:25,665 INFO L175 Difference]: Start difference. First operand has 151 places, 109 transitions, 1105 flow. Second operand 8 states and 87 transitions. [2024-06-28 04:30:25,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 121 transitions, 1393 flow [2024-06-28 04:30:25,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 121 transitions, 1260 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:25,691 INFO L231 Difference]: Finished difference. Result has 152 places, 110 transitions, 1080 flow [2024-06-28 04:30:25,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1080, PETRI_PLACES=152, PETRI_TRANSITIONS=110} [2024-06-28 04:30:25,691 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 04:30:25,692 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 110 transitions, 1080 flow [2024-06-28 04:30:25,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:25,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:25,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:30:25,692 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:25,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1947045583, now seen corresponding path program 9 times [2024-06-28 04:30:25,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:25,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668012564] [2024-06-28 04:30:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:25,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:26,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:26,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668012564] [2024-06-28 04:30:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668012564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:26,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:26,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999896875] [2024-06-28 04:30:26,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:26,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:26,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:26,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:26,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:26,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 110 transitions, 1080 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:26,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:26,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:26,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:26,350 INFO L124 PetriNetUnfolderBase]: 286/569 cut-off events. [2024-06-28 04:30:26,350 INFO L125 PetriNetUnfolderBase]: For 7718/7718 co-relation queries the response was YES. [2024-06-28 04:30:26,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 569 events. 286/569 cut-off events. For 7718/7718 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2774 event pairs, 61 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 2663. Up to 311 conditions per place. [2024-06-28 04:30:26,353 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 72 selfloop transitions, 47 changer transitions 0/121 dead transitions. [2024-06-28 04:30:26,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 121 transitions, 1350 flow [2024-06-28 04:30:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:26,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 04:30:26,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:30:26,354 INFO L175 Difference]: Start difference. First operand has 152 places, 110 transitions, 1080 flow. Second operand 8 states and 88 transitions. [2024-06-28 04:30:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 121 transitions, 1350 flow [2024-06-28 04:30:26,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 121 transitions, 1252 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:26,381 INFO L231 Difference]: Finished difference. Result has 154 places, 110 transitions, 1082 flow [2024-06-28 04:30:26,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1082, PETRI_PLACES=154, PETRI_TRANSITIONS=110} [2024-06-28 04:30:26,381 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-06-28 04:30:26,381 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 110 transitions, 1082 flow [2024-06-28 04:30:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:26,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:26,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:30:26,382 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 125517851, now seen corresponding path program 3 times [2024-06-28 04:30:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310650076] [2024-06-28 04:30:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:26,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310650076] [2024-06-28 04:30:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310650076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:26,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:26,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020366296] [2024-06-28 04:30:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:26,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:26,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 110 transitions, 1082 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:26,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:26,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:26,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:27,086 INFO L124 PetriNetUnfolderBase]: 302/605 cut-off events. [2024-06-28 04:30:27,086 INFO L125 PetriNetUnfolderBase]: For 12467/12467 co-relation queries the response was YES. [2024-06-28 04:30:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 605 events. 302/605 cut-off events. For 12467/12467 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2987 event pairs, 73 based on Foata normal form. 10/610 useless extension candidates. Maximal degree in co-relation 2767. Up to 341 conditions per place. [2024-06-28 04:30:27,089 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 40 changer transitions 10/126 dead transitions. [2024-06-28 04:30:27,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 126 transitions, 1390 flow [2024-06-28 04:30:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 04:30:27,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 04:30:27,090 INFO L175 Difference]: Start difference. First operand has 154 places, 110 transitions, 1082 flow. Second operand 9 states and 103 transitions. [2024-06-28 04:30:27,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 126 transitions, 1390 flow [2024-06-28 04:30:27,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 126 transitions, 1286 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:27,121 INFO L231 Difference]: Finished difference. Result has 157 places, 106 transitions, 1041 flow [2024-06-28 04:30:27,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1041, PETRI_PLACES=157, PETRI_TRANSITIONS=106} [2024-06-28 04:30:27,122 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 129 predicate places. [2024-06-28 04:30:27,122 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 106 transitions, 1041 flow [2024-06-28 04:30:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:27,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:27,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:27,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:30:27,122 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:27,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash 125727101, now seen corresponding path program 4 times [2024-06-28 04:30:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:27,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51356669] [2024-06-28 04:30:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51356669] [2024-06-28 04:30:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51356669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:27,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:27,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481121655] [2024-06-28 04:30:27,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:27,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:27,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:27,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:27,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 106 transitions, 1041 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:27,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:27,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:27,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:27,744 INFO L124 PetriNetUnfolderBase]: 284/579 cut-off events. [2024-06-28 04:30:27,745 INFO L125 PetriNetUnfolderBase]: For 11836/11836 co-relation queries the response was YES. [2024-06-28 04:30:27,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 579 events. 284/579 cut-off events. For 11836/11836 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2869 event pairs, 69 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 2645. Up to 329 conditions per place. [2024-06-28 04:30:27,748 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 72 selfloop transitions, 35 changer transitions 12/121 dead transitions. [2024-06-28 04:30:27,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 121 transitions, 1329 flow [2024-06-28 04:30:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 04:30:27,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40086206896551724 [2024-06-28 04:30:27,748 INFO L175 Difference]: Start difference. First operand has 157 places, 106 transitions, 1041 flow. Second operand 8 states and 93 transitions. [2024-06-28 04:30:27,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 121 transitions, 1329 flow [2024-06-28 04:30:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 121 transitions, 1216 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 04:30:27,776 INFO L231 Difference]: Finished difference. Result has 153 places, 100 transitions, 960 flow [2024-06-28 04:30:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=960, PETRI_PLACES=153, PETRI_TRANSITIONS=100} [2024-06-28 04:30:27,777 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 04:30:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 100 transitions, 960 flow [2024-06-28 04:30:27,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:27,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:27,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:30:27,777 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:27,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 391424381, now seen corresponding path program 5 times [2024-06-28 04:30:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:27,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181716069] [2024-06-28 04:30:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181716069] [2024-06-28 04:30:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181716069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:28,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514015935] [2024-06-28 04:30:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:28,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:28,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:28,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 100 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:28,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:28,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:28,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:28,339 INFO L124 PetriNetUnfolderBase]: 270/553 cut-off events. [2024-06-28 04:30:28,339 INFO L125 PetriNetUnfolderBase]: For 12220/12220 co-relation queries the response was YES. [2024-06-28 04:30:28,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 553 events. 270/553 cut-off events. For 12220/12220 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2668 event pairs, 72 based on Foata normal form. 8/556 useless extension candidates. Maximal degree in co-relation 2522. Up to 179 conditions per place. [2024-06-28 04:30:28,342 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 71 selfloop transitions, 30 changer transitions 12/115 dead transitions. [2024-06-28 04:30:28,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 115 transitions, 1292 flow [2024-06-28 04:30:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 04:30:28,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 04:30:28,343 INFO L175 Difference]: Start difference. First operand has 153 places, 100 transitions, 960 flow. Second operand 8 states and 88 transitions. [2024-06-28 04:30:28,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 115 transitions, 1292 flow [2024-06-28 04:30:28,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 115 transitions, 1140 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 04:30:28,366 INFO L231 Difference]: Finished difference. Result has 146 places, 94 transitions, 844 flow [2024-06-28 04:30:28,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=844, PETRI_PLACES=146, PETRI_TRANSITIONS=94} [2024-06-28 04:30:28,367 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2024-06-28 04:30:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 94 transitions, 844 flow [2024-06-28 04:30:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:28,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:28,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:28,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:30:28,367 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:28,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1281528554, now seen corresponding path program 1 times [2024-06-28 04:30:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302748969] [2024-06-28 04:30:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302748969] [2024-06-28 04:30:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302748969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:28,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:28,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:30:28,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958876304] [2024-06-28 04:30:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:30:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:30:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:30:28,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:29,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 94 transitions, 844 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:29,218 INFO L124 PetriNetUnfolderBase]: 236/479 cut-off events. [2024-06-28 04:30:29,218 INFO L125 PetriNetUnfolderBase]: For 6971/6971 co-relation queries the response was YES. [2024-06-28 04:30:29,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 479 events. 236/479 cut-off events. For 6971/6971 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2219 event pairs, 47 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 1982. Up to 282 conditions per place. [2024-06-28 04:30:29,220 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 66 selfloop transitions, 14 changer transitions 28/110 dead transitions. [2024-06-28 04:30:29,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 110 transitions, 1100 flow [2024-06-28 04:30:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 04:30:29,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 04:30:29,221 INFO L175 Difference]: Start difference. First operand has 146 places, 94 transitions, 844 flow. Second operand 9 states and 90 transitions. [2024-06-28 04:30:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 110 transitions, 1100 flow [2024-06-28 04:30:29,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 110 transitions, 1015 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 04:30:29,235 INFO L231 Difference]: Finished difference. Result has 141 places, 78 transitions, 660 flow [2024-06-28 04:30:29,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=141, PETRI_TRANSITIONS=78} [2024-06-28 04:30:29,236 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 113 predicate places. [2024-06-28 04:30:29,236 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 78 transitions, 660 flow [2024-06-28 04:30:29,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:29,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:29,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:29,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:30:29,236 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:29,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1254594290, now seen corresponding path program 2 times [2024-06-28 04:30:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525632375] [2024-06-28 04:30:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525632375] [2024-06-28 04:30:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525632375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:29,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393616283] [2024-06-28 04:30:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:29,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:29,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:29,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 78 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:29,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:29,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:29,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:29,995 INFO L124 PetriNetUnfolderBase]: 175/360 cut-off events. [2024-06-28 04:30:29,995 INFO L125 PetriNetUnfolderBase]: For 5797/5797 co-relation queries the response was YES. [2024-06-28 04:30:29,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 360 events. 175/360 cut-off events. For 5797/5797 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1490 event pairs, 32 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 1493. Up to 124 conditions per place. [2024-06-28 04:30:29,996 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 20 changer transitions 31/88 dead transitions. [2024-06-28 04:30:29,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 88 transitions, 858 flow [2024-06-28 04:30:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-28 04:30:29,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275862068965517 [2024-06-28 04:30:29,997 INFO L175 Difference]: Start difference. First operand has 141 places, 78 transitions, 660 flow. Second operand 8 states and 76 transitions. [2024-06-28 04:30:29,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 88 transitions, 858 flow [2024-06-28 04:30:30,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 88 transitions, 817 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:30:30,006 INFO L231 Difference]: Finished difference. Result has 125 places, 55 transitions, 495 flow [2024-06-28 04:30:30,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=495, PETRI_PLACES=125, PETRI_TRANSITIONS=55} [2024-06-28 04:30:30,006 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2024-06-28 04:30:30,006 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 55 transitions, 495 flow [2024-06-28 04:30:30,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:30,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:30,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:30,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:30:30,007 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 04:30:30,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1223436104, now seen corresponding path program 3 times [2024-06-28 04:30:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742863787] [2024-06-28 04:30:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:30,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:30,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742863787] [2024-06-28 04:30:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742863787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:30,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:30,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096281170] [2024-06-28 04:30:30,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:30,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:30,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 04:30:30,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 55 transitions, 495 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:30,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:30,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 04:30:30,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:30,732 INFO L124 PetriNetUnfolderBase]: 97/226 cut-off events. [2024-06-28 04:30:30,733 INFO L125 PetriNetUnfolderBase]: For 2639/2639 co-relation queries the response was YES. [2024-06-28 04:30:30,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 226 events. 97/226 cut-off events. For 2639/2639 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 872 event pairs, 13 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 864. Up to 57 conditions per place. [2024-06-28 04:30:30,733 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2024-06-28 04:30:30,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 60 transitions, 569 flow [2024-06-28 04:30:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2024-06-28 04:30:30,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28879310344827586 [2024-06-28 04:30:30,734 INFO L175 Difference]: Start difference. First operand has 125 places, 55 transitions, 495 flow. Second operand 8 states and 67 transitions. [2024-06-28 04:30:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 60 transitions, 569 flow [2024-06-28 04:30:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 60 transitions, 457 flow, removed 1 selfloop flow, removed 21 redundant places. [2024-06-28 04:30:30,736 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2024-06-28 04:30:30,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2024-06-28 04:30:30,737 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-28 04:30:30,737 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2024-06-28 04:30:30,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:30,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 04:30:30,742 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 04:30:30,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 04:30:30,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 04:30:30,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:30:30,743 INFO L445 BasicCegarLoop]: Path program histogram: [10, 9, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:30,750 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 04:30:30,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 04:30:30,753 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 04:30:30,754 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 04:30:30,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 04:30:30 BasicIcfg [2024-06-28 04:30:30,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 04:30:30,755 INFO L158 Benchmark]: Toolchain (without parser) took 39403.15ms. Allocated memory was 178.3MB in the beginning and 566.2MB in the end (delta: 388.0MB). Free memory was 140.2MB in the beginning and 512.2MB in the end (delta: -372.0MB). Peak memory consumption was 338.3MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,755 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 04:30:30,755 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 04:30:30,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.38ms. Allocated memory is still 178.3MB. Free memory was 139.6MB in the beginning and 107.6MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.21ms. Allocated memory is still 178.3MB. Free memory was 107.6MB in the beginning and 104.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,756 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 178.3MB. Free memory was 104.9MB in the beginning and 101.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,757 INFO L158 Benchmark]: RCFGBuilder took 614.37ms. Allocated memory is still 178.3MB. Free memory was 101.9MB in the beginning and 113.1MB in the end (delta: -11.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,760 INFO L158 Benchmark]: TraceAbstraction took 38223.63ms. Allocated memory was 178.3MB in the beginning and 566.2MB in the end (delta: 388.0MB). Free memory was 113.1MB in the beginning and 512.2MB in the end (delta: -399.1MB). Peak memory consumption was 312.3MB. Max. memory is 16.1GB. [2024-06-28 04:30:30,761 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.38ms. Allocated memory is still 178.3MB. Free memory was 139.6MB in the beginning and 107.6MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.21ms. Allocated memory is still 178.3MB. Free memory was 107.6MB in the beginning and 104.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.33ms. Allocated memory is still 178.3MB. Free memory was 104.9MB in the beginning and 101.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 614.37ms. Allocated memory is still 178.3MB. Free memory was 101.9MB in the beginning and 113.1MB in the end (delta: -11.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 38223.63ms. Allocated memory was 178.3MB in the beginning and 566.2MB in the end (delta: 388.0MB). Free memory was 113.1MB in the beginning and 512.2MB in the end (delta: -399.1MB). Peak memory consumption was 312.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 794]: 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, 46 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: 38.1s, OverallIterations: 56, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2548 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2076 mSDsluCounter, 2105 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1753 mSDsCounter, 501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11905 IncrementalHoareTripleChecker+Invalid, 12406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 501 mSolverCounterUnsat, 352 mSDtfsCounter, 11905 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1128occurred in iteration=35, InterpolantAutomatonStates: 428, 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, 0.3s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 790 NumberOfCodeBlocks, 790 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 28435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 56 InterpolantComputations, 56 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 04:30:30,783 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