./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:39:36,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:39:36,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:39:36,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:39:36,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:39:36,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:39:36,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:39:36,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:39:36,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:39:36,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:39:36,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:39:36,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:39:36,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:39:36,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:39:36,920 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:39:36,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:39:36,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:39:36,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:39:36,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:39:36,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:39:36,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:39:36,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:39:36,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:36,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:39:36,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:39:36,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:39:36,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:39:36,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:39:37,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:39:37,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:39:37,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:39:37,132 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:39:37,132 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:39:37,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:39:37,260 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:39:37,260 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:39:37,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:39:38,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:39:38,432 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:39:38,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:39:38,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e085794b/188bb67d65b045f194a46fe1e3c84953/FLAG844a5dc9b [2024-06-28 03:39:38,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e085794b/188bb67d65b045f194a46fe1e3c84953 [2024-06-28 03:39:38,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:39:38,469 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:39:38,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:38,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:39:38,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:39:38,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:37" (1/2) ... [2024-06-28 03:39:38,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3398c8e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:38, skipping insertion in model container [2024-06-28 03:39:38,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:37" (1/2) ... [2024-06-28 03:39:38,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12af26ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:38, skipping insertion in model container [2024-06-28 03:39:38,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:38" (2/2) ... [2024-06-28 03:39:38,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3398c8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:38, skipping insertion in model container [2024-06-28 03:39:38,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:38" (2/2) ... [2024-06-28 03:39:38,477 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:39:38,522 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:39:38,523 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$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) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-28 03:39:38,524 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] (((((((((((((((! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) [2024-06-28 03:39:38,524 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:39:38,524 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 03:39:38,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:39:38,920 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:38,927 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:39:39,023 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:39,051 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:39:39,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39 WrapperNode [2024-06-28 03:39:39,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:39,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:39,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:39:39,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:39:39,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,103 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 120 [2024-06-28 03:39:39,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:39,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:39:39,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:39:39,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:39:39,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,131 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 03:39:39,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:39:39,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:39:39,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:39:39,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:39:39,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (1/1) ... [2024-06-28 03:39:39,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:39,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:39:39,203 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 03:39:39,210 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 03:39:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:39:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:39:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:39:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:39:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:39:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:39:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:39:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:39:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:39:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:39:39,237 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 03:39:39,353 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:39:39,355 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:39:39,572 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:39:39,572 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:39:39,690 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:39:39,691 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:39:39,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:39 BoogieIcfgContainer [2024-06-28 03:39:39,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:39:39,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:39:39,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:39:39,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:39:39,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:37" (1/4) ... [2024-06-28 03:39:39,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52259be6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:39:39, skipping insertion in model container [2024-06-28 03:39:39,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:39:38" (2/4) ... [2024-06-28 03:39:39,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52259be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:39, skipping insertion in model container [2024-06-28 03:39:39,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:39" (3/4) ... [2024-06-28 03:39:39,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52259be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:39, skipping insertion in model container [2024-06-28 03:39:39,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:39" (4/4) ... [2024-06-28 03:39:39,713 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:39:39,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:39:39,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:39:39,727 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:39:39,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:39:39,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:39:39,811 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 03:39:39,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:39:39,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:39:39,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 03:39:39,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:39:39,848 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;@281ce118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:39:39,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:39:39,852 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:39:39,852 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:39:39,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:39,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:39:39,853 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 03:39:39,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 325199742, now seen corresponding path program 1 times [2024-06-28 03:39:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027261004] [2024-06-28 03:39:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027261004] [2024-06-28 03:39:40,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027261004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:39:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15777097] [2024-06-28 03:39:40,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:39:40,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:39:40,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:39:40,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-28 03:39:40,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 03:39:40,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-28 03:39:40,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:40,938 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-28 03:39:40,938 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 03:39:40,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-28 03:39:40,942 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 03:39:40,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-28 03:39:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:39:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:39:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-28 03:39:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-28 03:39:40,952 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-28 03:39:40,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-28 03:39:40,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:40,956 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 03:39:40,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 03:39:40,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 03:39:40,960 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 03:39:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 03:39:40,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:40,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:40,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:39:40,961 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 03:39:40,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1015624547, now seen corresponding path program 1 times [2024-06-28 03:39:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:40,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919014646] [2024-06-28 03:39:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:41,474 INFO 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 03:39:41,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919014646] [2024-06-28 03:39:41,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919014646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:41,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:41,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:39:41,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258619137] [2024-06-28 03:39:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:41,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:39:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:39:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:39:41,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 03:39:41,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 03:39:41,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:41,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 03:39:41,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,667 INFO L124 PetriNetUnfolderBase]: 169/317 cut-off events. [2024-06-28 03:39:41,668 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-28 03:39:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 317 events. 169/317 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1198 event pairs, 70 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 710. Up to 281 conditions per place. [2024-06-28 03:39:41,673 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 03:39:41,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 165 flow [2024-06-28 03:39:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:39:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:39:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-28 03:39:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-28 03:39:41,676 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 74 transitions. [2024-06-28 03:39:41,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 165 flow [2024-06-28 03:39:41,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:39:41,680 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 03:39:41,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 03:39:41,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 03:39:41,681 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 03:39:41,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 03:39:41,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:41,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:39:41,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:41,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash 843623674, now seen corresponding path program 1 times [2024-06-28 03:39:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250060281] [2024-06-28 03:39:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:42,234 INFO 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 03:39:42,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:42,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250060281] [2024-06-28 03:39:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250060281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173867924] [2024-06-28 03:39:42,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:42,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:42,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 03:39:42,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:42,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 03:39:42,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:42,426 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-28 03:39:42,426 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-28 03:39:42,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 252 events. 123/252 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 977 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-28 03:39:42,428 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 22 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-28 03:39:42,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 182 flow [2024-06-28 03:39:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:42,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:39:42,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 03:39:42,432 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:39:42,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 182 flow [2024-06-28 03:39:42,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:42,435 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 132 flow [2024-06-28 03:39:42,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-28 03:39:42,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-28 03:39:42,436 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 132 flow [2024-06-28 03:39:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:42,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:39:42,437 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 03:39:42,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1577241307, now seen corresponding path program 1 times [2024-06-28 03:39:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:42,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644196424] [2024-06-28 03:39:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:43,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644196424] [2024-06-28 03:39:43,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644196424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:43,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275609605] [2024-06-28 03:39:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:43,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 03:39:43,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:43,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 03:39:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:43,533 INFO L124 PetriNetUnfolderBase]: 163/306 cut-off events. [2024-06-28 03:39:43,533 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-06-28 03:39:43,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 306 events. 163/306 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 29 based on Foata normal form. 4/309 useless extension candidates. Maximal degree in co-relation 829. Up to 252 conditions per place. [2024-06-28 03:39:43,535 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-28 03:39:43,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 250 flow [2024-06-28 03:39:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:39:43,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 03:39:43,538 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 132 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:39:43,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 250 flow [2024-06-28 03:39:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 237 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:43,541 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 147 flow [2024-06-28 03:39:43,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-28 03:39:43,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-28 03:39:43,542 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 147 flow [2024-06-28 03:39:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:43,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:39:43,543 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 03:39:43,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash 410236581, now seen corresponding path program 1 times [2024-06-28 03:39:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113283659] [2024-06-28 03:39:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:44,070 INFO 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 03:39:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113283659] [2024-06-28 03:39:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113283659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523548792] [2024-06-28 03:39:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:44,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:44,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:44,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:44,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,257 INFO L124 PetriNetUnfolderBase]: 179/337 cut-off events. [2024-06-28 03:39:44,258 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2024-06-28 03:39:44,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 337 events. 179/337 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1339 event pairs, 48 based on Foata normal form. 3/338 useless extension candidates. Maximal degree in co-relation 984. Up to 269 conditions per place. [2024-06-28 03:39:44,259 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 32 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2024-06-28 03:39:44,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 291 flow [2024-06-28 03:39:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-28 03:39:44,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 03:39:44,261 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 147 flow. Second operand 6 states and 87 transitions. [2024-06-28 03:39:44,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 291 flow [2024-06-28 03:39:44,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 273 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:44,263 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 197 flow [2024-06-28 03:39:44,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-28 03:39:44,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-28 03:39:44,264 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 197 flow [2024-06-28 03:39:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:39:44,264 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 03:39:44,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash -345838341, now seen corresponding path program 1 times [2024-06-28 03:39:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052521096] [2024-06-28 03:39:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:44,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052521096] [2024-06-28 03:39:44,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052521096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:44,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:44,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705792087] [2024-06-28 03:39:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:44,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:44,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:44,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:44,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:44,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,952 INFO L124 PetriNetUnfolderBase]: 189/360 cut-off events. [2024-06-28 03:39:44,952 INFO L125 PetriNetUnfolderBase]: For 813/813 co-relation queries the response was YES. [2024-06-28 03:39:44,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 360 events. 189/360 cut-off events. For 813/813 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1475 event pairs, 53 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 1202. Up to 315 conditions per place. [2024-06-28 03:39:44,955 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-28 03:39:44,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 354 flow [2024-06-28 03:39:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-28 03:39:44,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-28 03:39:44,956 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 197 flow. Second operand 7 states and 93 transitions. [2024-06-28 03:39:44,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 354 flow [2024-06-28 03:39:44,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 339 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:44,959 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 264 flow [2024-06-28 03:39:44,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:39:44,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-28 03:39:44,959 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 264 flow [2024-06-28 03:39:44,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:39:44,960 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 03:39:44,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -261002847, now seen corresponding path program 2 times [2024-06-28 03:39:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279120202] [2024-06-28 03:39:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,483 INFO 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 03:39:45,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279120202] [2024-06-28 03:39:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279120202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875329507] [2024-06-28 03:39:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:45,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:45,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:45,692 INFO L124 PetriNetUnfolderBase]: 191/367 cut-off events. [2024-06-28 03:39:45,692 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-06-28 03:39:45,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 367 events. 191/367 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1524 event pairs, 54 based on Foata normal form. 4/368 useless extension candidates. Maximal degree in co-relation 1296. Up to 273 conditions per place. [2024-06-28 03:39:45,694 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 32 selfloop transitions, 19 changer transitions 0/55 dead transitions. [2024-06-28 03:39:45,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 419 flow [2024-06-28 03:39:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 03:39:45,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-28 03:39:45,695 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 264 flow. Second operand 7 states and 97 transitions. [2024-06-28 03:39:45,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 419 flow [2024-06-28 03:39:45,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 403 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:45,698 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 314 flow [2024-06-28 03:39:45,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-28 03:39:45,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-28 03:39:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 314 flow [2024-06-28 03:39:45,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:39:45,699 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 03:39:45,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1569247621, now seen corresponding path program 3 times [2024-06-28 03:39:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625362559] [2024-06-28 03:39:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:46,123 INFO 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 03:39:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625362559] [2024-06-28 03:39:46,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625362559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:46,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33152050] [2024-06-28 03:39:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:46,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:46,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:46,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:46,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,300 INFO L124 PetriNetUnfolderBase]: 185/361 cut-off events. [2024-06-28 03:39:46,301 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-06-28 03:39:46,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 361 events. 185/361 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1490 event pairs, 66 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1312. Up to 309 conditions per place. [2024-06-28 03:39:46,303 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2024-06-28 03:39:46,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 448 flow [2024-06-28 03:39:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-28 03:39:46,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:39:46,304 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 314 flow. Second operand 7 states and 96 transitions. [2024-06-28 03:39:46,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 448 flow [2024-06-28 03:39:46,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 415 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:46,306 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 312 flow [2024-06-28 03:39:46,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-06-28 03:39:46,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-28 03:39:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 312 flow [2024-06-28 03:39:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:46,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:46,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:39:46,308 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 03:39:46,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -167567013, now seen corresponding path program 1 times [2024-06-28 03:39:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:46,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436413927] [2024-06-28 03:39:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:46,810 INFO 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 03:39:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436413927] [2024-06-28 03:39:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436413927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:46,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190812092] [2024-06-28 03:39:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:46,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:46,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 312 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:46,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:46,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,982 INFO L124 PetriNetUnfolderBase]: 194/374 cut-off events. [2024-06-28 03:39:46,982 INFO L125 PetriNetUnfolderBase]: For 1647/1647 co-relation queries the response was YES. [2024-06-28 03:39:46,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 374 events. 194/374 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1551 event pairs, 49 based on Foata normal form. 3/374 useless extension candidates. Maximal degree in co-relation 1364. Up to 260 conditions per place. [2024-06-28 03:39:46,985 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 35 selfloop transitions, 23 changer transitions 0/62 dead transitions. [2024-06-28 03:39:46,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 496 flow [2024-06-28 03:39:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 03:39:46,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-06-28 03:39:46,986 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 312 flow. Second operand 7 states and 101 transitions. [2024-06-28 03:39:46,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 496 flow [2024-06-28 03:39:46,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 434 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:46,988 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 332 flow [2024-06-28 03:39:46,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-28 03:39:46,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-28 03:39:46,989 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 332 flow [2024-06-28 03:39:46,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:46,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:46,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:39:46,990 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 03:39:46,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash -899609212, now seen corresponding path program 1 times [2024-06-28 03:39:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:46,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722602496] [2024-06-28 03:39:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722602496] [2024-06-28 03:39:47,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722602496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:47,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159879399] [2024-06-28 03:39:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:47,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:47,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 332 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:47,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:47,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:47,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:47,776 INFO L124 PetriNetUnfolderBase]: 203/393 cut-off events. [2024-06-28 03:39:47,776 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2024-06-28 03:39:47,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 393 events. 203/393 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1672 event pairs, 36 based on Foata normal form. 3/394 useless extension candidates. Maximal degree in co-relation 1498. Up to 249 conditions per place. [2024-06-28 03:39:47,779 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 27 changer transitions 0/69 dead transitions. [2024-06-28 03:39:47,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 544 flow [2024-06-28 03:39:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 03:39:47,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2024-06-28 03:39:47,798 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 332 flow. Second operand 8 states and 115 transitions. [2024-06-28 03:39:47,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 544 flow [2024-06-28 03:39:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 518 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:47,802 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 402 flow [2024-06-28 03:39:47,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=402, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-28 03:39:47,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-28 03:39:47,803 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 402 flow [2024-06-28 03:39:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:47,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:47,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:47,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:39:47,804 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 03:39:47,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1642905766, now seen corresponding path program 1 times [2024-06-28 03:39:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601966768] [2024-06-28 03:39:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:48,473 INFO 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 03:39:48,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601966768] [2024-06-28 03:39:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601966768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:48,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:48,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:48,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009921261] [2024-06-28 03:39:48,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:48,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:48,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:48,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 402 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:48,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:48,759 INFO L124 PetriNetUnfolderBase]: 201/384 cut-off events. [2024-06-28 03:39:48,759 INFO L125 PetriNetUnfolderBase]: For 2181/2181 co-relation queries the response was YES. [2024-06-28 03:39:48,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 384 events. 201/384 cut-off events. For 2181/2181 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1622 event pairs, 53 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1604. Up to 327 conditions per place. [2024-06-28 03:39:48,762 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-28 03:39:48,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 580 flow [2024-06-28 03:39:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 03:39:48,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-28 03:39:48,763 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 402 flow. Second operand 7 states and 97 transitions. [2024-06-28 03:39:48,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 580 flow [2024-06-28 03:39:48,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 546 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:48,767 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 421 flow [2024-06-28 03:39:48,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=421, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-28 03:39:48,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 03:39:48,767 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 421 flow [2024-06-28 03:39:48,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:48,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:48,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:39:48,768 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 03:39:48,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1724285170, now seen corresponding path program 1 times [2024-06-28 03:39:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:48,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292328826] [2024-06-28 03:39:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:49,320 INFO 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 03:39:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292328826] [2024-06-28 03:39:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292328826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:49,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:49,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308285228] [2024-06-28 03:39:49,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:49,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:49,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:49,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:49,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:49,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:49,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:49,568 INFO L124 PetriNetUnfolderBase]: 207/396 cut-off events. [2024-06-28 03:39:49,568 INFO L125 PetriNetUnfolderBase]: For 2705/2705 co-relation queries the response was YES. [2024-06-28 03:39:49,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 396 events. 207/396 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1676 event pairs, 50 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 1694. Up to 278 conditions per place. [2024-06-28 03:39:49,571 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 23 changer transitions 0/71 dead transitions. [2024-06-28 03:39:49,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 619 flow [2024-06-28 03:39:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 03:39:49,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-06-28 03:39:49,572 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 421 flow. Second operand 7 states and 101 transitions. [2024-06-28 03:39:49,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 619 flow [2024-06-28 03:39:49,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 582 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:49,575 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 449 flow [2024-06-28 03:39:49,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-28 03:39:49,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-28 03:39:49,576 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 449 flow [2024-06-28 03:39:49,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:49,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:39:49,577 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 03:39:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1432173016, now seen corresponding path program 2 times [2024-06-28 03:39:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402364070] [2024-06-28 03:39:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:50,226 INFO 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 03:39:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402364070] [2024-06-28 03:39:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402364070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:50,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:50,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:50,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333040354] [2024-06-28 03:39:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:50,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:50,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 449 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:50,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:50,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:50,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:50,497 INFO L124 PetriNetUnfolderBase]: 203/390 cut-off events. [2024-06-28 03:39:50,498 INFO L125 PetriNetUnfolderBase]: For 2918/2918 co-relation queries the response was YES. [2024-06-28 03:39:50,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 390 events. 203/390 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1638 event pairs, 35 based on Foata normal form. 2/390 useless extension candidates. Maximal degree in co-relation 1705. Up to 275 conditions per place. [2024-06-28 03:39:50,500 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 43 selfloop transitions, 25 changer transitions 0/72 dead transitions. [2024-06-28 03:39:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 617 flow [2024-06-28 03:39:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:39:50,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:39:50,501 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 449 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:39:50,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 617 flow [2024-06-28 03:39:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 560 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:50,506 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 447 flow [2024-06-28 03:39:50,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-28 03:39:50,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-28 03:39:50,506 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 447 flow [2024-06-28 03:39:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:50,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:50,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:39:50,507 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 03:39:50,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1432183928, now seen corresponding path program 1 times [2024-06-28 03:39:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608917554] [2024-06-28 03:39:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608917554] [2024-06-28 03:39:51,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608917554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824109981] [2024-06-28 03:39:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:51,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:51,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:51,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:51,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:51,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:51,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:51,697 INFO L124 PetriNetUnfolderBase]: 204/410 cut-off events. [2024-06-28 03:39:51,698 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-06-28 03:39:51,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 410 events. 204/410 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1778 event pairs, 28 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 1749. Up to 291 conditions per place. [2024-06-28 03:39:51,700 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2024-06-28 03:39:51,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 774 flow [2024-06-28 03:39:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-28 03:39:51,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 03:39:51,702 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 447 flow. Second operand 9 states and 123 transitions. [2024-06-28 03:39:51,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 774 flow [2024-06-28 03:39:51,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 701 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:51,706 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 576 flow [2024-06-28 03:39:51,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-06-28 03:39:51,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-28 03:39:51,707 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 576 flow [2024-06-28 03:39:51,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:51,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:51,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:39:51,708 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 03:39:51,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 609529639, now seen corresponding path program 1 times [2024-06-28 03:39:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192498616] [2024-06-28 03:39:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192498616] [2024-06-28 03:39:52,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192498616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193090785] [2024-06-28 03:39:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:52,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:52,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,578 INFO L124 PetriNetUnfolderBase]: 202/399 cut-off events. [2024-06-28 03:39:52,578 INFO L125 PetriNetUnfolderBase]: For 3348/3348 co-relation queries the response was YES. [2024-06-28 03:39:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 399 events. 202/399 cut-off events. For 3348/3348 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1707 event pairs, 31 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1840. Up to 281 conditions per place. [2024-06-28 03:39:52,581 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 54 selfloop transitions, 26 changer transitions 0/84 dead transitions. [2024-06-28 03:39:52,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 775 flow [2024-06-28 03:39:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-28 03:39:52,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 03:39:52,582 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 576 flow. Second operand 6 states and 87 transitions. [2024-06-28 03:39:52,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 775 flow [2024-06-28 03:39:52,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 735 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:52,588 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 626 flow [2024-06-28 03:39:52,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=626, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-06-28 03:39:52,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 03:39:52,589 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 626 flow [2024-06-28 03:39:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:39:52,591 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 03:39:52,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1245531677, now seen corresponding path program 1 times [2024-06-28 03:39:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244104701] [2024-06-28 03:39:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:53,249 INFO 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 03:39:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244104701] [2024-06-28 03:39:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244104701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:53,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755136227] [2024-06-28 03:39:53,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:53,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:53,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:53,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:53,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:39:53,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:53,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:53,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:53,501 INFO L124 PetriNetUnfolderBase]: 208/409 cut-off events. [2024-06-28 03:39:53,502 INFO L125 PetriNetUnfolderBase]: For 3968/3968 co-relation queries the response was YES. [2024-06-28 03:39:53,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 409 events. 208/409 cut-off events. For 3968/3968 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1779 event pairs, 43 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 1946. Up to 252 conditions per place. [2024-06-28 03:39:53,505 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 53 selfloop transitions, 34 changer transitions 0/91 dead transitions. [2024-06-28 03:39:53,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 886 flow [2024-06-28 03:39:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 03:39:53,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 03:39:53,506 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 626 flow. Second operand 9 states and 125 transitions. [2024-06-28 03:39:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 886 flow [2024-06-28 03:39:53,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 844 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:53,516 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 681 flow [2024-06-28 03:39:53,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-06-28 03:39:53,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-28 03:39:53,517 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 681 flow [2024-06-28 03:39:53,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:39:53,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:53,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:39:53,518 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 03:39:53,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1236008477, now seen corresponding path program 2 times [2024-06-28 03:39:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422180735] [2024-06-28 03:39:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:54,233 INFO 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 03:39:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422180735] [2024-06-28 03:39:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422180735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286241671] [2024-06-28 03:39:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:54,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:54,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:54,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 681 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:54,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:54,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,523 INFO L124 PetriNetUnfolderBase]: 214/419 cut-off events. [2024-06-28 03:39:54,523 INFO L125 PetriNetUnfolderBase]: For 4447/4447 co-relation queries the response was YES. [2024-06-28 03:39:54,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 419 events. 214/419 cut-off events. For 4447/4447 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1828 event pairs, 49 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 2056. Up to 258 conditions per place. [2024-06-28 03:39:54,526 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 48 selfloop transitions, 41 changer transitions 0/93 dead transitions. [2024-06-28 03:39:54,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 945 flow [2024-06-28 03:39:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:39:54,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:39:54,528 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 681 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:39:54,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 945 flow [2024-06-28 03:39:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 857 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:54,534 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 710 flow [2024-06-28 03:39:54,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=710, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-06-28 03:39:54,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-28 03:39:54,535 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 710 flow [2024-06-28 03:39:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:54,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:54,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:39:54,535 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 03:39:54,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1447691431, now seen corresponding path program 3 times [2024-06-28 03:39:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171913088] [2024-06-28 03:39:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171913088] [2024-06-28 03:39:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171913088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122622363] [2024-06-28 03:39:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:55,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:55,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 710 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:55,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:55,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:55,513 INFO L124 PetriNetUnfolderBase]: 210/413 cut-off events. [2024-06-28 03:39:55,513 INFO L125 PetriNetUnfolderBase]: For 4568/4568 co-relation queries the response was YES. [2024-06-28 03:39:55,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 413 events. 210/413 cut-off events. For 4568/4568 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1799 event pairs, 46 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 2032. Up to 255 conditions per place. [2024-06-28 03:39:55,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 40 changer transitions 0/93 dead transitions. [2024-06-28 03:39:55,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 916 flow [2024-06-28 03:39:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:39:55,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:39:55,518 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 710 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:39:55,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 916 flow [2024-06-28 03:39:55,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 853 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:55,525 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 733 flow [2024-06-28 03:39:55,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2024-06-28 03:39:55,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 03:39:55,526 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 733 flow [2024-06-28 03:39:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 03:39:55,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:55,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:55,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:39:55,526 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 03:39:55,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1448029765, now seen corresponding path program 1 times [2024-06-28 03:39:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269501300] [2024-06-28 03:39:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,456 INFO 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 03:39:56,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269501300] [2024-06-28 03:39:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269501300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714559981] [2024-06-28 03:39:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:56,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:56,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 733 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:39:56,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:56,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,816 INFO L124 PetriNetUnfolderBase]: 230/457 cut-off events. [2024-06-28 03:39:56,817 INFO L125 PetriNetUnfolderBase]: For 6927/6927 co-relation queries the response was YES. [2024-06-28 03:39:56,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 457 events. 230/457 cut-off events. For 6927/6927 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2047 event pairs, 52 based on Foata normal form. 15/469 useless extension candidates. Maximal degree in co-relation 2154. Up to 236 conditions per place. [2024-06-28 03:39:56,820 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 43 selfloop transitions, 43 changer transitions 10/100 dead transitions. [2024-06-28 03:39:56,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 993 flow [2024-06-28 03:39:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 03:39:56,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 03:39:56,823 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 733 flow. Second operand 10 states and 143 transitions. [2024-06-28 03:39:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 993 flow [2024-06-28 03:39:56,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 875 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:56,832 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 696 flow [2024-06-28 03:39:56,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=696, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-28 03:39:56,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-28 03:39:56,833 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 696 flow [2024-06-28 03:39:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:39:56,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:39:56,833 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 03:39:56,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2082816007, now seen corresponding path program 1 times [2024-06-28 03:39:56,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68567293] [2024-06-28 03:39:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,498 INFO 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 03:39:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68567293] [2024-06-28 03:39:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68567293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751352879] [2024-06-28 03:39:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:57,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:57,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 696 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:57,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:57,805 INFO L124 PetriNetUnfolderBase]: 208/421 cut-off events. [2024-06-28 03:39:57,805 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2024-06-28 03:39:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 421 events. 208/421 cut-off events. For 5403/5403 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1832 event pairs, 32 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 2110. Up to 323 conditions per place. [2024-06-28 03:39:57,808 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 77 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-28 03:39:57,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 922 flow [2024-06-28 03:39:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 03:39:57,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-28 03:39:57,809 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 696 flow. Second operand 8 states and 107 transitions. [2024-06-28 03:39:57,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 922 flow [2024-06-28 03:39:57,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 815 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:39:57,817 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 631 flow [2024-06-28 03:39:57,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=631, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-06-28 03:39:57,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-28 03:39:57,817 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 631 flow [2024-06-28 03:39:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:57,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:57,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:39:57,818 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 03:39:57,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:57,818 INFO L85 PathProgramCache]: Analyzing trace with hash 550905239, now seen corresponding path program 2 times [2024-06-28 03:39:57,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:57,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387062321] [2024-06-28 03:39:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:57,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387062321] [2024-06-28 03:39:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387062321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:58,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:58,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711162582] [2024-06-28 03:39:58,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:58,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:58,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 631 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,873 INFO L124 PetriNetUnfolderBase]: 212/429 cut-off events. [2024-06-28 03:39:58,873 INFO L125 PetriNetUnfolderBase]: For 5791/5791 co-relation queries the response was YES. [2024-06-28 03:39:58,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 429 events. 212/429 cut-off events. For 5791/5791 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1886 event pairs, 34 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 2068. Up to 349 conditions per place. [2024-06-28 03:39:58,878 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 71 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 03:39:58,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 848 flow [2024-06-28 03:39:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 03:39:58,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-28 03:39:58,880 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 631 flow. Second operand 8 states and 105 transitions. [2024-06-28 03:39:58,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 848 flow [2024-06-28 03:39:58,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 795 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:58,890 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 643 flow [2024-06-28 03:39:58,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=643, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2024-06-28 03:39:58,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 03:39:58,891 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 643 flow [2024-06-28 03:39:58,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:58,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:58,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:39:58,891 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 03:39:58,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 269974935, now seen corresponding path program 3 times [2024-06-28 03:39:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430988074] [2024-06-28 03:39:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430988074] [2024-06-28 03:39:59,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430988074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407549568] [2024-06-28 03:39:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:59,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:59,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:59,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:59,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:59,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:59,828 INFO L124 PetriNetUnfolderBase]: 216/435 cut-off events. [2024-06-28 03:39:59,829 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2024-06-28 03:39:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 435 events. 216/435 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1918 event pairs, 34 based on Foata normal form. 2/436 useless extension candidates. Maximal degree in co-relation 2079. Up to 356 conditions per place. [2024-06-28 03:39:59,832 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 78 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-28 03:39:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 875 flow [2024-06-28 03:39:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 03:39:59,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:39:59,833 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 643 flow. Second operand 8 states and 108 transitions. [2024-06-28 03:39:59,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 875 flow [2024-06-28 03:39:59,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 97 transitions, 840 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:59,840 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 656 flow [2024-06-28 03:39:59,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-06-28 03:39:59,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-28 03:39:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 656 flow [2024-06-28 03:39:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:39:59,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:59,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:39:59,842 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 03:39:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash 269979895, now seen corresponding path program 1 times [2024-06-28 03:39:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:59,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787273721] [2024-06-28 03:39:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:00,480 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 03:40:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:00,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787273721] [2024-06-28 03:40:00,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787273721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:00,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197566899] [2024-06-28 03:40:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:00,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:00,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:00,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:00,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:00,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:00,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:00,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:00,750 INFO L124 PetriNetUnfolderBase]: 214/422 cut-off events. [2024-06-28 03:40:00,750 INFO L125 PetriNetUnfolderBase]: For 5663/5663 co-relation queries the response was YES. [2024-06-28 03:40:00,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 422 events. 214/422 cut-off events. For 5663/5663 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1862 event pairs, 44 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 2053. Up to 282 conditions per place. [2024-06-28 03:40:00,753 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 34 changer transitions 0/94 dead transitions. [2024-06-28 03:40:00,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 881 flow [2024-06-28 03:40:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 03:40:00,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-06-28 03:40:00,754 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 656 flow. Second operand 7 states and 101 transitions. [2024-06-28 03:40:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 881 flow [2024-06-28 03:40:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 843 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:00,761 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 720 flow [2024-06-28 03:40:00,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-06-28 03:40:00,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-28 03:40:00,762 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 720 flow [2024-06-28 03:40:00,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:00,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:00,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:00,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:40:00,763 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 03:40:00,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2019566185, now seen corresponding path program 4 times [2024-06-28 03:40:00,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:00,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446247420] [2024-06-28 03:40:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446247420] [2024-06-28 03:40:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446247420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709116037] [2024-06-28 03:40:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:01,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:01,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:01,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:40:01,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:01,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:01,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:01,807 INFO L124 PetriNetUnfolderBase]: 215/427 cut-off events. [2024-06-28 03:40:01,808 INFO L125 PetriNetUnfolderBase]: For 6357/6357 co-relation queries the response was YES. [2024-06-28 03:40:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 427 events. 215/427 cut-off events. For 6357/6357 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1897 event pairs, 40 based on Foata normal form. 4/428 useless extension candidates. Maximal degree in co-relation 2089. Up to 319 conditions per place. [2024-06-28 03:40:01,810 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 23 changer transitions 0/97 dead transitions. [2024-06-28 03:40:01,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 945 flow [2024-06-28 03:40:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 03:40:01,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-28 03:40:01,811 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 720 flow. Second operand 8 states and 109 transitions. [2024-06-28 03:40:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 945 flow [2024-06-28 03:40:01,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 868 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:01,819 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 724 flow [2024-06-28 03:40:01,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-28 03:40:01,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-28 03:40:01,820 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 724 flow [2024-06-28 03:40:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 03:40:01,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:40:01,820 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 03:40:01,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1938881657, now seen corresponding path program 1 times [2024-06-28 03:40:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557047911] [2024-06-28 03:40:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:02,683 INFO 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 03:40:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557047911] [2024-06-28 03:40:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557047911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:02,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:02,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370470236] [2024-06-28 03:40:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:02,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:02,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 724 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:02,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:02,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,977 INFO L124 PetriNetUnfolderBase]: 218/436 cut-off events. [2024-06-28 03:40:02,977 INFO L125 PetriNetUnfolderBase]: For 5615/5615 co-relation queries the response was YES. [2024-06-28 03:40:02,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 436 events. 218/436 cut-off events. For 5615/5615 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1950 event pairs, 37 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2108. Up to 327 conditions per place. [2024-06-28 03:40:02,980 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 29 changer transitions 0/103 dead transitions. [2024-06-28 03:40:02,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 975 flow [2024-06-28 03:40:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:02,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:40:02,981 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 724 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:02,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 975 flow [2024-06-28 03:40:02,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 898 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:02,989 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 733 flow [2024-06-28 03:40:02,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=733, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-06-28 03:40:02,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-28 03:40:02,990 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 733 flow [2024-06-28 03:40:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:40:02,990 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 03:40:02,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1939237847, now seen corresponding path program 2 times [2024-06-28 03:40:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931404888] [2024-06-28 03:40:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,924 INFO 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 03:40:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931404888] [2024-06-28 03:40:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931404888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370237133] [2024-06-28 03:40:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:03,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:04,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:04,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 733 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:04,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:04,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:04,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,335 INFO L124 PetriNetUnfolderBase]: 224/444 cut-off events. [2024-06-28 03:40:04,335 INFO L125 PetriNetUnfolderBase]: For 6177/6177 co-relation queries the response was YES. [2024-06-28 03:40:04,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 444 events. 224/444 cut-off events. For 6177/6177 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1983 event pairs, 40 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2162. Up to 278 conditions per place. [2024-06-28 03:40:04,338 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 55 selfloop transitions, 46 changer transitions 0/105 dead transitions. [2024-06-28 03:40:04,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 989 flow [2024-06-28 03:40:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:40:04,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:40:04,340 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 733 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:40:04,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 989 flow [2024-06-28 03:40:04,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 924 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:04,348 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 808 flow [2024-06-28 03:40:04,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=808, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-06-28 03:40:04,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-28 03:40:04,348 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 808 flow [2024-06-28 03:40:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:04,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:04,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:40:04,349 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 03:40:04,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1928762327, now seen corresponding path program 3 times [2024-06-28 03:40:04,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486200782] [2024-06-28 03:40:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,317 INFO 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 03:40:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486200782] [2024-06-28 03:40:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486200782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686213373] [2024-06-28 03:40:05,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:05,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:05,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 808 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:05,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:05,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,631 INFO L124 PetriNetUnfolderBase]: 227/451 cut-off events. [2024-06-28 03:40:05,632 INFO L125 PetriNetUnfolderBase]: For 6435/6435 co-relation queries the response was YES. [2024-06-28 03:40:05,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 451 events. 227/451 cut-off events. For 6435/6435 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2043 event pairs, 37 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2274. Up to 342 conditions per place. [2024-06-28 03:40:05,635 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 31 changer transitions 0/110 dead transitions. [2024-06-28 03:40:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 1090 flow [2024-06-28 03:40:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:40:05,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:40:05,637 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 808 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:40:05,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 1090 flow [2024-06-28 03:40:05,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 110 transitions, 974 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:05,646 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 814 flow [2024-06-28 03:40:05,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=814, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-06-28 03:40:05,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-28 03:40:05,646 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 814 flow [2024-06-28 03:40:05,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:05,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:40:05,647 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 03:40:05,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1643662457, now seen corresponding path program 4 times [2024-06-28 03:40:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684963585] [2024-06-28 03:40:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,493 INFO 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 03:40:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684963585] [2024-06-28 03:40:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684963585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909692889] [2024-06-28 03:40:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:06,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:06,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 814 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:06,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:06,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,884 INFO L124 PetriNetUnfolderBase]: 225/450 cut-off events. [2024-06-28 03:40:06,884 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2024-06-28 03:40:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2249 conditions, 450 events. 225/450 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2034 event pairs, 37 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2199. Up to 339 conditions per place. [2024-06-28 03:40:06,888 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 30 changer transitions 0/112 dead transitions. [2024-06-28 03:40:06,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 1084 flow [2024-06-28 03:40:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 03:40:06,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-28 03:40:06,890 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 814 flow. Second operand 9 states and 121 transitions. [2024-06-28 03:40:06,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 1084 flow [2024-06-28 03:40:06,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 1027 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:06,900 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 867 flow [2024-06-28 03:40:06,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=867, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-28 03:40:06,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-28 03:40:06,901 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 867 flow [2024-06-28 03:40:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:06,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,902 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 03:40:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:40:06,902 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 03:40:06,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash -333931918, now seen corresponding path program 1 times [2024-06-28 03:40:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64020168] [2024-06-28 03:40:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:07,533 INFO 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 03:40:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64020168] [2024-06-28 03:40:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64020168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:07,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:07,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:07,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457515305] [2024-06-28 03:40:07,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:07,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:07,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 867 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:07,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:07,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:07,791 INFO L124 PetriNetUnfolderBase]: 229/456 cut-off events. [2024-06-28 03:40:07,791 INFO L125 PetriNetUnfolderBase]: For 6998/6998 co-relation queries the response was YES. [2024-06-28 03:40:07,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 456 events. 229/456 cut-off events. For 6998/6998 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2079 event pairs, 21 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 2260. Up to 356 conditions per place. [2024-06-28 03:40:07,795 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 101 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2024-06-28 03:40:07,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 1121 flow [2024-06-28 03:40:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-28 03:40:07,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:40:07,798 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 867 flow. Second operand 7 states and 92 transitions. [2024-06-28 03:40:07,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 1121 flow [2024-06-28 03:40:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 1025 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:07,811 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 805 flow [2024-06-28 03:40:07,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2024-06-28 03:40:07,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-28 03:40:07,812 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 805 flow [2024-06-28 03:40:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:07,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:07,812 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 03:40:07,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:40:07,813 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 03:40:07,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2053722672, now seen corresponding path program 2 times [2024-06-28 03:40:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:07,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625949750] [2024-06-28 03:40:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:08,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625949750] [2024-06-28 03:40:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625949750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128602437] [2024-06-28 03:40:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:08,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:08,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:08,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 805 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:08,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:08,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:08,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,841 INFO L124 PetriNetUnfolderBase]: 233/462 cut-off events. [2024-06-28 03:40:08,841 INFO L125 PetriNetUnfolderBase]: For 7304/7304 co-relation queries the response was YES. [2024-06-28 03:40:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 462 events. 233/462 cut-off events. For 7304/7304 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2100 event pairs, 38 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2239. Up to 293 conditions per place. [2024-06-28 03:40:08,844 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 88 selfloop transitions, 24 changer transitions 0/116 dead transitions. [2024-06-28 03:40:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 1115 flow [2024-06-28 03:40:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 03:40:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:08,847 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 805 flow. Second operand 7 states and 98 transitions. [2024-06-28 03:40:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 1115 flow [2024-06-28 03:40:08,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 1091 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:08,857 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 845 flow [2024-06-28 03:40:08,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-28 03:40:08,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-28 03:40:08,858 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 845 flow [2024-06-28 03:40:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:08,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:08,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:08,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:40:08,858 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 03:40:08,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1386085840, now seen corresponding path program 3 times [2024-06-28 03:40:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459384064] [2024-06-28 03:40:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,526 INFO 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 03:40:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459384064] [2024-06-28 03:40:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459384064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117012265] [2024-06-28 03:40:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:09,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:09,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 845 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:09,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,774 INFO L124 PetriNetUnfolderBase]: 247/489 cut-off events. [2024-06-28 03:40:09,774 INFO L125 PetriNetUnfolderBase]: For 8161/8161 co-relation queries the response was YES. [2024-06-28 03:40:09,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 489 events. 247/489 cut-off events. For 8161/8161 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2271 event pairs, 36 based on Foata normal form. 2/487 useless extension candidates. Maximal degree in co-relation 2410. Up to 409 conditions per place. [2024-06-28 03:40:09,780 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-28 03:40:09,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 1183 flow [2024-06-28 03:40:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 03:40:09,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 03:40:09,781 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 845 flow. Second operand 9 states and 116 transitions. [2024-06-28 03:40:09,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 1183 flow [2024-06-28 03:40:09,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 124 transitions, 1127 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:09,793 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 932 flow [2024-06-28 03:40:09,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2024-06-28 03:40:09,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-28 03:40:09,794 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 932 flow [2024-06-28 03:40:09,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:09,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,794 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 03:40:09,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:40:09,795 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 03:40:09,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -126457606, now seen corresponding path program 4 times [2024-06-28 03:40:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136085708] [2024-06-28 03:40:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136085708] [2024-06-28 03:40:10,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136085708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221346497] [2024-06-28 03:40:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:10,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:10,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:10,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,949 INFO L124 PetriNetUnfolderBase]: 254/505 cut-off events. [2024-06-28 03:40:10,949 INFO L125 PetriNetUnfolderBase]: For 8536/8536 co-relation queries the response was YES. [2024-06-28 03:40:10,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 505 events. 254/505 cut-off events. For 8536/8536 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2372 event pairs, 39 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2489. Up to 395 conditions per place. [2024-06-28 03:40:10,953 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 97 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-28 03:40:10,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1225 flow [2024-06-28 03:40:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 03:40:10,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 03:40:10,954 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 932 flow. Second operand 8 states and 106 transitions. [2024-06-28 03:40:10,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1225 flow [2024-06-28 03:40:10,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1196 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 03:40:10,967 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 990 flow [2024-06-28 03:40:10,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=990, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-28 03:40:10,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-28 03:40:10,967 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 990 flow [2024-06-28 03:40:10,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:10,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,967 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 03:40:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:40:10,968 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 03:40:10,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -554350970, now seen corresponding path program 5 times [2024-06-28 03:40:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037344237] [2024-06-28 03:40:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,654 INFO 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 03:40:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037344237] [2024-06-28 03:40:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037344237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292318284] [2024-06-28 03:40:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:11,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:11,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 990 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:11,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:11,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,949 INFO L124 PetriNetUnfolderBase]: 258/513 cut-off events. [2024-06-28 03:40:11,949 INFO L125 PetriNetUnfolderBase]: For 9410/9410 co-relation queries the response was YES. [2024-06-28 03:40:11,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 513 events. 258/513 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2411 event pairs, 41 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2565. Up to 403 conditions per place. [2024-06-28 03:40:11,952 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 95 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2024-06-28 03:40:11,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 127 transitions, 1267 flow [2024-06-28 03:40:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 03:40:11,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:40:11,953 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 990 flow. Second operand 8 states and 108 transitions. [2024-06-28 03:40:11,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 127 transitions, 1267 flow [2024-06-28 03:40:11,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 1217 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:11,967 INFO L231 Difference]: Finished difference. Result has 133 places, 119 transitions, 1015 flow [2024-06-28 03:40:11,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1015, PETRI_PLACES=133, PETRI_TRANSITIONS=119} [2024-06-28 03:40:11,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-28 03:40:11,968 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 119 transitions, 1015 flow [2024-06-28 03:40:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:11,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:11,968 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 03:40:11,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:40:11,969 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 03:40:11,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash 231507192, now seen corresponding path program 1 times [2024-06-28 03:40:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:11,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080293399] [2024-06-28 03:40:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:11,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,646 INFO 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 03:40:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080293399] [2024-06-28 03:40:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080293399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071938707] [2024-06-28 03:40:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:12,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 119 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:12,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:12,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:12,911 INFO L124 PetriNetUnfolderBase]: 256/508 cut-off events. [2024-06-28 03:40:12,911 INFO L125 PetriNetUnfolderBase]: For 9062/9062 co-relation queries the response was YES. [2024-06-28 03:40:12,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 508 events. 256/508 cut-off events. For 9062/9062 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2387 event pairs, 39 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 2537. Up to 317 conditions per place. [2024-06-28 03:40:12,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 54 changer transitions 0/128 dead transitions. [2024-06-28 03:40:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 128 transitions, 1303 flow [2024-06-28 03:40:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 03:40:12,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-28 03:40:12,915 INFO L175 Difference]: Start difference. First operand has 133 places, 119 transitions, 1015 flow. Second operand 8 states and 114 transitions. [2024-06-28 03:40:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 128 transitions, 1303 flow [2024-06-28 03:40:12,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1217 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:12,929 INFO L231 Difference]: Finished difference. Result has 134 places, 121 transitions, 1073 flow [2024-06-28 03:40:12,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=134, PETRI_TRANSITIONS=121} [2024-06-28 03:40:12,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-28 03:40:12,930 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 121 transitions, 1073 flow [2024-06-28 03:40:12,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:12,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,930 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 03:40:12,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:40:12,930 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 03:40:12,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash -586070428, now seen corresponding path program 1 times [2024-06-28 03:40:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409785347] [2024-06-28 03:40:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:13,821 INFO 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 03:40:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409785347] [2024-06-28 03:40:13,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409785347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:13,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:13,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:13,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435841411] [2024-06-28 03:40:13,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:13,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:13,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:13,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 121 transitions, 1073 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:13,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:13,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:13,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:14,183 INFO L124 PetriNetUnfolderBase]: 279/559 cut-off events. [2024-06-28 03:40:14,184 INFO L125 PetriNetUnfolderBase]: For 15377/15377 co-relation queries the response was YES. [2024-06-28 03:40:14,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 559 events. 279/559 cut-off events. For 15377/15377 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2690 event pairs, 46 based on Foata normal form. 13/569 useless extension candidates. Maximal degree in co-relation 2805. Up to 346 conditions per place. [2024-06-28 03:40:14,186 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 36 changer transitions 10/138 dead transitions. [2024-06-28 03:40:14,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 1447 flow [2024-06-28 03:40:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 03:40:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 03:40:14,188 INFO L175 Difference]: Start difference. First operand has 134 places, 121 transitions, 1073 flow. Second operand 10 states and 142 transitions. [2024-06-28 03:40:14,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 1447 flow [2024-06-28 03:40:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1324 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:14,203 INFO L231 Difference]: Finished difference. Result has 138 places, 118 transitions, 1022 flow [2024-06-28 03:40:14,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1022, PETRI_PLACES=138, PETRI_TRANSITIONS=118} [2024-06-28 03:40:14,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-28 03:40:14,204 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 118 transitions, 1022 flow [2024-06-28 03:40:14,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:14,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:14,204 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 03:40:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:40:14,204 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 03:40:14,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -24209820, now seen corresponding path program 2 times [2024-06-28 03:40:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648803856] [2024-06-28 03:40:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648803856] [2024-06-28 03:40:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648803856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:15,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058379758] [2024-06-28 03:40:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:15,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:15,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:15,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 118 transitions, 1022 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:15,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:15,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,637 INFO L124 PetriNetUnfolderBase]: 273/553 cut-off events. [2024-06-28 03:40:15,637 INFO L125 PetriNetUnfolderBase]: For 15664/15664 co-relation queries the response was YES. [2024-06-28 03:40:15,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 553 events. 273/553 cut-off events. For 15664/15664 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2677 event pairs, 44 based on Foata normal form. 12/562 useless extension candidates. Maximal degree in co-relation 2770. Up to 345 conditions per place. [2024-06-28 03:40:15,641 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 39 changer transitions 9/135 dead transitions. [2024-06-28 03:40:15,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 135 transitions, 1372 flow [2024-06-28 03:40:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:40:15,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:40:15,642 INFO L175 Difference]: Start difference. First operand has 138 places, 118 transitions, 1022 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:40:15,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 135 transitions, 1372 flow [2024-06-28 03:40:15,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1287 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:15,659 INFO L231 Difference]: Finished difference. Result has 140 places, 115 transitions, 1015 flow [2024-06-28 03:40:15,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1015, PETRI_PLACES=140, PETRI_TRANSITIONS=115} [2024-06-28 03:40:15,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-28 03:40:15,660 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 115 transitions, 1015 flow [2024-06-28 03:40:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:15,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,660 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 03:40:15,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:40:15,660 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 03:40:15,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash -13167930, now seen corresponding path program 3 times [2024-06-28 03:40:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282819756] [2024-06-28 03:40:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,656 INFO 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 03:40:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282819756] [2024-06-28 03:40:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282819756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028399803] [2024-06-28 03:40:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:16,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:16,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 115 transitions, 1015 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:16,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:16,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:17,098 INFO L124 PetriNetUnfolderBase]: 253/511 cut-off events. [2024-06-28 03:40:17,098 INFO L125 PetriNetUnfolderBase]: For 11298/11298 co-relation queries the response was YES. [2024-06-28 03:40:17,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 511 events. 253/511 cut-off events. For 11298/11298 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2443 event pairs, 40 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2639. Up to 338 conditions per place. [2024-06-28 03:40:17,101 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 79 selfloop transitions, 45 changer transitions 0/128 dead transitions. [2024-06-28 03:40:17,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 128 transitions, 1305 flow [2024-06-28 03:40:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:40:17,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:17,102 INFO L175 Difference]: Start difference. First operand has 140 places, 115 transitions, 1015 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:40:17,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 128 transitions, 1305 flow [2024-06-28 03:40:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 128 transitions, 1210 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:17,118 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 1034 flow [2024-06-28 03:40:17,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1034, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-06-28 03:40:17,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-28 03:40:17,119 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 1034 flow [2024-06-28 03:40:17,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:17,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:17,119 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 03:40:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:40:17,119 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 03:40:17,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1588125028, now seen corresponding path program 4 times [2024-06-28 03:40:17,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:17,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093615621] [2024-06-28 03:40:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:18,086 INFO 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 03:40:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093615621] [2024-06-28 03:40:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093615621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531619557] [2024-06-28 03:40:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:18,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:18,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 1034 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:18,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:18,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,534 INFO L124 PetriNetUnfolderBase]: 276/564 cut-off events. [2024-06-28 03:40:18,534 INFO L125 PetriNetUnfolderBase]: For 18128/18128 co-relation queries the response was YES. [2024-06-28 03:40:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 564 events. 276/564 cut-off events. For 18128/18128 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2775 event pairs, 46 based on Foata normal form. 13/574 useless extension candidates. Maximal degree in co-relation 2894. Up to 357 conditions per place. [2024-06-28 03:40:18,538 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 83 selfloop transitions, 37 changer transitions 10/134 dead transitions. [2024-06-28 03:40:18,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 134 transitions, 1416 flow [2024-06-28 03:40:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 03:40:18,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:40:18,539 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 1034 flow. Second operand 11 states and 155 transitions. [2024-06-28 03:40:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 134 transitions, 1416 flow [2024-06-28 03:40:18,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1312 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:18,558 INFO L231 Difference]: Finished difference. Result has 143 places, 113 transitions, 1010 flow [2024-06-28 03:40:18,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1010, PETRI_PLACES=143, PETRI_TRANSITIONS=113} [2024-06-28 03:40:18,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 03:40:18,559 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 113 transitions, 1010 flow [2024-06-28 03:40:18,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:18,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:18,559 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 03:40:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:40:18,560 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 03:40:18,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1913252098, now seen corresponding path program 5 times [2024-06-28 03:40:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881102099] [2024-06-28 03:40:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:19,460 INFO 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 03:40:19,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881102099] [2024-06-28 03:40:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881102099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:19,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:19,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081100430] [2024-06-28 03:40:19,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:19,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:19,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:19,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 113 transitions, 1010 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:19,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:19,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:19,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:19,836 INFO L124 PetriNetUnfolderBase]: 247/507 cut-off events. [2024-06-28 03:40:19,836 INFO L125 PetriNetUnfolderBase]: For 11269/11269 co-relation queries the response was YES. [2024-06-28 03:40:19,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 507 events. 247/507 cut-off events. For 11269/11269 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2432 event pairs, 39 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 2567. Up to 354 conditions per place. [2024-06-28 03:40:19,839 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 38 changer transitions 0/126 dead transitions. [2024-06-28 03:40:19,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 126 transitions, 1282 flow [2024-06-28 03:40:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:40:19,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:40:19,840 INFO L175 Difference]: Start difference. First operand has 143 places, 113 transitions, 1010 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:40:19,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 126 transitions, 1282 flow [2024-06-28 03:40:19,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 126 transitions, 1172 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:19,859 INFO L231 Difference]: Finished difference. Result has 143 places, 113 transitions, 980 flow [2024-06-28 03:40:19,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=980, PETRI_PLACES=143, PETRI_TRANSITIONS=113} [2024-06-28 03:40:19,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 03:40:19,860 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 113 transitions, 980 flow [2024-06-28 03:40:19,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:19,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:19,860 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 03:40:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:40:19,861 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 03:40:19,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1756054300, now seen corresponding path program 6 times [2024-06-28 03:40:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963660076] [2024-06-28 03:40:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:20,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:20,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963660076] [2024-06-28 03:40:20,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963660076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:20,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:20,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861114020] [2024-06-28 03:40:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:20,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 113 transitions, 980 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:20,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:20,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:20,842 INFO L124 PetriNetUnfolderBase]: 244/500 cut-off events. [2024-06-28 03:40:20,842 INFO L125 PetriNetUnfolderBase]: For 10455/10455 co-relation queries the response was YES. [2024-06-28 03:40:20,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 500 events. 244/500 cut-off events. For 10455/10455 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2389 event pairs, 39 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2446. Up to 348 conditions per place. [2024-06-28 03:40:20,846 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 76 selfloop transitions, 40 changer transitions 0/120 dead transitions. [2024-06-28 03:40:20,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 120 transitions, 1228 flow [2024-06-28 03:40:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 03:40:20,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:20,857 INFO L175 Difference]: Start difference. First operand has 143 places, 113 transitions, 980 flow. Second operand 7 states and 98 transitions. [2024-06-28 03:40:20,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 120 transitions, 1228 flow [2024-06-28 03:40:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 120 transitions, 1118 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:20,878 INFO L231 Difference]: Finished difference. Result has 139 places, 113 transitions, 960 flow [2024-06-28 03:40:20,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=139, PETRI_TRANSITIONS=113} [2024-06-28 03:40:20,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-28 03:40:20,878 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 113 transitions, 960 flow [2024-06-28 03:40:20,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 03:40:20,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:40:20,879 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 03:40:20,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1622045478, now seen corresponding path program 1 times [2024-06-28 03:40:20,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419772153] [2024-06-28 03:40:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,553 INFO 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 03:40:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419772153] [2024-06-28 03:40:21,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419772153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:21,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124153538] [2024-06-28 03:40:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:21,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:21,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 113 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:21,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:21,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,806 INFO L124 PetriNetUnfolderBase]: 248/508 cut-off events. [2024-06-28 03:40:21,806 INFO L125 PetriNetUnfolderBase]: For 10743/10743 co-relation queries the response was YES. [2024-06-28 03:40:21,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 508 events. 248/508 cut-off events. For 10743/10743 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2445 event pairs, 21 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 2419. Up to 394 conditions per place. [2024-06-28 03:40:21,809 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 107 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2024-06-28 03:40:21,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 125 transitions, 1232 flow [2024-06-28 03:40:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 03:40:21,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-28 03:40:21,810 INFO L175 Difference]: Start difference. First operand has 139 places, 113 transitions, 960 flow. Second operand 8 states and 103 transitions. [2024-06-28 03:40:21,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 125 transitions, 1232 flow [2024-06-28 03:40:21,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 125 transitions, 1121 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:21,828 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 889 flow [2024-06-28 03:40:21,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=889, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-06-28 03:40:21,828 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-28 03:40:21,829 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 889 flow [2024-06-28 03:40:21,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:21,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:21,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:40:21,829 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 03:40:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 763691442, now seen corresponding path program 2 times [2024-06-28 03:40:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118538743] [2024-06-28 03:40:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:22,531 INFO 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 03:40:22,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118538743] [2024-06-28 03:40:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118538743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432095585] [2024-06-28 03:40:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:22,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:22,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:22,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:22,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:22,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:22,877 INFO L124 PetriNetUnfolderBase]: 259/529 cut-off events. [2024-06-28 03:40:22,877 INFO L125 PetriNetUnfolderBase]: For 9811/9811 co-relation queries the response was YES. [2024-06-28 03:40:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 529 events. 259/529 cut-off events. For 9811/9811 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2570 event pairs, 40 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 2417. Up to 314 conditions per place. [2024-06-28 03:40:22,880 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 44 changer transitions 0/126 dead transitions. [2024-06-28 03:40:22,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 126 transitions, 1237 flow [2024-06-28 03:40:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 03:40:22,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44140625 [2024-06-28 03:40:22,881 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 889 flow. Second operand 8 states and 113 transitions. [2024-06-28 03:40:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 126 transitions, 1237 flow [2024-06-28 03:40:22,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 126 transitions, 1207 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:22,897 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 972 flow [2024-06-28 03:40:22,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=972, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-06-28 03:40:22,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-28 03:40:22,898 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 972 flow [2024-06-28 03:40:22,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:22,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:22,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:40:22,900 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 03:40:22,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1503780168, now seen corresponding path program 3 times [2024-06-28 03:40:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534589339] [2024-06-28 03:40:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534589339] [2024-06-28 03:40:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534589339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:23,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201340770] [2024-06-28 03:40:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:23,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:23,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 972 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:23,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:23,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:23,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:23,864 INFO L124 PetriNetUnfolderBase]: 256/524 cut-off events. [2024-06-28 03:40:23,864 INFO L125 PetriNetUnfolderBase]: For 9491/9491 co-relation queries the response was YES. [2024-06-28 03:40:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 524 events. 256/524 cut-off events. For 9491/9491 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2538 event pairs, 41 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 2422. Up to 356 conditions per place. [2024-06-28 03:40:23,867 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 44 changer transitions 0/124 dead transitions. [2024-06-28 03:40:23,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 124 transitions, 1230 flow [2024-06-28 03:40:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:40:23,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:23,868 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 972 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:40:23,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 124 transitions, 1230 flow [2024-06-28 03:40:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 124 transitions, 1163 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:23,885 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 998 flow [2024-06-28 03:40:23,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=998, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2024-06-28 03:40:23,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-28 03:40:23,885 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 998 flow [2024-06-28 03:40:23,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:23,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:23,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:40:23,886 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 03:40:23,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash 759107472, now seen corresponding path program 4 times [2024-06-28 03:40:23,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:23,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832255260] [2024-06-28 03:40:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:24,566 INFO 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 03:40:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832255260] [2024-06-28 03:40:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832255260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192191318] [2024-06-28 03:40:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:24,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:24,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 998 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:24,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:24,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:24,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,829 INFO L124 PetriNetUnfolderBase]: 260/532 cut-off events. [2024-06-28 03:40:24,829 INFO L125 PetriNetUnfolderBase]: For 9959/9959 co-relation queries the response was YES. [2024-06-28 03:40:24,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 532 events. 260/532 cut-off events. For 9959/9959 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2597 event pairs, 39 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 2509. Up to 253 conditions per place. [2024-06-28 03:40:24,832 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 89 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-06-28 03:40:24,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 128 transitions, 1350 flow [2024-06-28 03:40:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 03:40:24,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-28 03:40:24,837 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 998 flow. Second operand 8 states and 111 transitions. [2024-06-28 03:40:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 128 transitions, 1350 flow [2024-06-28 03:40:24,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 128 transitions, 1254 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:24,858 INFO L231 Difference]: Finished difference. Result has 146 places, 117 transitions, 986 flow [2024-06-28 03:40:24,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=146, PETRI_TRANSITIONS=117} [2024-06-28 03:40:24,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-28 03:40:24,859 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 117 transitions, 986 flow [2024-06-28 03:40:24,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:24,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:24,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:40:24,859 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 03:40:24,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2046491574, now seen corresponding path program 1 times [2024-06-28 03:40:24,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244510723] [2024-06-28 03:40:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,954 INFO 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 03:40:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244510723] [2024-06-28 03:40:25,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244510723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212101666] [2024-06-28 03:40:25,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:26,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:26,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 117 transitions, 986 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:26,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:26,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:26,302 INFO L124 PetriNetUnfolderBase]: 263/539 cut-off events. [2024-06-28 03:40:26,303 INFO L125 PetriNetUnfolderBase]: For 10036/10036 co-relation queries the response was YES. [2024-06-28 03:40:26,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 539 events. 263/539 cut-off events. For 10036/10036 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2636 event pairs, 42 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 2558. Up to 387 conditions per place. [2024-06-28 03:40:26,305 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 77 selfloop transitions, 46 changer transitions 0/127 dead transitions. [2024-06-28 03:40:26,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 127 transitions, 1286 flow [2024-06-28 03:40:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:40:26,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:40:26,306 INFO L175 Difference]: Start difference. First operand has 146 places, 117 transitions, 986 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:40:26,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 127 transitions, 1286 flow [2024-06-28 03:40:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 127 transitions, 1227 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:26,327 INFO L231 Difference]: Finished difference. Result has 150 places, 119 transitions, 1068 flow [2024-06-28 03:40:26,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1068, PETRI_PLACES=150, PETRI_TRANSITIONS=119} [2024-06-28 03:40:26,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-28 03:40:26,327 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 119 transitions, 1068 flow [2024-06-28 03:40:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:26,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:26,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:26,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:40:26,329 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 03:40:26,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash 231646582, now seen corresponding path program 2 times [2024-06-28 03:40:26,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:26,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610115616] [2024-06-28 03:40:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:26,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:27,128 INFO 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 03:40:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610115616] [2024-06-28 03:40:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610115616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519789323] [2024-06-28 03:40:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:27,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:27,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 119 transitions, 1068 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:27,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:27,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:27,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:27,366 INFO L124 PetriNetUnfolderBase]: 266/546 cut-off events. [2024-06-28 03:40:27,366 INFO L125 PetriNetUnfolderBase]: For 10594/10594 co-relation queries the response was YES. [2024-06-28 03:40:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 546 events. 266/546 cut-off events. For 10594/10594 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2691 event pairs, 40 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 2671. Up to 352 conditions per place. [2024-06-28 03:40:27,369 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 71 selfloop transitions, 55 changer transitions 0/130 dead transitions. [2024-06-28 03:40:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 130 transitions, 1380 flow [2024-06-28 03:40:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:40:27,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:40:27,370 INFO L175 Difference]: Start difference. First operand has 150 places, 119 transitions, 1068 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:40:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 130 transitions, 1380 flow [2024-06-28 03:40:27,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 1249 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:27,394 INFO L231 Difference]: Finished difference. Result has 153 places, 121 transitions, 1096 flow [2024-06-28 03:40:27,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1096, PETRI_PLACES=153, PETRI_TRANSITIONS=121} [2024-06-28 03:40:27,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-28 03:40:27,395 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 121 transitions, 1096 flow [2024-06-28 03:40:27,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:27,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:27,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:27,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:40:27,395 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 03:40:27,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1978647864, now seen corresponding path program 5 times [2024-06-28 03:40:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042904843] [2024-06-28 03:40:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042904843] [2024-06-28 03:40:28,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042904843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:28,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982846469] [2024-06-28 03:40:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:28,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:28,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 121 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:28,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:28,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:28,614 INFO L124 PetriNetUnfolderBase]: 270/556 cut-off events. [2024-06-28 03:40:28,614 INFO L125 PetriNetUnfolderBase]: For 11450/11450 co-relation queries the response was YES. [2024-06-28 03:40:28,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 556 events. 270/556 cut-off events. For 11450/11450 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2761 event pairs, 43 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 2685. Up to 415 conditions per place. [2024-06-28 03:40:28,617 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2024-06-28 03:40:28,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 132 transitions, 1383 flow [2024-06-28 03:40:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:40:28,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:40:28,618 INFO L175 Difference]: Start difference. First operand has 153 places, 121 transitions, 1096 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:40:28,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 132 transitions, 1383 flow [2024-06-28 03:40:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 132 transitions, 1244 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:28,644 INFO L231 Difference]: Finished difference. Result has 155 places, 122 transitions, 1038 flow [2024-06-28 03:40:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=155, PETRI_TRANSITIONS=122} [2024-06-28 03:40:28,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 03:40:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 122 transitions, 1038 flow [2024-06-28 03:40:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 03:40:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:40:28,645 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 03:40:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1647466338, now seen corresponding path program 6 times [2024-06-28 03:40:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347072262] [2024-06-28 03:40:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:29,373 INFO 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 03:40:29,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347072262] [2024-06-28 03:40:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347072262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:29,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:29,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:29,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467552166] [2024-06-28 03:40:29,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:29,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:29,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:29,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:29,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:29,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 122 transitions, 1038 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:29,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:29,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:29,737 INFO L124 PetriNetUnfolderBase]: 274/564 cut-off events. [2024-06-28 03:40:29,737 INFO L125 PetriNetUnfolderBase]: For 11943/11943 co-relation queries the response was YES. [2024-06-28 03:40:29,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 564 events. 274/564 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2818 event pairs, 35 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 2664. Up to 394 conditions per place. [2024-06-28 03:40:29,740 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-28 03:40:29,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 134 transitions, 1409 flow [2024-06-28 03:40:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 03:40:29,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 03:40:29,741 INFO L175 Difference]: Start difference. First operand has 155 places, 122 transitions, 1038 flow. Second operand 9 states and 124 transitions. [2024-06-28 03:40:29,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 134 transitions, 1409 flow [2024-06-28 03:40:29,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 134 transitions, 1321 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:29,774 INFO L231 Difference]: Finished difference. Result has 155 places, 123 transitions, 1029 flow [2024-06-28 03:40:29,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=155, PETRI_TRANSITIONS=123} [2024-06-28 03:40:29,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 03:40:29,774 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 123 transitions, 1029 flow [2024-06-28 03:40:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:29,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:29,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:40:29,775 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 03:40:29,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1647288708, now seen corresponding path program 7 times [2024-06-28 03:40:29,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:29,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706709330] [2024-06-28 03:40:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:30,501 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 03:40:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706709330] [2024-06-28 03:40:30,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706709330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:30,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:30,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491989687] [2024-06-28 03:40:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:30,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:30,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 123 transitions, 1029 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:30,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:30,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:30,822 INFO L124 PetriNetUnfolderBase]: 279/577 cut-off events. [2024-06-28 03:40:30,822 INFO L125 PetriNetUnfolderBase]: For 12602/12602 co-relation queries the response was YES. [2024-06-28 03:40:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 577 events. 279/577 cut-off events. For 12602/12602 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2905 event pairs, 37 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 2723. Up to 433 conditions per place. [2024-06-28 03:40:30,825 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 30 changer transitions 0/134 dead transitions. [2024-06-28 03:40:30,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 134 transitions, 1332 flow [2024-06-28 03:40:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:40:30,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:30,826 INFO L175 Difference]: Start difference. First operand has 155 places, 123 transitions, 1029 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:40:30,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 134 transitions, 1332 flow [2024-06-28 03:40:30,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 134 transitions, 1230 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:30,853 INFO L231 Difference]: Finished difference. Result has 157 places, 125 transitions, 1016 flow [2024-06-28 03:40:30,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1016, PETRI_PLACES=157, PETRI_TRANSITIONS=125} [2024-06-28 03:40:30,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-28 03:40:30,854 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 125 transitions, 1016 flow [2024-06-28 03:40:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:30,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:30,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:30,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:40:30,854 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 03:40:30,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1419387558, now seen corresponding path program 8 times [2024-06-28 03:40:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855984373] [2024-06-28 03:40:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:31,632 INFO 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 03:40:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855984373] [2024-06-28 03:40:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855984373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358293643] [2024-06-28 03:40:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:31,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:31,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 125 transitions, 1016 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:31,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:31,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:31,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:31,969 INFO L124 PetriNetUnfolderBase]: 276/572 cut-off events. [2024-06-28 03:40:31,969 INFO L125 PetriNetUnfolderBase]: For 11522/11522 co-relation queries the response was YES. [2024-06-28 03:40:31,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 572 events. 276/572 cut-off events. For 11522/11522 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2880 event pairs, 36 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 2550. Up to 428 conditions per place. [2024-06-28 03:40:31,972 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 101 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-28 03:40:31,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 134 transitions, 1296 flow [2024-06-28 03:40:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 03:40:31,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-28 03:40:31,973 INFO L175 Difference]: Start difference. First operand has 157 places, 125 transitions, 1016 flow. Second operand 9 states and 121 transitions. [2024-06-28 03:40:31,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 134 transitions, 1296 flow [2024-06-28 03:40:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 134 transitions, 1230 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:32,001 INFO L231 Difference]: Finished difference. Result has 160 places, 125 transitions, 1012 flow [2024-06-28 03:40:32,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=160, PETRI_TRANSITIONS=125} [2024-06-28 03:40:32,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-28 03:40:32,002 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 125 transitions, 1012 flow [2024-06-28 03:40:32,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:40:32,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:32,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:32,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:40:32,002 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 03:40:32,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1978893818, now seen corresponding path program 3 times [2024-06-28 03:40:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:32,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922461886] [2024-06-28 03:40:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:32,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,872 INFO 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 03:40:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922461886] [2024-06-28 03:40:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922461886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969205077] [2024-06-28 03:40:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:32,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:32,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 125 transitions, 1012 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:32,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:33,219 INFO L124 PetriNetUnfolderBase]: 279/577 cut-off events. [2024-06-28 03:40:33,219 INFO L125 PetriNetUnfolderBase]: For 11229/11229 co-relation queries the response was YES. [2024-06-28 03:40:33,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 577 events. 279/577 cut-off events. For 11229/11229 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2919 event pairs, 41 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 2591. Up to 384 conditions per place. [2024-06-28 03:40:33,222 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 81 selfloop transitions, 52 changer transitions 0/137 dead transitions. [2024-06-28 03:40:33,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 137 transitions, 1340 flow [2024-06-28 03:40:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:40:33,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:40:33,223 INFO L175 Difference]: Start difference. First operand has 160 places, 125 transitions, 1012 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:40:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 137 transitions, 1340 flow [2024-06-28 03:40:33,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 137 transitions, 1234 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:33,252 INFO L231 Difference]: Finished difference. Result has 161 places, 127 transitions, 1059 flow [2024-06-28 03:40:33,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1059, PETRI_PLACES=161, PETRI_TRANSITIONS=127} [2024-06-28 03:40:33,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-28 03:40:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 127 transitions, 1059 flow [2024-06-28 03:40:33,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:40:33,253 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 03:40:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -988324008, now seen corresponding path program 4 times [2024-06-28 03:40:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804681138] [2024-06-28 03:40:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804681138] [2024-06-28 03:40:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804681138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:34,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:34,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996662709] [2024-06-28 03:40:34,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:34,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:34,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 127 transitions, 1059 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:34,287 INFO L124 PetriNetUnfolderBase]: 282/584 cut-off events. [2024-06-28 03:40:34,287 INFO L125 PetriNetUnfolderBase]: For 11986/11986 co-relation queries the response was YES. [2024-06-28 03:40:34,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 584 events. 282/584 cut-off events. For 11986/11986 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2972 event pairs, 41 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 2652. Up to 389 conditions per place. [2024-06-28 03:40:34,290 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2024-06-28 03:40:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 138 transitions, 1391 flow [2024-06-28 03:40:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:40:34,291 INFO L175 Difference]: Start difference. First operand has 161 places, 127 transitions, 1059 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 138 transitions, 1391 flow [2024-06-28 03:40:34,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 138 transitions, 1254 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:34,320 INFO L231 Difference]: Finished difference. Result has 162 places, 129 transitions, 1061 flow [2024-06-28 03:40:34,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1061, PETRI_PLACES=162, PETRI_TRANSITIONS=129} [2024-06-28 03:40:34,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-28 03:40:34,321 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 129 transitions, 1061 flow [2024-06-28 03:40:34,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:34,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:34,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:34,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:40:34,321 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 03:40:34,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -408215754, now seen corresponding path program 5 times [2024-06-28 03:40:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756895765] [2024-06-28 03:40:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:35,230 INFO 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 03:40:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756895765] [2024-06-28 03:40:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756895765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:35,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249480894] [2024-06-28 03:40:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:35,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:35,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:35,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 129 transitions, 1061 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:35,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:35,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:35,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:35,642 INFO L124 PetriNetUnfolderBase]: 285/591 cut-off events. [2024-06-28 03:40:35,642 INFO L125 PetriNetUnfolderBase]: For 12639/12639 co-relation queries the response was YES. [2024-06-28 03:40:35,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 591 events. 285/591 cut-off events. For 12639/12639 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3027 event pairs, 41 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 2687. Up to 375 conditions per place. [2024-06-28 03:40:35,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 79 selfloop transitions, 62 changer transitions 0/145 dead transitions. [2024-06-28 03:40:35,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 145 transitions, 1551 flow [2024-06-28 03:40:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:40:35,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:35,650 INFO L175 Difference]: Start difference. First operand has 162 places, 129 transitions, 1061 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:40:35,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 145 transitions, 1551 flow [2024-06-28 03:40:35,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 145 transitions, 1428 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:35,677 INFO L231 Difference]: Finished difference. Result has 166 places, 133 transitions, 1167 flow [2024-06-28 03:40:35,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1167, PETRI_PLACES=166, PETRI_TRANSITIONS=133} [2024-06-28 03:40:35,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-28 03:40:35,677 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 133 transitions, 1167 flow [2024-06-28 03:40:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:35,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:35,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:40:35,678 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 03:40:35,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash -750802644, now seen corresponding path program 6 times [2024-06-28 03:40:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550544214] [2024-06-28 03:40:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:36,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550544214] [2024-06-28 03:40:36,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550544214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:36,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:36,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:36,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149020716] [2024-06-28 03:40:36,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:36,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:36,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:36,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:36,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 133 transitions, 1167 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:36,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:36,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:36,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:36,990 INFO L124 PetriNetUnfolderBase]: 283/590 cut-off events. [2024-06-28 03:40:36,990 INFO L125 PetriNetUnfolderBase]: For 12054/12054 co-relation queries the response was YES. [2024-06-28 03:40:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 590 events. 283/590 cut-off events. For 12054/12054 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3013 event pairs, 38 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 2650. Up to 391 conditions per place. [2024-06-28 03:40:36,993 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 86 selfloop transitions, 56 changer transitions 0/146 dead transitions. [2024-06-28 03:40:36,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 146 transitions, 1481 flow [2024-06-28 03:40:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 03:40:36,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 03:40:36,994 INFO L175 Difference]: Start difference. First operand has 166 places, 133 transitions, 1167 flow. Second operand 12 states and 159 transitions. [2024-06-28 03:40:36,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 146 transitions, 1481 flow [2024-06-28 03:40:37,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 146 transitions, 1314 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:37,021 INFO L231 Difference]: Finished difference. Result has 169 places, 133 transitions, 1117 flow [2024-06-28 03:40:37,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1117, PETRI_PLACES=169, PETRI_TRANSITIONS=133} [2024-06-28 03:40:37,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-28 03:40:37,021 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 133 transitions, 1117 flow [2024-06-28 03:40:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:37,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:37,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:37,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:40:37,022 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 03:40:37,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1003964073, now seen corresponding path program 1 times [2024-06-28 03:40:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190679856] [2024-06-28 03:40:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190679856] [2024-06-28 03:40:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190679856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981112008] [2024-06-28 03:40:37,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:37,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:37,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:37,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 133 transitions, 1117 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:37,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:37,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:38,076 INFO L124 PetriNetUnfolderBase]: 294/609 cut-off events. [2024-06-28 03:40:38,076 INFO L125 PetriNetUnfolderBase]: For 14835/14835 co-relation queries the response was YES. [2024-06-28 03:40:38,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 609 events. 294/609 cut-off events. For 14835/14835 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3127 event pairs, 42 based on Foata normal form. 2/606 useless extension candidates. Maximal degree in co-relation 2782. Up to 393 conditions per place. [2024-06-28 03:40:38,079 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 50 changer transitions 0/146 dead transitions. [2024-06-28 03:40:38,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 146 transitions, 1527 flow [2024-06-28 03:40:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:40:38,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:40:38,081 INFO L175 Difference]: Start difference. First operand has 169 places, 133 transitions, 1117 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:40:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 146 transitions, 1527 flow [2024-06-28 03:40:38,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 146 transitions, 1394 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:38,115 INFO L231 Difference]: Finished difference. Result has 167 places, 135 transitions, 1102 flow [2024-06-28 03:40:38,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1102, PETRI_PLACES=167, PETRI_TRANSITIONS=135} [2024-06-28 03:40:38,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-28 03:40:38,115 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 135 transitions, 1102 flow [2024-06-28 03:40:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:38,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:38,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:40:38,115 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 03:40:38,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash -343444055, now seen corresponding path program 2 times [2024-06-28 03:40:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219605920] [2024-06-28 03:40:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:38,859 INFO 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 03:40:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219605920] [2024-06-28 03:40:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219605920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631184594] [2024-06-28 03:40:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:38,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:38,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 135 transitions, 1102 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:38,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:38,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:38,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:39,153 INFO L124 PetriNetUnfolderBase]: 315/653 cut-off events. [2024-06-28 03:40:39,153 INFO L125 PetriNetUnfolderBase]: For 15436/15436 co-relation queries the response was YES. [2024-06-28 03:40:39,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 653 events. 315/653 cut-off events. For 15436/15436 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3424 event pairs, 42 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 2905. Up to 529 conditions per place. [2024-06-28 03:40:39,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 20 changer transitions 0/156 dead transitions. [2024-06-28 03:40:39,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 156 transitions, 1472 flow [2024-06-28 03:40:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:40:39,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:40:39,157 INFO L175 Difference]: Start difference. First operand has 167 places, 135 transitions, 1102 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:40:39,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 156 transitions, 1472 flow [2024-06-28 03:40:39,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 156 transitions, 1396 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:39,192 INFO L231 Difference]: Finished difference. Result has 177 places, 140 transitions, 1116 flow [2024-06-28 03:40:39,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1116, PETRI_PLACES=177, PETRI_TRANSITIONS=140} [2024-06-28 03:40:39,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-28 03:40:39,193 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 140 transitions, 1116 flow [2024-06-28 03:40:39,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:39,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:39,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:39,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:40:39,193 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:39,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1007683143, now seen corresponding path program 3 times [2024-06-28 03:40:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:39,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145344607] [2024-06-28 03:40:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:39,922 INFO 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 03:40:39,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:39,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145344607] [2024-06-28 03:40:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145344607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:39,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472477070] [2024-06-28 03:40:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:39,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:40,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:40,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 140 transitions, 1116 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:40,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:40,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:40,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,223 INFO L124 PetriNetUnfolderBase]: 326/673 cut-off events. [2024-06-28 03:40:40,223 INFO L125 PetriNetUnfolderBase]: For 18188/18188 co-relation queries the response was YES. [2024-06-28 03:40:40,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 673 events. 326/673 cut-off events. For 18188/18188 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3525 event pairs, 49 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 3121. Up to 300 conditions per place. [2024-06-28 03:40:40,226 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 112 selfloop transitions, 39 changer transitions 0/155 dead transitions. [2024-06-28 03:40:40,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 155 transitions, 1560 flow [2024-06-28 03:40:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 03:40:40,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 03:40:40,227 INFO L175 Difference]: Start difference. First operand has 177 places, 140 transitions, 1116 flow. Second operand 9 states and 124 transitions. [2024-06-28 03:40:40,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 155 transitions, 1560 flow [2024-06-28 03:40:40,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 155 transitions, 1524 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:40,267 INFO L231 Difference]: Finished difference. Result has 181 places, 142 transitions, 1184 flow [2024-06-28 03:40:40,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1184, PETRI_PLACES=181, PETRI_TRANSITIONS=142} [2024-06-28 03:40:40,268 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-28 03:40:40,268 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 142 transitions, 1184 flow [2024-06-28 03:40:40,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:40,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:40,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:40,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:40:40,268 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:40,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash 264207401, now seen corresponding path program 4 times [2024-06-28 03:40:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:40,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479679172] [2024-06-28 03:40:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,023 INFO 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 03:40:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479679172] [2024-06-28 03:40:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479679172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980598779] [2024-06-28 03:40:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:41,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:41,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 142 transitions, 1184 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:41,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:41,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:41,352 INFO L124 PetriNetUnfolderBase]: 323/668 cut-off events. [2024-06-28 03:40:41,353 INFO L125 PetriNetUnfolderBase]: For 16913/16913 co-relation queries the response was YES. [2024-06-28 03:40:41,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 668 events. 323/668 cut-off events. For 16913/16913 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3495 event pairs, 54 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 3095. Up to 471 conditions per place. [2024-06-28 03:40:41,356 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 50 changer transitions 0/151 dead transitions. [2024-06-28 03:40:41,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 151 transitions, 1498 flow [2024-06-28 03:40:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 03:40:41,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 03:40:41,357 INFO L175 Difference]: Start difference. First operand has 181 places, 142 transitions, 1184 flow. Second operand 9 states and 125 transitions. [2024-06-28 03:40:41,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 151 transitions, 1498 flow [2024-06-28 03:40:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 151 transitions, 1442 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:41,400 INFO L231 Difference]: Finished difference. Result has 185 places, 142 transitions, 1232 flow [2024-06-28 03:40:41,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1232, PETRI_PLACES=185, PETRI_TRANSITIONS=142} [2024-06-28 03:40:41,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 03:40:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 142 transitions, 1232 flow [2024-06-28 03:40:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:41,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:41,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:40:41,401 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:41,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2095368179, now seen corresponding path program 5 times [2024-06-28 03:40:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24313016] [2024-06-28 03:40:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:42,159 INFO 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 03:40:42,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:42,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24313016] [2024-06-28 03:40:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24313016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:42,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776088856] [2024-06-28 03:40:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:42,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:42,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 142 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:42,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:42,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:42,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:42,499 INFO L124 PetriNetUnfolderBase]: 327/676 cut-off events. [2024-06-28 03:40:42,499 INFO L125 PetriNetUnfolderBase]: For 17460/17460 co-relation queries the response was YES. [2024-06-28 03:40:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 676 events. 327/676 cut-off events. For 17460/17460 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3551 event pairs, 52 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 3193. Up to 411 conditions per place. [2024-06-28 03:40:42,503 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 50 changer transitions 0/154 dead transitions. [2024-06-28 03:40:42,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 154 transitions, 1566 flow [2024-06-28 03:40:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-28 03:40:42,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:42,504 INFO L175 Difference]: Start difference. First operand has 185 places, 142 transitions, 1232 flow. Second operand 9 states and 126 transitions. [2024-06-28 03:40:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 154 transitions, 1566 flow [2024-06-28 03:40:42,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 154 transitions, 1463 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:42,544 INFO L231 Difference]: Finished difference. Result has 186 places, 143 transitions, 1245 flow [2024-06-28 03:40:42,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1245, PETRI_PLACES=186, PETRI_TRANSITIONS=143} [2024-06-28 03:40:42,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-28 03:40:42,544 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 143 transitions, 1245 flow [2024-06-28 03:40:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:42,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:42,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:42,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:40:42,545 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:42,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 627671269, now seen corresponding path program 1 times [2024-06-28 03:40:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962722334] [2024-06-28 03:40:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:43,507 INFO 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 03:40:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962722334] [2024-06-28 03:40:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962722334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094415928] [2024-06-28 03:40:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:43,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:43,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 143 transitions, 1245 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:43,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:43,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:43,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:43,874 INFO L124 PetriNetUnfolderBase]: 339/708 cut-off events. [2024-06-28 03:40:43,874 INFO L125 PetriNetUnfolderBase]: For 25695/25695 co-relation queries the response was YES. [2024-06-28 03:40:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 708 events. 339/708 cut-off events. For 25695/25695 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3755 event pairs, 57 based on Foata normal form. 8/711 useless extension candidates. Maximal degree in co-relation 3369. Up to 498 conditions per place. [2024-06-28 03:40:43,881 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 101 selfloop transitions, 45 changer transitions 6/156 dead transitions. [2024-06-28 03:40:43,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 156 transitions, 1621 flow [2024-06-28 03:40:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 03:40:43,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 03:40:43,882 INFO L175 Difference]: Start difference. First operand has 186 places, 143 transitions, 1245 flow. Second operand 10 states and 141 transitions. [2024-06-28 03:40:43,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 156 transitions, 1621 flow [2024-06-28 03:40:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 156 transitions, 1517 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:43,929 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1212 flow [2024-06-28 03:40:43,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1212, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-28 03:40:43,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 03:40:43,930 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1212 flow [2024-06-28 03:40:43,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:43,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:43,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:43,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:40:43,930 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:43,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash 517470915, now seen corresponding path program 2 times [2024-06-28 03:40:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:43,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433848469] [2024-06-28 03:40:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:43,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:44,916 INFO 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 03:40:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:44,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433848469] [2024-06-28 03:40:44,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433848469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:44,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:44,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745293802] [2024-06-28 03:40:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:45,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:45,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1212 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:45,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:45,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:45,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:45,332 INFO L124 PetriNetUnfolderBase]: 352/743 cut-off events. [2024-06-28 03:40:45,333 INFO L125 PetriNetUnfolderBase]: For 33228/33228 co-relation queries the response was YES. [2024-06-28 03:40:45,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 743 events. 352/743 cut-off events. For 33228/33228 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3980 event pairs, 68 based on Foata normal form. 6/744 useless extension candidates. Maximal degree in co-relation 3919. Up to 449 conditions per place. [2024-06-28 03:40:45,337 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 96 selfloop transitions, 53 changer transitions 5/158 dead transitions. [2024-06-28 03:40:45,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 158 transitions, 1732 flow [2024-06-28 03:40:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 03:40:45,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:45,338 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1212 flow. Second operand 11 states and 154 transitions. [2024-06-28 03:40:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 158 transitions, 1732 flow [2024-06-28 03:40:45,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 158 transitions, 1627 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:45,405 INFO L231 Difference]: Finished difference. Result has 188 places, 139 transitions, 1213 flow [2024-06-28 03:40:45,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1213, PETRI_PLACES=188, PETRI_TRANSITIONS=139} [2024-06-28 03:40:45,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 03:40:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 139 transitions, 1213 flow [2024-06-28 03:40:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:45,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:45,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:40:45,406 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:45,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash 517144485, now seen corresponding path program 3 times [2024-06-28 03:40:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032034674] [2024-06-28 03:40:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:45,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,292 INFO 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 03:40:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032034674] [2024-06-28 03:40:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032034674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:46,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501910863] [2024-06-28 03:40:46,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:46,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 139 transitions, 1213 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:46,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:46,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:46,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:46,664 INFO L124 PetriNetUnfolderBase]: 330/697 cut-off events. [2024-06-28 03:40:46,664 INFO L125 PetriNetUnfolderBase]: For 26159/26159 co-relation queries the response was YES. [2024-06-28 03:40:46,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 697 events. 330/697 cut-off events. For 26159/26159 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3695 event pairs, 62 based on Foata normal form. 8/700 useless extension candidates. Maximal degree in co-relation 3311. Up to 461 conditions per place. [2024-06-28 03:40:46,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 90 selfloop transitions, 50 changer transitions 9/153 dead transitions. [2024-06-28 03:40:46,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 153 transitions, 1585 flow [2024-06-28 03:40:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 03:40:46,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:40:46,669 INFO L175 Difference]: Start difference. First operand has 188 places, 139 transitions, 1213 flow. Second operand 11 states and 150 transitions. [2024-06-28 03:40:46,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 153 transitions, 1585 flow [2024-06-28 03:40:46,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 153 transitions, 1477 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:46,715 INFO L231 Difference]: Finished difference. Result has 188 places, 136 transitions, 1191 flow [2024-06-28 03:40:46,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1191, PETRI_PLACES=188, PETRI_TRANSITIONS=136} [2024-06-28 03:40:46,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 03:40:46,716 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 136 transitions, 1191 flow [2024-06-28 03:40:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:46,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:46,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:40:46,717 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:46,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash 468151969, now seen corresponding path program 6 times [2024-06-28 03:40:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966358494] [2024-06-28 03:40:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966358494] [2024-06-28 03:40:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966358494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:47,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966991260] [2024-06-28 03:40:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:47,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:47,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 136 transitions, 1191 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:47,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:47,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:47,918 INFO L124 PetriNetUnfolderBase]: 317/668 cut-off events. [2024-06-28 03:40:47,919 INFO L125 PetriNetUnfolderBase]: For 18840/18840 co-relation queries the response was YES. [2024-06-28 03:40:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 668 events. 317/668 cut-off events. For 18840/18840 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3509 event pairs, 69 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 3167. Up to 444 conditions per place. [2024-06-28 03:40:47,922 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 35 changer transitions 0/150 dead transitions. [2024-06-28 03:40:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 150 transitions, 1625 flow [2024-06-28 03:40:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:40:47,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:40:47,923 INFO L175 Difference]: Start difference. First operand has 188 places, 136 transitions, 1191 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:40:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 150 transitions, 1625 flow [2024-06-28 03:40:47,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 150 transitions, 1513 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:47,967 INFO L231 Difference]: Finished difference. Result has 185 places, 137 transitions, 1169 flow [2024-06-28 03:40:47,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1169, PETRI_PLACES=185, PETRI_TRANSITIONS=137} [2024-06-28 03:40:47,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 03:40:47,967 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 137 transitions, 1169 flow [2024-06-28 03:40:47,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:47,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:47,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:40:47,968 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:47,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1208542535, now seen corresponding path program 7 times [2024-06-28 03:40:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983602850] [2024-06-28 03:40:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:48,848 INFO 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 03:40:48,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983602850] [2024-06-28 03:40:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983602850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167189492] [2024-06-28 03:40:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:48,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:48,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:48,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:48,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 137 transitions, 1169 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:48,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:48,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:48,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:49,308 INFO L124 PetriNetUnfolderBase]: 321/676 cut-off events. [2024-06-28 03:40:49,309 INFO L125 PetriNetUnfolderBase]: For 18235/18235 co-relation queries the response was YES. [2024-06-28 03:40:49,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 676 events. 321/676 cut-off events. For 18235/18235 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3559 event pairs, 73 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 3165. Up to 503 conditions per place. [2024-06-28 03:40:49,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-06-28 03:40:49,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 150 transitions, 1501 flow [2024-06-28 03:40:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:40:49,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:40:49,315 INFO L175 Difference]: Start difference. First operand has 185 places, 137 transitions, 1169 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:40:49,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 150 transitions, 1501 flow [2024-06-28 03:40:49,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 150 transitions, 1381 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:49,359 INFO L231 Difference]: Finished difference. Result has 187 places, 138 transitions, 1143 flow [2024-06-28 03:40:49,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1143, PETRI_PLACES=187, PETRI_TRANSITIONS=138} [2024-06-28 03:40:49,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-28 03:40:49,360 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 138 transitions, 1143 flow [2024-06-28 03:40:49,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 03:40:49,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:49,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:49,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:40:49,360 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:49,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1393442703, now seen corresponding path program 8 times [2024-06-28 03:40:49,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:49,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138430092] [2024-06-28 03:40:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:49,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:50,155 INFO 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 03:40:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138430092] [2024-06-28 03:40:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138430092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:50,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:50,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229646527] [2024-06-28 03:40:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:50,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:50,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:50,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 138 transitions, 1143 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:50,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:50,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:50,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:50,554 INFO L124 PetriNetUnfolderBase]: 325/684 cut-off events. [2024-06-28 03:40:50,554 INFO L125 PetriNetUnfolderBase]: For 18843/18843 co-relation queries the response was YES. [2024-06-28 03:40:50,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3203 conditions, 684 events. 325/684 cut-off events. For 18843/18843 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3599 event pairs, 75 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 3119. Up to 511 conditions per place. [2024-06-28 03:40:50,558 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 33 changer transitions 0/150 dead transitions. [2024-06-28 03:40:50,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 150 transitions, 1471 flow [2024-06-28 03:40:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:40:50,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:40:50,559 INFO L175 Difference]: Start difference. First operand has 187 places, 138 transitions, 1143 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:40:50,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 150 transitions, 1471 flow [2024-06-28 03:40:50,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 150 transitions, 1393 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:50,608 INFO L231 Difference]: Finished difference. Result has 188 places, 139 transitions, 1149 flow [2024-06-28 03:40:50,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1149, PETRI_PLACES=188, PETRI_TRANSITIONS=139} [2024-06-28 03:40:50,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 03:40:50,609 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 139 transitions, 1149 flow [2024-06-28 03:40:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:50,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:50,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:50,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:40:50,609 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:50,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:50,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1587382113, now seen corresponding path program 9 times [2024-06-28 03:40:50,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:50,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543895399] [2024-06-28 03:40:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:51,424 INFO 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 03:40:51,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543895399] [2024-06-28 03:40:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543895399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971008766] [2024-06-28 03:40:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:51,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:51,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 139 transitions, 1149 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:51,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:51,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:51,768 INFO L124 PetriNetUnfolderBase]: 322/679 cut-off events. [2024-06-28 03:40:51,768 INFO L125 PetriNetUnfolderBase]: For 16889/16889 co-relation queries the response was YES. [2024-06-28 03:40:51,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 679 events. 322/679 cut-off events. For 16889/16889 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3579 event pairs, 74 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 2999. Up to 506 conditions per place. [2024-06-28 03:40:51,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 32 changer transitions 0/150 dead transitions. [2024-06-28 03:40:51,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 1465 flow [2024-06-28 03:40:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:51,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:40:51,773 INFO L175 Difference]: Start difference. First operand has 188 places, 139 transitions, 1149 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:51,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 1465 flow [2024-06-28 03:40:51,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 150 transitions, 1387 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:51,818 INFO L231 Difference]: Finished difference. Result has 190 places, 139 transitions, 1139 flow [2024-06-28 03:40:51,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1139, PETRI_PLACES=190, PETRI_TRANSITIONS=139} [2024-06-28 03:40:51,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-28 03:40:51,819 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 139 transitions, 1139 flow [2024-06-28 03:40:51,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:40:51,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:51,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:40:51,819 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:51,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash -785101407, now seen corresponding path program 4 times [2024-06-28 03:40:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681914516] [2024-06-28 03:40:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:52,723 INFO 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 03:40:52,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681914516] [2024-06-28 03:40:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681914516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:52,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507386796] [2024-06-28 03:40:52,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:52,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:52,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 139 transitions, 1139 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:52,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:52,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:52,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:53,148 INFO L124 PetriNetUnfolderBase]: 352/747 cut-off events. [2024-06-28 03:40:53,148 INFO L125 PetriNetUnfolderBase]: For 33205/33205 co-relation queries the response was YES. [2024-06-28 03:40:53,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 747 events. 352/747 cut-off events. For 33205/33205 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4021 event pairs, 75 based on Foata normal form. 6/748 useless extension candidates. Maximal degree in co-relation 3715. Up to 466 conditions per place. [2024-06-28 03:40:53,153 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 107 selfloop transitions, 40 changer transitions 6/157 dead transitions. [2024-06-28 03:40:53,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 157 transitions, 1655 flow [2024-06-28 03:40:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:40:53,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:40:53,154 INFO L175 Difference]: Start difference. First operand has 190 places, 139 transitions, 1139 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:40:53,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 157 transitions, 1655 flow [2024-06-28 03:40:53,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 157 transitions, 1580 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:53,238 INFO L231 Difference]: Finished difference. Result has 192 places, 137 transitions, 1136 flow [2024-06-28 03:40:53,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1136, PETRI_PLACES=192, PETRI_TRANSITIONS=137} [2024-06-28 03:40:53,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-28 03:40:53,239 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 137 transitions, 1136 flow [2024-06-28 03:40:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:53,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:53,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:40:53,239 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -573272219, now seen corresponding path program 5 times [2024-06-28 03:40:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228619795] [2024-06-28 03:40:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:54,359 INFO 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 03:40:54,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228619795] [2024-06-28 03:40:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228619795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204671952] [2024-06-28 03:40:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:54,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:54,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:54,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:54,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 137 transitions, 1136 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:54,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:54,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:54,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:54,758 INFO L124 PetriNetUnfolderBase]: 328/697 cut-off events. [2024-06-28 03:40:54,758 INFO L125 PetriNetUnfolderBase]: For 26342/26342 co-relation queries the response was YES. [2024-06-28 03:40:54,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3188 conditions, 697 events. 328/697 cut-off events. For 26342/26342 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3703 event pairs, 80 based on Foata normal form. 8/702 useless extension candidates. Maximal degree in co-relation 3101. Up to 500 conditions per place. [2024-06-28 03:40:54,763 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 28 changer transitions 13/151 dead transitions. [2024-06-28 03:40:54,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 151 transitions, 1500 flow [2024-06-28 03:40:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:40:54,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:40:54,764 INFO L175 Difference]: Start difference. First operand has 192 places, 137 transitions, 1136 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:40:54,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 151 transitions, 1500 flow [2024-06-28 03:40:54,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 151 transitions, 1418 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:54,817 INFO L231 Difference]: Finished difference. Result has 191 places, 132 transitions, 1081 flow [2024-06-28 03:40:54,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1081, PETRI_PLACES=191, PETRI_TRANSITIONS=132} [2024-06-28 03:40:54,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-28 03:40:54,818 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 132 transitions, 1081 flow [2024-06-28 03:40:54,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:40:54,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:54,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:40:54,818 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:54,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1686937189, now seen corresponding path program 6 times [2024-06-28 03:40:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108602334] [2024-06-28 03:40:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108602334] [2024-06-28 03:40:55,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108602334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:55,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:55,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177904421] [2024-06-28 03:40:55,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:55,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:55,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 132 transitions, 1081 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:55,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:55,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:55,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:56,367 INFO L124 PetriNetUnfolderBase]: 339/722 cut-off events. [2024-06-28 03:40:56,368 INFO L125 PetriNetUnfolderBase]: For 33169/33169 co-relation queries the response was YES. [2024-06-28 03:40:56,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3695 conditions, 722 events. 339/722 cut-off events. For 33169/33169 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3837 event pairs, 75 based on Foata normal form. 6/723 useless extension candidates. Maximal degree in co-relation 3609. Up to 446 conditions per place. [2024-06-28 03:40:56,372 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 48 changer transitions 6/151 dead transitions. [2024-06-28 03:40:56,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 151 transitions, 1587 flow [2024-06-28 03:40:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:40:56,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 03:40:56,373 INFO L175 Difference]: Start difference. First operand has 191 places, 132 transitions, 1081 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:40:56,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 151 transitions, 1587 flow [2024-06-28 03:40:56,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 151 transitions, 1495 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:56,439 INFO L231 Difference]: Finished difference. Result has 185 places, 130 transitions, 1097 flow [2024-06-28 03:40:56,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1097, PETRI_PLACES=185, PETRI_TRANSITIONS=130} [2024-06-28 03:40:56,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 03:40:56,440 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 130 transitions, 1097 flow [2024-06-28 03:40:56,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:56,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:56,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:56,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:40:56,440 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:56,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1686610759, now seen corresponding path program 7 times [2024-06-28 03:40:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338129727] [2024-06-28 03:40:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,469 INFO 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 03:40:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338129727] [2024-06-28 03:40:57,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338129727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171433797] [2024-06-28 03:40:57,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:57,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 130 transitions, 1097 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:57,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:57,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:57,896 INFO L124 PetriNetUnfolderBase]: 315/670 cut-off events. [2024-06-28 03:40:57,896 INFO L125 PetriNetUnfolderBase]: For 22761/22761 co-relation queries the response was YES. [2024-06-28 03:40:57,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 670 events. 315/670 cut-off events. For 22761/22761 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3520 event pairs, 67 based on Foata normal form. 8/673 useless extension candidates. Maximal degree in co-relation 2957. Up to 446 conditions per place. [2024-06-28 03:40:57,900 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 84 selfloop transitions, 44 changer transitions 13/145 dead transitions. [2024-06-28 03:40:57,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 145 transitions, 1443 flow [2024-06-28 03:40:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:40:57,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:40:57,901 INFO L175 Difference]: Start difference. First operand has 185 places, 130 transitions, 1097 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:40:57,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 145 transitions, 1443 flow [2024-06-28 03:40:57,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 145 transitions, 1345 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:57,950 INFO L231 Difference]: Finished difference. Result has 184 places, 125 transitions, 1058 flow [2024-06-28 03:40:57,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1058, PETRI_PLACES=184, PETRI_TRANSITIONS=125} [2024-06-28 03:40:57,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-28 03:40:57,951 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 125 transitions, 1058 flow [2024-06-28 03:40:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:57,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:57,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:40:57,951 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:57,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1698174485, now seen corresponding path program 8 times [2024-06-28 03:40:57,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:57,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491236677] [2024-06-28 03:40:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:58,891 INFO 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 03:40:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491236677] [2024-06-28 03:40:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491236677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:58,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:58,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051478921] [2024-06-28 03:40:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:58,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:58,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 125 transitions, 1058 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:58,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:58,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:59,376 INFO L124 PetriNetUnfolderBase]: 326/697 cut-off events. [2024-06-28 03:40:59,376 INFO L125 PetriNetUnfolderBase]: For 28613/28613 co-relation queries the response was YES. [2024-06-28 03:40:59,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 697 events. 326/697 cut-off events. For 28613/28613 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3666 event pairs, 75 based on Foata normal form. 6/698 useless extension candidates. Maximal degree in co-relation 3435. Up to 414 conditions per place. [2024-06-28 03:40:59,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 53 changer transitions 6/145 dead transitions. [2024-06-28 03:40:59,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 145 transitions, 1534 flow [2024-06-28 03:40:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:40:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:40:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-06-28 03:40:59,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2024-06-28 03:40:59,383 INFO L175 Difference]: Start difference. First operand has 184 places, 125 transitions, 1058 flow. Second operand 13 states and 174 transitions. [2024-06-28 03:40:59,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 145 transitions, 1534 flow [2024-06-28 03:40:59,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 145 transitions, 1410 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:59,454 INFO L231 Difference]: Finished difference. Result has 178 places, 123 transitions, 1049 flow [2024-06-28 03:40:59,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1049, PETRI_PLACES=178, PETRI_TRANSITIONS=123} [2024-06-28 03:40:59,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-28 03:40:59,455 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 123 transitions, 1049 flow [2024-06-28 03:40:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:40:59,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:59,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:40:59,456 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:59,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2002936415, now seen corresponding path program 9 times [2024-06-28 03:40:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322598900] [2024-06-28 03:40:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:00,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322598900] [2024-06-28 03:41:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322598900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:00,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:00,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851029228] [2024-06-28 03:41:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:00,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:00,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 123 transitions, 1049 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:00,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:00,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:00,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:00,928 INFO L124 PetriNetUnfolderBase]: 342/733 cut-off events. [2024-06-28 03:41:00,928 INFO L125 PetriNetUnfolderBase]: For 33658/33658 co-relation queries the response was YES. [2024-06-28 03:41:00,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 733 events. 342/733 cut-off events. For 33658/33658 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3905 event pairs, 84 based on Foata normal form. 6/736 useless extension candidates. Maximal degree in co-relation 3845. Up to 462 conditions per place. [2024-06-28 03:41:00,932 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 84 selfloop transitions, 51 changer transitions 6/145 dead transitions. [2024-06-28 03:41:00,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 145 transitions, 1513 flow [2024-06-28 03:41:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:41:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:41:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 174 transitions. [2024-06-28 03:41:00,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182692307692308 [2024-06-28 03:41:00,933 INFO L175 Difference]: Start difference. First operand has 178 places, 123 transitions, 1049 flow. Second operand 13 states and 174 transitions. [2024-06-28 03:41:00,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 145 transitions, 1513 flow [2024-06-28 03:41:01,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 145 transitions, 1401 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:01,004 INFO L231 Difference]: Finished difference. Result has 177 places, 121 transitions, 1032 flow [2024-06-28 03:41:01,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1032, PETRI_PLACES=177, PETRI_TRANSITIONS=121} [2024-06-28 03:41:01,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-28 03:41:01,005 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 121 transitions, 1032 flow [2024-06-28 03:41:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:01,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:01,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:41:01,005 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:01,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -759007631, now seen corresponding path program 10 times [2024-06-28 03:41:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:01,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358937405] [2024-06-28 03:41:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:01,976 INFO 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 03:41:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:01,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358937405] [2024-06-28 03:41:01,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358937405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:01,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048640181] [2024-06-28 03:41:01,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:02,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:02,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 121 transitions, 1032 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:02,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:02,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:02,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:02,430 INFO L124 PetriNetUnfolderBase]: 318/679 cut-off events. [2024-06-28 03:41:02,431 INFO L125 PetriNetUnfolderBase]: For 27686/27686 co-relation queries the response was YES. [2024-06-28 03:41:02,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 679 events. 318/679 cut-off events. For 27686/27686 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3558 event pairs, 79 based on Foata normal form. 8/682 useless extension candidates. Maximal degree in co-relation 3299. Up to 462 conditions per place. [2024-06-28 03:41:02,435 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 75 selfloop transitions, 44 changer transitions 13/136 dead transitions. [2024-06-28 03:41:02,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 136 transitions, 1352 flow [2024-06-28 03:41:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:41:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:02,436 INFO L175 Difference]: Start difference. First operand has 177 places, 121 transitions, 1032 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:41:02,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 136 transitions, 1352 flow [2024-06-28 03:41:02,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 136 transitions, 1248 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 03:41:02,490 INFO L231 Difference]: Finished difference. Result has 175 places, 116 transitions, 985 flow [2024-06-28 03:41:02,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=985, PETRI_PLACES=175, PETRI_TRANSITIONS=116} [2024-06-28 03:41:02,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-28 03:41:02,490 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 116 transitions, 985 flow [2024-06-28 03:41:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:02,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:02,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:41:02,491 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:02,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash 18058853, now seen corresponding path program 11 times [2024-06-28 03:41:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:02,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880544917] [2024-06-28 03:41:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:02,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:03,527 INFO 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 03:41:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880544917] [2024-06-28 03:41:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880544917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536083132] [2024-06-28 03:41:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:03,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:03,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 116 transitions, 985 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:03,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:03,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:03,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:03,983 INFO L124 PetriNetUnfolderBase]: 289/618 cut-off events. [2024-06-28 03:41:03,983 INFO L125 PetriNetUnfolderBase]: For 18703/18703 co-relation queries the response was YES. [2024-06-28 03:41:03,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 618 events. 289/618 cut-off events. For 18703/18703 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3161 event pairs, 80 based on Foata normal form. 8/623 useless extension candidates. Maximal degree in co-relation 2689. Up to 434 conditions per place. [2024-06-28 03:41:03,987 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 84 selfloop transitions, 32 changer transitions 11/131 dead transitions. [2024-06-28 03:41:03,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 131 transitions, 1295 flow [2024-06-28 03:41:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:41:03,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:41:03,988 INFO L175 Difference]: Start difference. First operand has 175 places, 116 transitions, 985 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:41:03,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 131 transitions, 1295 flow [2024-06-28 03:41:04,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 131 transitions, 1201 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:04,022 INFO L231 Difference]: Finished difference. Result has 169 places, 112 transitions, 933 flow [2024-06-28 03:41:04,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=933, PETRI_PLACES=169, PETRI_TRANSITIONS=112} [2024-06-28 03:41:04,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-28 03:41:04,022 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 112 transitions, 933 flow [2024-06-28 03:41:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:04,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:04,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:41:04,023 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:04,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash 389283233, now seen corresponding path program 12 times [2024-06-28 03:41:04,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005457158] [2024-06-28 03:41:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:04,953 INFO 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 03:41:04,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005457158] [2024-06-28 03:41:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005457158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:04,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:04,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445625293] [2024-06-28 03:41:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:04,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:04,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:04,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:05,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:05,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 112 transitions, 933 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:05,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:05,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:05,353 INFO L124 PetriNetUnfolderBase]: 272/585 cut-off events. [2024-06-28 03:41:05,353 INFO L125 PetriNetUnfolderBase]: For 13186/13186 co-relation queries the response was YES. [2024-06-28 03:41:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 585 events. 272/585 cut-off events. For 13186/13186 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2923 event pairs, 58 based on Foata normal form. 6/586 useless extension candidates. Maximal degree in co-relation 2411. Up to 363 conditions per place. [2024-06-28 03:41:05,357 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 67 selfloop transitions, 42 changer transitions 14/127 dead transitions. [2024-06-28 03:41:05,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 127 transitions, 1211 flow [2024-06-28 03:41:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:41:05,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:41:05,358 INFO L175 Difference]: Start difference. First operand has 169 places, 112 transitions, 933 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:41:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 127 transitions, 1211 flow [2024-06-28 03:41:05,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 127 transitions, 1135 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:05,383 INFO L231 Difference]: Finished difference. Result has 164 places, 106 transitions, 892 flow [2024-06-28 03:41:05,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=892, PETRI_PLACES=164, PETRI_TRANSITIONS=106} [2024-06-28 03:41:05,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 03:41:05,384 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 106 transitions, 892 flow [2024-06-28 03:41:05,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:05,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:05,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:05,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:41:05,384 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:05,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash 878908201, now seen corresponding path program 10 times [2024-06-28 03:41:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:05,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345817045] [2024-06-28 03:41:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:06,097 INFO 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 03:41:06,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345817045] [2024-06-28 03:41:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345817045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:06,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225502723] [2024-06-28 03:41:06,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:06,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:06,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:06,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:06,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 106 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:41:06,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:06,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:06,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:06,355 INFO L124 PetriNetUnfolderBase]: 245/516 cut-off events. [2024-06-28 03:41:06,356 INFO L125 PetriNetUnfolderBase]: For 7393/7393 co-relation queries the response was YES. [2024-06-28 03:41:06,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 516 events. 245/516 cut-off events. For 7393/7393 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2456 event pairs, 32 based on Foata normal form. 2/513 useless extension candidates. Maximal degree in co-relation 2091. Up to 361 conditions per place. [2024-06-28 03:41:06,359 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 95 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2024-06-28 03:41:06,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 119 transitions, 1150 flow [2024-06-28 03:41:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:41:06,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:41:06,359 INFO L175 Difference]: Start difference. First operand has 164 places, 106 transitions, 892 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:41:06,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 119 transitions, 1150 flow [2024-06-28 03:41:06,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 119 transitions, 1035 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:06,377 INFO L231 Difference]: Finished difference. Result has 154 places, 106 transitions, 823 flow [2024-06-28 03:41:06,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=823, PETRI_PLACES=154, PETRI_TRANSITIONS=106} [2024-06-28 03:41:06,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-28 03:41:06,377 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 106 transitions, 823 flow [2024-06-28 03:41:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 03:41:06,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:06,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:06,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:41:06,378 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:06,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash 287452761, now seen corresponding path program 1 times [2024-06-28 03:41:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505876000] [2024-06-28 03:41:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:07,233 INFO 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 03:41:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:07,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505876000] [2024-06-28 03:41:07,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505876000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:07,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:07,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:07,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765755687] [2024-06-28 03:41:07,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:07,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:07,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:07,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:07,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:07,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 106 transitions, 823 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:07,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:07,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:07,514 INFO L124 PetriNetUnfolderBase]: 253/536 cut-off events. [2024-06-28 03:41:07,514 INFO L125 PetriNetUnfolderBase]: For 9645/9645 co-relation queries the response was YES. [2024-06-28 03:41:07,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 536 events. 253/536 cut-off events. For 9645/9645 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2569 event pairs, 41 based on Foata normal form. 6/537 useless extension candidates. Maximal degree in co-relation 2051. Up to 353 conditions per place. [2024-06-28 03:41:07,516 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 7 changer transitions 30/123 dead transitions. [2024-06-28 03:41:07,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 123 transitions, 1099 flow [2024-06-28 03:41:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:41:07,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:41:07,517 INFO L175 Difference]: Start difference. First operand has 154 places, 106 transitions, 823 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:41:07,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 123 transitions, 1099 flow [2024-06-28 03:41:07,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 123 transitions, 1008 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:07,532 INFO L231 Difference]: Finished difference. Result has 154 places, 92 transitions, 644 flow [2024-06-28 03:41:07,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=644, PETRI_PLACES=154, PETRI_TRANSITIONS=92} [2024-06-28 03:41:07,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-28 03:41:07,533 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 92 transitions, 644 flow [2024-06-28 03:41:07,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:07,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:41:07,533 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -361200753, now seen corresponding path program 2 times [2024-06-28 03:41:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324834249] [2024-06-28 03:41:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324834249] [2024-06-28 03:41:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324834249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551343537] [2024-06-28 03:41:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:08,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:08,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 92 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:08,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:08,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:08,769 INFO L124 PetriNetUnfolderBase]: 209/452 cut-off events. [2024-06-28 03:41:08,769 INFO L125 PetriNetUnfolderBase]: For 9556/9556 co-relation queries the response was YES. [2024-06-28 03:41:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 452 events. 209/452 cut-off events. For 9556/9556 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2062 event pairs, 39 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1603. Up to 288 conditions per place. [2024-06-28 03:41:08,771 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 30 changer transitions 9/106 dead transitions. [2024-06-28 03:41:08,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 106 transitions, 881 flow [2024-06-28 03:41:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 03:41:08,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:41:08,772 INFO L175 Difference]: Start difference. First operand has 154 places, 92 transitions, 644 flow. Second operand 10 states and 128 transitions. [2024-06-28 03:41:08,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 106 transitions, 881 flow [2024-06-28 03:41:08,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 106 transitions, 847 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:08,783 INFO L231 Difference]: Finished difference. Result has 139 places, 91 transitions, 670 flow [2024-06-28 03:41:08,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=670, PETRI_PLACES=139, PETRI_TRANSITIONS=91} [2024-06-28 03:41:08,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-28 03:41:08,783 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 91 transitions, 670 flow [2024-06-28 03:41:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:08,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:08,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:41:08,784 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:08,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2023528341, now seen corresponding path program 3 times [2024-06-28 03:41:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835223177] [2024-06-28 03:41:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:09,748 INFO 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 03:41:09,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:09,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835223177] [2024-06-28 03:41:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835223177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:09,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:09,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956279667] [2024-06-28 03:41:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:09,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:09,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 91 transitions, 670 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:09,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:09,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:10,078 INFO L124 PetriNetUnfolderBase]: 199/434 cut-off events. [2024-06-28 03:41:10,078 INFO L125 PetriNetUnfolderBase]: For 7357/7357 co-relation queries the response was YES. [2024-06-28 03:41:10,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 434 events. 199/434 cut-off events. For 7357/7357 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1943 event pairs, 41 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 1585. Up to 246 conditions per place. [2024-06-28 03:41:10,080 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 34 changer transitions 12/102 dead transitions. [2024-06-28 03:41:10,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 102 transitions, 890 flow [2024-06-28 03:41:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:41:10,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:41:10,081 INFO L175 Difference]: Start difference. First operand has 139 places, 91 transitions, 670 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:41:10,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 102 transitions, 890 flow [2024-06-28 03:41:10,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 822 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:10,093 INFO L231 Difference]: Finished difference. Result has 137 places, 86 transitions, 641 flow [2024-06-28 03:41:10,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=137, PETRI_TRANSITIONS=86} [2024-06-28 03:41:10,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-28 03:41:10,093 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 86 transitions, 641 flow [2024-06-28 03:41:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:10,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:10,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:10,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:41:10,093 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:10,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1990335671, now seen corresponding path program 4 times [2024-06-28 03:41:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732148163] [2024-06-28 03:41:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:10,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:11,010 INFO 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 03:41:11,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:11,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732148163] [2024-06-28 03:41:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732148163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030901060] [2024-06-28 03:41:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:11,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:11,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 86 transitions, 641 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:11,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:11,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:11,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:11,315 INFO L124 PetriNetUnfolderBase]: 209/456 cut-off events. [2024-06-28 03:41:11,315 INFO L125 PetriNetUnfolderBase]: For 7393/7393 co-relation queries the response was YES. [2024-06-28 03:41:11,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 456 events. 209/456 cut-off events. For 7393/7393 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2080 event pairs, 36 based on Foata normal form. 6/459 useless extension candidates. Maximal degree in co-relation 1619. Up to 256 conditions per place. [2024-06-28 03:41:11,317 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 16 changer transitions 16/105 dead transitions. [2024-06-28 03:41:11,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 105 transitions, 892 flow [2024-06-28 03:41:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:41:11,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:41:11,318 INFO L175 Difference]: Start difference. First operand has 137 places, 86 transitions, 641 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:41:11,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 105 transitions, 892 flow [2024-06-28 03:41:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 799 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:11,328 INFO L231 Difference]: Finished difference. Result has 135 places, 84 transitions, 574 flow [2024-06-28 03:41:11,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=574, PETRI_PLACES=135, PETRI_TRANSITIONS=84} [2024-06-28 03:41:11,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-28 03:41:11,328 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 84 transitions, 574 flow [2024-06-28 03:41:11,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:11,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:11,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:11,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:41:11,328 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:11,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2100563545, now seen corresponding path program 5 times [2024-06-28 03:41:11,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422849241] [2024-06-28 03:41:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:12,220 INFO 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 03:41:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422849241] [2024-06-28 03:41:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422849241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371496376] [2024-06-28 03:41:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:12,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:12,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 84 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:12,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:12,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:12,525 INFO L124 PetriNetUnfolderBase]: 189/420 cut-off events. [2024-06-28 03:41:12,525 INFO L125 PetriNetUnfolderBase]: For 6557/6557 co-relation queries the response was YES. [2024-06-28 03:41:12,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 420 events. 189/420 cut-off events. For 6557/6557 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1896 event pairs, 41 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1451. Up to 252 conditions per place. [2024-06-28 03:41:12,527 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 17 changer transitions 24/98 dead transitions. [2024-06-28 03:41:12,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 98 transitions, 794 flow [2024-06-28 03:41:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:41:12,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 03:41:12,528 INFO L175 Difference]: Start difference. First operand has 135 places, 84 transitions, 574 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:41:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 98 transitions, 794 flow [2024-06-28 03:41:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 98 transitions, 755 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:12,539 INFO L231 Difference]: Finished difference. Result has 132 places, 71 transitions, 465 flow [2024-06-28 03:41:12,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=465, PETRI_PLACES=132, PETRI_TRANSITIONS=71} [2024-06-28 03:41:12,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 03:41:12,539 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 71 transitions, 465 flow [2024-06-28 03:41:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:12,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:12,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:12,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:41:12,539 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:12,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:12,540 INFO L85 PathProgramCache]: Analyzing trace with hash 860755151, now seen corresponding path program 6 times [2024-06-28 03:41:12,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:12,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679370090] [2024-06-28 03:41:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:12,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:13,545 INFO 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 03:41:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:13,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679370090] [2024-06-28 03:41:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679370090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:13,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184235804] [2024-06-28 03:41:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:13,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:13,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 71 transitions, 465 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:13,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:13,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:13,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:13,891 INFO L124 PetriNetUnfolderBase]: 168/373 cut-off events. [2024-06-28 03:41:13,891 INFO L125 PetriNetUnfolderBase]: For 5989/5989 co-relation queries the response was YES. [2024-06-28 03:41:13,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 373 events. 168/373 cut-off events. For 5989/5989 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1599 event pairs, 38 based on Foata normal form. 6/378 useless extension candidates. Maximal degree in co-relation 1255. Up to 214 conditions per place. [2024-06-28 03:41:13,893 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 44 selfloop transitions, 26 changer transitions 13/87 dead transitions. [2024-06-28 03:41:13,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 87 transitions, 673 flow [2024-06-28 03:41:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:41:13,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:41:13,894 INFO L175 Difference]: Start difference. First operand has 132 places, 71 transitions, 465 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:41:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 87 transitions, 673 flow [2024-06-28 03:41:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 87 transitions, 594 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-28 03:41:13,903 INFO L231 Difference]: Finished difference. Result has 117 places, 70 transitions, 442 flow [2024-06-28 03:41:13,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=442, PETRI_PLACES=117, PETRI_TRANSITIONS=70} [2024-06-28 03:41:13,903 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-28 03:41:13,903 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 70 transitions, 442 flow [2024-06-28 03:41:13,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:13,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:13,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:13,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:41:13,904 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:13,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash -937652251, now seen corresponding path program 7 times [2024-06-28 03:41:13,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:13,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31812456] [2024-06-28 03:41:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:13,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31812456] [2024-06-28 03:41:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31812456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708982423] [2024-06-28 03:41:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:14,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:14,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 70 transitions, 442 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:14,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:14,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:15,208 INFO L124 PetriNetUnfolderBase]: 166/369 cut-off events. [2024-06-28 03:41:15,208 INFO L125 PetriNetUnfolderBase]: For 5641/5645 co-relation queries the response was YES. [2024-06-28 03:41:15,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 369 events. 166/369 cut-off events. For 5641/5645 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1581 event pairs, 38 based on Foata normal form. 10/378 useless extension candidates. Maximal degree in co-relation 1224. Up to 214 conditions per place. [2024-06-28 03:41:15,209 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 45 selfloop transitions, 24 changer transitions 13/86 dead transitions. [2024-06-28 03:41:15,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 86 transitions, 653 flow [2024-06-28 03:41:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:41:15,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:41:15,210 INFO L175 Difference]: Start difference. First operand has 117 places, 70 transitions, 442 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:41:15,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 86 transitions, 653 flow [2024-06-28 03:41:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 86 transitions, 589 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:15,217 INFO L231 Difference]: Finished difference. Result has 117 places, 69 transitions, 433 flow [2024-06-28 03:41:15,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=433, PETRI_PLACES=117, PETRI_TRANSITIONS=69} [2024-06-28 03:41:15,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-28 03:41:15,218 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 69 transitions, 433 flow [2024-06-28 03:41:15,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:15,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:15,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:15,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:41:15,218 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash -863740721, now seen corresponding path program 8 times [2024-06-28 03:41:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:15,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066634392] [2024-06-28 03:41:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:16,286 INFO 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 03:41:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066634392] [2024-06-28 03:41:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066634392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:16,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:16,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132856724] [2024-06-28 03:41:16,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:16,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:16,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:16,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:16,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 69 transitions, 433 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:16,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:16,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:16,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:16,738 INFO L124 PetriNetUnfolderBase]: 155/348 cut-off events. [2024-06-28 03:41:16,738 INFO L125 PetriNetUnfolderBase]: For 5633/5637 co-relation queries the response was YES. [2024-06-28 03:41:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 348 events. 155/348 cut-off events. For 5633/5637 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1450 event pairs, 36 based on Foata normal form. 10/357 useless extension candidates. Maximal degree in co-relation 1152. Up to 196 conditions per place. [2024-06-28 03:41:16,740 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 21 changer transitions 13/82 dead transitions. [2024-06-28 03:41:16,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 82 transitions, 617 flow [2024-06-28 03:41:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:41:16,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 03:41:16,740 INFO L175 Difference]: Start difference. First operand has 117 places, 69 transitions, 433 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:41:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 82 transitions, 617 flow [2024-06-28 03:41:16,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 82 transitions, 563 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:16,747 INFO L231 Difference]: Finished difference. Result has 115 places, 65 transitions, 405 flow [2024-06-28 03:41:16,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=405, PETRI_PLACES=115, PETRI_TRANSITIONS=65} [2024-06-28 03:41:16,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-28 03:41:16,748 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 65 transitions, 405 flow [2024-06-28 03:41:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:16,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:16,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:16,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:41:16,748 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:16,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1034443151, now seen corresponding path program 9 times [2024-06-28 03:41:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5802553] [2024-06-28 03:41:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:16,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,750 INFO 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 03:41:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5802553] [2024-06-28 03:41:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5802553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472480747] [2024-06-28 03:41:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:17,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:17,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:17,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 65 transitions, 405 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:17,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:17,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:18,137 INFO L124 PetriNetUnfolderBase]: 152/343 cut-off events. [2024-06-28 03:41:18,137 INFO L125 PetriNetUnfolderBase]: For 5599/5599 co-relation queries the response was YES. [2024-06-28 03:41:18,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 343 events. 152/343 cut-off events. For 5599/5599 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1432 event pairs, 36 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1126. Up to 186 conditions per place. [2024-06-28 03:41:18,138 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 17 changer transitions 18/81 dead transitions. [2024-06-28 03:41:18,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 81 transitions, 596 flow [2024-06-28 03:41:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:41:18,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 03:41:18,139 INFO L175 Difference]: Start difference. First operand has 115 places, 65 transitions, 405 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:41:18,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 81 transitions, 596 flow [2024-06-28 03:41:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 81 transitions, 546 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:18,146 INFO L231 Difference]: Finished difference. Result has 112 places, 60 transitions, 364 flow [2024-06-28 03:41:18,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=364, PETRI_PLACES=112, PETRI_TRANSITIONS=60} [2024-06-28 03:41:18,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-28 03:41:18,147 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 60 transitions, 364 flow [2024-06-28 03:41:18,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:18,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:18,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:41:18,147 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:18,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash 720379667, now seen corresponding path program 10 times [2024-06-28 03:41:18,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:18,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114336525] [2024-06-28 03:41:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:19,237 INFO 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 03:41:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114336525] [2024-06-28 03:41:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114336525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695962774] [2024-06-28 03:41:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:19,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:19,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 60 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:19,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:19,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:19,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:19,630 INFO L124 PetriNetUnfolderBase]: 133/310 cut-off events. [2024-06-28 03:41:19,630 INFO L125 PetriNetUnfolderBase]: For 4887/4887 co-relation queries the response was YES. [2024-06-28 03:41:19,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 310 events. 133/310 cut-off events. For 4887/4887 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1255 event pairs, 32 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 1016. Up to 160 conditions per place. [2024-06-28 03:41:19,631 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 37 selfloop transitions, 14 changer transitions 19/74 dead transitions. [2024-06-28 03:41:19,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 74 transitions, 534 flow [2024-06-28 03:41:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:41:19,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:41:19,632 INFO L175 Difference]: Start difference. First operand has 112 places, 60 transitions, 364 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:41:19,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 74 transitions, 534 flow [2024-06-28 03:41:19,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 74 transitions, 494 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:19,638 INFO L231 Difference]: Finished difference. Result has 108 places, 52 transitions, 312 flow [2024-06-28 03:41:19,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=108, PETRI_TRANSITIONS=52} [2024-06-28 03:41:19,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-28 03:41:19,639 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 52 transitions, 312 flow [2024-06-28 03:41:19,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:19,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:19,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:41:19,639 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:19,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:19,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1144671025, now seen corresponding path program 11 times [2024-06-28 03:41:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:19,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022709681] [2024-06-28 03:41:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:20,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022709681] [2024-06-28 03:41:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022709681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:20,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:20,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:20,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407422704] [2024-06-28 03:41:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:20,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:20,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 52 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:20,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:20,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:20,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:20,956 INFO L124 PetriNetUnfolderBase]: 112/269 cut-off events. [2024-06-28 03:41:20,957 INFO L125 PetriNetUnfolderBase]: For 4849/4849 co-relation queries the response was YES. [2024-06-28 03:41:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 269 events. 112/269 cut-off events. For 4849/4849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1031 event pairs, 17 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 886. Up to 78 conditions per place. [2024-06-28 03:41:20,958 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 25 selfloop transitions, 14 changer transitions 24/67 dead transitions. [2024-06-28 03:41:20,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 67 transitions, 470 flow [2024-06-28 03:41:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:41:20,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 03:41:20,959 INFO L175 Difference]: Start difference. First operand has 108 places, 52 transitions, 312 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:41:20,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 67 transitions, 470 flow [2024-06-28 03:41:20,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 67 transitions, 434 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:20,963 INFO L231 Difference]: Finished difference. Result has 101 places, 38 transitions, 226 flow [2024-06-28 03:41:20,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=226, PETRI_PLACES=101, PETRI_TRANSITIONS=38} [2024-06-28 03:41:20,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-28 03:41:20,964 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 38 transitions, 226 flow [2024-06-28 03:41:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:20,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:20,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:41:20,964 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:20,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 292973597, now seen corresponding path program 12 times [2024-06-28 03:41:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420577830] [2024-06-28 03:41:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:21,997 INFO 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 03:41:21,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420577830] [2024-06-28 03:41:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420577830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:21,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:21,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622344754] [2024-06-28 03:41:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:22,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:22,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 38 transitions, 226 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:22,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:22,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:22,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,368 INFO L124 PetriNetUnfolderBase]: 77/182 cut-off events. [2024-06-28 03:41:22,368 INFO L125 PetriNetUnfolderBase]: For 3792/3792 co-relation queries the response was YES. [2024-06-28 03:41:22,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 182 events. 77/182 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 587 event pairs, 21 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 632. Up to 96 conditions per place. [2024-06-28 03:41:22,369 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 23 selfloop transitions, 11 changer transitions 13/51 dead transitions. [2024-06-28 03:41:22,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 51 transitions, 348 flow [2024-06-28 03:41:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:41:22,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 03:41:22,369 INFO L175 Difference]: Start difference. First operand has 101 places, 38 transitions, 226 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:41:22,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 51 transitions, 348 flow [2024-06-28 03:41:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 51 transitions, 293 flow, removed 8 selfloop flow, removed 18 redundant places. [2024-06-28 03:41:22,372 INFO L231 Difference]: Finished difference. Result has 79 places, 34 transitions, 178 flow [2024-06-28 03:41:22,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=34} [2024-06-28 03:41:22,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-28 03:41:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 34 transitions, 178 flow [2024-06-28 03:41:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:22,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:22,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:22,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:41:22,373 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:22,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash 739738423, now seen corresponding path program 13 times [2024-06-28 03:41:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903224939] [2024-06-28 03:41:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:23,366 INFO 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 03:41:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:23,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903224939] [2024-06-28 03:41:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903224939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:23,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:23,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860174253] [2024-06-28 03:41:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:23,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:23,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:23,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:23,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 34 transitions, 178 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:23,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:23,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:23,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:23,667 INFO L124 PetriNetUnfolderBase]: 66/161 cut-off events. [2024-06-28 03:41:23,667 INFO L125 PetriNetUnfolderBase]: For 1992/1996 co-relation queries the response was YES. [2024-06-28 03:41:23,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 161 events. 66/161 cut-off events. For 1992/1996 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 19 based on Foata normal form. 10/171 useless extension candidates. Maximal degree in co-relation 514. Up to 78 conditions per place. [2024-06-28 03:41:23,668 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 21 selfloop transitions, 7 changer transitions 15/47 dead transitions. [2024-06-28 03:41:23,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 47 transitions, 292 flow [2024-06-28 03:41:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:41:23,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 03:41:23,668 INFO L175 Difference]: Start difference. First operand has 79 places, 34 transitions, 178 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:41:23,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 47 transitions, 292 flow [2024-06-28 03:41:23,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 47 transitions, 264 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:23,670 INFO L231 Difference]: Finished difference. Result has 74 places, 29 transitions, 145 flow [2024-06-28 03:41:23,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=145, PETRI_PLACES=74, PETRI_TRANSITIONS=29} [2024-06-28 03:41:23,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-28 03:41:23,671 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 29 transitions, 145 flow [2024-06-28 03:41:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:23,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:23,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:23,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:41:23,671 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash -119426549, now seen corresponding path program 14 times [2024-06-28 03:41:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813324658] [2024-06-28 03:41:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:24,773 INFO 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 03:41:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813324658] [2024-06-28 03:41:24,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813324658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:24,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740028254] [2024-06-28 03:41:24,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:24,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:24,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:24,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 29 transitions, 145 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:24,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:24,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:24,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:25,166 INFO L124 PetriNetUnfolderBase]: 54/135 cut-off events. [2024-06-28 03:41:25,166 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-06-28 03:41:25,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 135 events. 54/135 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 17 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 428. Up to 60 conditions per place. [2024-06-28 03:41:25,167 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 16 selfloop transitions, 6 changer transitions 17/43 dead transitions. [2024-06-28 03:41:25,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 43 transitions, 253 flow [2024-06-28 03:41:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:41:25,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:41:25,171 INFO L175 Difference]: Start difference. First operand has 74 places, 29 transitions, 145 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:41:25,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 43 transitions, 253 flow [2024-06-28 03:41:25,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 43 transitions, 231 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:25,172 INFO L231 Difference]: Finished difference. Result has 68 places, 23 transitions, 110 flow [2024-06-28 03:41:25,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=110, PETRI_PLACES=68, PETRI_TRANSITIONS=23} [2024-06-28 03:41:25,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 03:41:25,173 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 23 transitions, 110 flow [2024-06-28 03:41:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 03:41:25,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:25,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:41:25,173 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:25,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -385300357, now seen corresponding path program 15 times [2024-06-28 03:41:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952353184] [2024-06-28 03:41:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:26,174 INFO 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 03:41:26,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952353184] [2024-06-28 03:41:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952353184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:26,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584230519] [2024-06-28 03:41:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:26,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:26,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 23 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:26,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:26,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:26,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:26,453 INFO L124 PetriNetUnfolderBase]: 26/71 cut-off events. [2024-06-28 03:41:26,453 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-28 03:41:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 71 events. 26/71 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 180. Up to 24 conditions per place. [2024-06-28 03:41:26,453 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-28 03:41:26,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 32 transitions, 158 flow [2024-06-28 03:41:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:41:26,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 03:41:26,454 INFO L175 Difference]: Start difference. First operand has 68 places, 23 transitions, 110 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:41:26,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 32 transitions, 158 flow [2024-06-28 03:41:26,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 32 transitions, 126 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 03:41:26,455 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-06-28 03:41:26,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-06-28 03:41:26,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-28 03:41:26,455 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-06-28 03:41:26,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 03:41:26,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:41:26,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:41:26,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:41:26,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:41:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:41:26,458 INFO L445 BasicCegarLoop]: Path program histogram: [15, 12, 10, 8, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:26,461 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:41:26,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:41:26,464 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:41:26,464 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:41:26,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:41:26 BasicIcfg [2024-06-28 03:41:26,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:41:26,465 INFO L158 Benchmark]: Toolchain (without parser) took 107995.86ms. Allocated memory was 136.3MB in the beginning and 843.1MB in the end (delta: 706.7MB). Free memory was 73.3MB in the beginning and 786.0MB in the end (delta: -712.8MB). Peak memory consumption was 479.5MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,465 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:41:26,465 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:41:26,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.90ms. Allocated memory was 136.3MB in the beginning and 190.8MB in the end (delta: 54.5MB). Free memory was 73.3MB in the beginning and 148.9MB in the end (delta: -75.6MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.34ms. Allocated memory is still 190.8MB. Free memory was 148.9MB in the beginning and 145.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,466 INFO L158 Benchmark]: Boogie Preprocessor took 58.28ms. Allocated memory is still 190.8MB. Free memory was 145.7MB in the beginning and 142.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,466 INFO L158 Benchmark]: RCFGBuilder took 539.11ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 94.4MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,466 INFO L158 Benchmark]: TraceAbstraction took 106760.99ms. Allocated memory was 190.8MB in the beginning and 843.1MB in the end (delta: 652.2MB). Free memory was 93.3MB in the beginning and 786.0MB in the end (delta: -692.7MB). Peak memory consumption was 443.4MB. Max. memory is 16.1GB. [2024-06-28 03:41:26,467 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 136.3MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.90ms. Allocated memory was 136.3MB in the beginning and 190.8MB in the end (delta: 54.5MB). Free memory was 73.3MB in the beginning and 148.9MB in the end (delta: -75.6MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.34ms. Allocated memory is still 190.8MB. Free memory was 148.9MB in the beginning and 145.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.28ms. Allocated memory is still 190.8MB. Free memory was 145.7MB in the beginning and 142.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.11ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 94.4MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 106760.99ms. Allocated memory was 190.8MB in the beginning and 843.1MB in the end (delta: 652.2MB). Free memory was 93.3MB in the beginning and 786.0MB in the end (delta: -692.7MB). Peak memory consumption was 443.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 817]: 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, 52 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: 106.7s, OverallIterations: 91, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6006 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5051 mSDsluCounter, 4736 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4289 mSDsCounter, 893 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32168 IncrementalHoareTripleChecker+Invalid, 33061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 893 mSolverCounterUnsat, 447 mSDtfsCounter, 32168 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 961 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1245occurred in iteration=59, InterpolantAutomatonStates: 855, 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, 0.6s SatisfiabilityAnalysisTime, 73.4s InterpolantComputationTime, 1554 NumberOfCodeBlocks, 1554 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 1463 ConstructedInterpolants, 0 QuantifiedInterpolants, 70280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 91 InterpolantComputations, 91 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 03:41:26,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE