./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:48:39,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:48:40,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:48:40,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:48:40,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:48:40,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:48:40,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:48:40,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:48:40,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:48:40,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:48:40,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:48:40,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:48:40,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:48:40,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:48:40,054 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:48:40,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:48:40,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:48:40,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:48:40,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:48:40,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:48:40,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:48:40,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:48:40,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:48:40,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:48:40,056 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:48:40,056 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:48:40,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:48:40,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:48:40,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:48:40,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:48:40,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:48:40,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:48:40,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:48:40,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:48:40,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:48:40,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:48:40,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:48:40,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:48:40,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:48:40,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:48:40,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:48:40,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:48:40,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:48:40,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:48:40,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:48:40,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:48:40,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:48:40,327 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:48:40,327 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:48:40,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 18:48:40,494 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:48:40,494 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:48:40,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-27 18:48:41,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:48:41,796 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:48:41,797 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-27 18:48:41,836 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098db96ba/b4bf6185e5324182976549c62a6049e9/FLAGd9f9d8656 [2024-06-27 18:48:41,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098db96ba/b4bf6185e5324182976549c62a6049e9 [2024-06-27 18:48:41,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:48:41,857 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:48:41,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:48:41,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:48:41,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:48:41,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:48:40" (1/2) ... [2024-06-27 18:48:41,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ee0a6e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:48:41, skipping insertion in model container [2024-06-27 18:48:41,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:48:40" (1/2) ... [2024-06-27 18:48:41,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a3242cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:48:41, skipping insertion in model container [2024-06-27 18:48:41,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:48:41" (2/2) ... [2024-06-27 18:48:41,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ee0a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:41, skipping insertion in model container [2024-06-27 18:48:41,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:48:41" (2/2) ... [2024-06-27 18:48:41,868 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:48:41,951 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:48:41,952 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:48:41,952 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:48:41,952 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] (((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 18:48:41,952 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:48:41,952 INFO L106 edCorrectnessWitness]: ghost_update [L830-L830] multithreaded = 1; [2024-06-27 18:48:41,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:48:42,207 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i[1019,1032] [2024-06-27 18:48:42,400 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:48:42,409 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:48:42,438 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i[1019,1032] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:48:42,505 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:48:42,537 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:48:42,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42 WrapperNode [2024-06-27 18:48:42,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:48:42,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:48:42,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:48:42,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:48:42,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,594 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 18:48:42,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:48:42,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:48:42,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:48:42,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:48:42,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,629 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]. [2024-06-27 18:48:42,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:48:42,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:48:42,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:48:42,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:48:42,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (1/1) ... [2024-06-27 18:48:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:48:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:48:42,681 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) [2024-06-27 18:48:42,702 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 [2024-06-27 18:48:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:48:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:48:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:48:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:48:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:48:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:48:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:48:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:48:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:48:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:48:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:48:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:48:42,718 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:48:42,819 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:48:42,822 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:48:43,144 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:48:43,144 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:48:43,322 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:48:43,325 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:48:43,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:48:43 BoogieIcfgContainer [2024-06-27 18:48:43,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:48:43,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:48:43,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:48:43,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:48:43,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:48:40" (1/4) ... [2024-06-27 18:48:43,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a49b007 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:48:43, skipping insertion in model container [2024-06-27 18:48:43,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:48:41" (2/4) ... [2024-06-27 18:48:43,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a49b007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:48:43, skipping insertion in model container [2024-06-27 18:48:43,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:48:42" (3/4) ... [2024-06-27 18:48:43,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a49b007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:48:43, skipping insertion in model container [2024-06-27 18:48:43,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:48:43" (4/4) ... [2024-06-27 18:48:43,335 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-27 18:48:43,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:48:43,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:48:43,349 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:48:43,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:48:43,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:48:43,448 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:48:43,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:48:43,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:48:43,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:48:43,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:48:43,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:48:43,474 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;@692e9267, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:48:43,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:48:43,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:48:43,479 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:48:43,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:48:43,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:43,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:48:43,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:43,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 345034173, now seen corresponding path program 1 times [2024-06-27 18:48:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225213845] [2024-06-27 18:48:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225213845] [2024-06-27 18:48:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225213845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:44,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:44,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:48:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548942664] [2024-06-27 18:48:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:44,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:48:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:48:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:48:44,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 18:48:44,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:44,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:44,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 18:48:44,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:44,717 INFO L124 PetriNetUnfolderBase]: 2396/3521 cut-off events. [2024-06-27 18:48:44,718 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 18:48:44,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7091 conditions, 3521 events. 2396/3521 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19186 event pairs, 986 based on Foata normal form. 142/3471 useless extension candidates. Maximal degree in co-relation 7079. Up to 3464 conditions per place. [2024-06-27 18:48:44,737 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:48:44,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 221 flow [2024-06-27 18:48:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:48:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:48:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 18:48:44,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7101449275362319 [2024-06-27 18:48:44,749 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 98 transitions. [2024-06-27 18:48:44,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 221 flow [2024-06-27 18:48:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:48:44,756 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:48:44,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:48:44,760 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:48:44,760 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:48:44,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:44,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:44,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:44,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:48:44,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:44,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1056695211, now seen corresponding path program 1 times [2024-06-27 18:48:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827740796] [2024-06-27 18:48:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827740796] [2024-06-27 18:48:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827740796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:44,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:48:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55765125] [2024-06-27 18:48:44,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:48:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:48:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:48:44,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-06-27 18:48:44,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:44,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:44,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-06-27 18:48:44,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:45,069 INFO L124 PetriNetUnfolderBase]: 735/1552 cut-off events. [2024-06-27 18:48:45,069 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-06-27 18:48:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1552 events. 735/1552 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10525 event pairs, 282 based on Foata normal form. 0/1461 useless extension candidates. Maximal degree in co-relation 2919. Up to 948 conditions per place. [2024-06-27 18:48:45,077 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-06-27 18:48:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 210 flow [2024-06-27 18:48:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:48:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:48:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-27 18:48:45,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-06-27 18:48:45,080 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 3 states and 105 transitions. [2024-06-27 18:48:45,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 210 flow [2024-06-27 18:48:45,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:48:45,083 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 120 flow [2024-06-27 18:48:45,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 18:48:45,085 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:48:45,085 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 120 flow [2024-06-27 18:48:45,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:45,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:45,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:45,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:48:45,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash 847017515, now seen corresponding path program 1 times [2024-06-27 18:48:45,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:45,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551052027] [2024-06-27 18:48:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:45,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:46,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:46,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551052027] [2024-06-27 18:48:46,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551052027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:46,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:46,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:48:46,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273116741] [2024-06-27 18:48:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:46,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:48:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:48:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:48:46,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 18:48:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:46,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:46,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 18:48:46,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:46,569 INFO L124 PetriNetUnfolderBase]: 2591/4379 cut-off events. [2024-06-27 18:48:46,569 INFO L125 PetriNetUnfolderBase]: For 1012/1026 co-relation queries the response was YES. [2024-06-27 18:48:46,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9204 conditions, 4379 events. 2591/4379 cut-off events. For 1012/1026 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27472 event pairs, 1277 based on Foata normal form. 13/4240 useless extension candidates. Maximal degree in co-relation 9191. Up to 3663 conditions per place. [2024-06-27 18:48:46,587 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 46 selfloop transitions, 6 changer transitions 3/67 dead transitions. [2024-06-27 18:48:46,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 286 flow [2024-06-27 18:48:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:48:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:48:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 18:48:46,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 18:48:46,589 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 120 flow. Second operand 4 states and 118 transitions. [2024-06-27 18:48:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 286 flow [2024-06-27 18:48:46,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:46,591 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 139 flow [2024-06-27 18:48:46,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-27 18:48:46,592 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-06-27 18:48:46,592 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 139 flow [2024-06-27 18:48:46,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:46,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:46,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:48:46,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:46,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1871557810, now seen corresponding path program 1 times [2024-06-27 18:48:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786811296] [2024-06-27 18:48:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786811296] [2024-06-27 18:48:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786811296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:47,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:47,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:48:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686222851] [2024-06-27 18:48:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:47,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:48:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:48:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:48:47,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:48:47,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2024-06-27 18:48:47,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:47,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:48:47,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:47,498 INFO L124 PetriNetUnfolderBase]: 2049/3483 cut-off events. [2024-06-27 18:48:47,498 INFO L125 PetriNetUnfolderBase]: For 1340/1344 co-relation queries the response was YES. [2024-06-27 18:48:47,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 3483 events. 2049/3483 cut-off events. For 1340/1344 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21498 event pairs, 973 based on Foata normal form. 6/3365 useless extension candidates. Maximal degree in co-relation 7727. Up to 2957 conditions per place. [2024-06-27 18:48:47,513 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 49 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 18:48:47,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 325 flow [2024-06-27 18:48:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:48:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:48:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:48:47,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:48:47,516 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 139 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:48:47,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 325 flow [2024-06-27 18:48:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:47,519 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 195 flow [2024-06-27 18:48:47,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:48:47,521 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 18:48:47,521 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 195 flow [2024-06-27 18:48:47,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2024-06-27 18:48:47,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:47,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:47,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:48:47,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:47,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2111248669, now seen corresponding path program 1 times [2024-06-27 18:48:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360626260] [2024-06-27 18:48:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360626260] [2024-06-27 18:48:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360626260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:48,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:48:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590371915] [2024-06-27 18:48:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:48:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:48:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:48:48,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:48,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-27 18:48:48,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:48,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:48,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:48,659 INFO L124 PetriNetUnfolderBase]: 3144/5263 cut-off events. [2024-06-27 18:48:48,659 INFO L125 PetriNetUnfolderBase]: For 3451/3451 co-relation queries the response was YES. [2024-06-27 18:48:48,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 5263 events. 3144/5263 cut-off events. For 3451/3451 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33124 event pairs, 1394 based on Foata normal form. 2/5082 useless extension candidates. Maximal degree in co-relation 12844. Up to 4500 conditions per place. [2024-06-27 18:48:48,692 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 65 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 18:48:48,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 443 flow [2024-06-27 18:48:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:48:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:48:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:48:48,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-27 18:48:48,694 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 195 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:48:48,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 443 flow [2024-06-27 18:48:48,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 426 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:48,698 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 263 flow [2024-06-27 18:48:48,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 18:48:48,699 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 18:48:48,699 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 263 flow [2024-06-27 18:48:48,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-27 18:48:48,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:48,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:48,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:48:48,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:48,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -774847233, now seen corresponding path program 1 times [2024-06-27 18:48:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923304659] [2024-06-27 18:48:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:48,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923304659] [2024-06-27 18:48:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923304659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:49,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:48:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706987197] [2024-06-27 18:48:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:48:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:48:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:48:49,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:49,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:49,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:49,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:49,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:49,958 INFO L124 PetriNetUnfolderBase]: 3144/5257 cut-off events. [2024-06-27 18:48:49,958 INFO L125 PetriNetUnfolderBase]: For 4757/4757 co-relation queries the response was YES. [2024-06-27 18:48:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13747 conditions, 5257 events. 3144/5257 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33124 event pairs, 1355 based on Foata normal form. 2/5078 useless extension candidates. Maximal degree in co-relation 13725. Up to 4483 conditions per place. [2024-06-27 18:48:49,982 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 73 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-27 18:48:49,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 531 flow [2024-06-27 18:48:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:48:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:48:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:48:49,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 18:48:49,984 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 263 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:48:49,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 531 flow [2024-06-27 18:48:49,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:48:49,988 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 315 flow [2024-06-27 18:48:49,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 18:48:49,989 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 18:48:49,989 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 315 flow [2024-06-27 18:48:49,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:49,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:49,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:48:49,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:49,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1863814521, now seen corresponding path program 1 times [2024-06-27 18:48:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155820143] [2024-06-27 18:48:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:50,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155820143] [2024-06-27 18:48:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155820143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:50,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:48:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68581101] [2024-06-27 18:48:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:50,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:48:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:48:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:48:50,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:48:50,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:50,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:50,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:48:50,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:51,267 INFO L124 PetriNetUnfolderBase]: 3070/5087 cut-off events. [2024-06-27 18:48:51,267 INFO L125 PetriNetUnfolderBase]: For 7039/7091 co-relation queries the response was YES. [2024-06-27 18:48:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14468 conditions, 5087 events. 3070/5087 cut-off events. For 7039/7091 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 31796 event pairs, 1127 based on Foata normal form. 20/4854 useless extension candidates. Maximal degree in co-relation 14443. Up to 4229 conditions per place. [2024-06-27 18:48:51,288 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 59 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-27 18:48:51,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 567 flow [2024-06-27 18:48:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:48:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:48:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 18:48:51,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2024-06-27 18:48:51,290 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 315 flow. Second operand 5 states and 124 transitions. [2024-06-27 18:48:51,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 567 flow [2024-06-27 18:48:51,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 537 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:48:51,295 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 399 flow [2024-06-27 18:48:51,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-27 18:48:51,296 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-27 18:48:51,296 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 399 flow [2024-06-27 18:48:51,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:51,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:51,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:48:51,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:51,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1259023204, now seen corresponding path program 1 times [2024-06-27 18:48:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499971661] [2024-06-27 18:48:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:51,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:51,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499971661] [2024-06-27 18:48:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499971661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:48:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148964429] [2024-06-27 18:48:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:51,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:48:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:48:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:48:52,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:52,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 399 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:52,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:52,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:52,829 INFO L124 PetriNetUnfolderBase]: 3709/6105 cut-off events. [2024-06-27 18:48:52,829 INFO L125 PetriNetUnfolderBase]: For 10538/10540 co-relation queries the response was YES. [2024-06-27 18:48:52,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18626 conditions, 6105 events. 3709/6105 cut-off events. For 10538/10540 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38368 event pairs, 1142 based on Foata normal form. 15/5915 useless extension candidates. Maximal degree in co-relation 18599. Up to 4778 conditions per place. [2024-06-27 18:48:52,863 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 85 selfloop transitions, 33 changer transitions 0/127 dead transitions. [2024-06-27 18:48:52,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 874 flow [2024-06-27 18:48:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:48:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:48:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:48:52,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 18:48:52,864 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 399 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:48:52,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 874 flow [2024-06-27 18:48:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 127 transitions, 827 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:52,873 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 604 flow [2024-06-27 18:48:52,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2024-06-27 18:48:52,876 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-06-27 18:48:52,876 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 604 flow [2024-06-27 18:48:52,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:52,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:52,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:52,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:48:52,877 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:52,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1019849404, now seen corresponding path program 2 times [2024-06-27 18:48:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970810510] [2024-06-27 18:48:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:52,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:53,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970810510] [2024-06-27 18:48:53,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970810510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:53,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:48:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216557438] [2024-06-27 18:48:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:53,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:48:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:48:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:48:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:54,223 INFO L124 PetriNetUnfolderBase]: 3788/6233 cut-off events. [2024-06-27 18:48:54,223 INFO L125 PetriNetUnfolderBase]: For 15179/15181 co-relation queries the response was YES. [2024-06-27 18:48:54,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21876 conditions, 6233 events. 3788/6233 cut-off events. For 15179/15181 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 38974 event pairs, 1351 based on Foata normal form. 6/6031 useless extension candidates. Maximal degree in co-relation 21845. Up to 5168 conditions per place. [2024-06-27 18:48:54,259 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 108 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-27 18:48:54,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 146 transitions, 1174 flow [2024-06-27 18:48:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:48:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:48:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:48:54,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:48:54,260 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 604 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:48:54,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 146 transitions, 1174 flow [2024-06-27 18:48:54,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 146 transitions, 1132 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:48:54,335 INFO L231 Difference]: Finished difference. Result has 84 places, 108 transitions, 838 flow [2024-06-27 18:48:54,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=838, PETRI_PLACES=84, PETRI_TRANSITIONS=108} [2024-06-27 18:48:54,335 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-27 18:48:54,336 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 108 transitions, 838 flow [2024-06-27 18:48:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:54,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:54,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:48:54,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:54,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1685639324, now seen corresponding path program 3 times [2024-06-27 18:48:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652342285] [2024-06-27 18:48:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652342285] [2024-06-27 18:48:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652342285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:48:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762553490] [2024-06-27 18:48:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:54,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:48:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:48:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:48:55,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:55,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 108 transitions, 838 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:55,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:55,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:55,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:55,854 INFO L124 PetriNetUnfolderBase]: 4082/6631 cut-off events. [2024-06-27 18:48:55,854 INFO L125 PetriNetUnfolderBase]: For 20390/20397 co-relation queries the response was YES. [2024-06-27 18:48:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24825 conditions, 6631 events. 4082/6631 cut-off events. For 20390/20397 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 41267 event pairs, 1312 based on Foata normal form. 16/6435 useless extension candidates. Maximal degree in co-relation 24789. Up to 5308 conditions per place. [2024-06-27 18:48:55,890 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 119 selfloop transitions, 38 changer transitions 0/166 dead transitions. [2024-06-27 18:48:55,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 166 transitions, 1413 flow [2024-06-27 18:48:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:48:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:48:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:48:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:48:55,892 INFO L175 Difference]: Start difference. First operand has 84 places, 108 transitions, 838 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:48:55,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 166 transitions, 1413 flow [2024-06-27 18:48:55,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 166 transitions, 1367 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 18:48:55,920 INFO L231 Difference]: Finished difference. Result has 93 places, 121 transitions, 1019 flow [2024-06-27 18:48:55,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1019, PETRI_PLACES=93, PETRI_TRANSITIONS=121} [2024-06-27 18:48:55,921 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-06-27 18:48:55,921 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 121 transitions, 1019 flow [2024-06-27 18:48:55,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:55,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:55,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:55,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:48:55,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:55,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1749540980, now seen corresponding path program 1 times [2024-06-27 18:48:55,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:55,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349145694] [2024-06-27 18:48:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349145694] [2024-06-27 18:48:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349145694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:48:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705774401] [2024-06-27 18:48:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:56,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:48:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:48:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:48:56,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:56,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 121 transitions, 1019 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:48:56,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:56,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:56,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:57,574 INFO L124 PetriNetUnfolderBase]: 4082/6690 cut-off events. [2024-06-27 18:48:57,574 INFO L125 PetriNetUnfolderBase]: For 26632/26632 co-relation queries the response was YES. [2024-06-27 18:48:57,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26967 conditions, 6690 events. 4082/6690 cut-off events. For 26632/26632 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42165 event pairs, 1449 based on Foata normal form. 4/6476 useless extension candidates. Maximal degree in co-relation 26926. Up to 5726 conditions per place. [2024-06-27 18:48:57,619 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 139 selfloop transitions, 17 changer transitions 0/165 dead transitions. [2024-06-27 18:48:57,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1473 flow [2024-06-27 18:48:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:48:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:48:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:48:57,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:48:57,621 INFO L175 Difference]: Start difference. First operand has 93 places, 121 transitions, 1019 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:48:57,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1473 flow [2024-06-27 18:48:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 165 transitions, 1397 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:48:57,662 INFO L231 Difference]: Finished difference. Result has 98 places, 123 transitions, 1010 flow [2024-06-27 18:48:57,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1010, PETRI_PLACES=98, PETRI_TRANSITIONS=123} [2024-06-27 18:48:57,662 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 18:48:57,663 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 123 transitions, 1010 flow [2024-06-27 18:48:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:48:57,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:57,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:48:57,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:57,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:57,664 INFO L85 PathProgramCache]: Analyzing trace with hash -943290984, now seen corresponding path program 1 times [2024-06-27 18:48:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:57,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827945921] [2024-06-27 18:48:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:57,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:58,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827945921] [2024-06-27 18:48:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827945921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:58,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:58,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:48:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036965748] [2024-06-27 18:48:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:48:58,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:48:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:48:58,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:48:58,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 1010 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:48:58,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:58,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:48:58,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:59,456 INFO L124 PetriNetUnfolderBase]: 4249/6834 cut-off events. [2024-06-27 18:48:59,456 INFO L125 PetriNetUnfolderBase]: For 29226/29226 co-relation queries the response was YES. [2024-06-27 18:48:59,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28235 conditions, 6834 events. 4249/6834 cut-off events. For 29226/29226 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42252 event pairs, 1202 based on Foata normal form. 5/6628 useless extension candidates. Maximal degree in co-relation 28192. Up to 5331 conditions per place. [2024-06-27 18:48:59,494 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 109 selfloop transitions, 58 changer transitions 0/176 dead transitions. [2024-06-27 18:48:59,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 176 transitions, 1656 flow [2024-06-27 18:48:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:48:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:48:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:48:59,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 18:48:59,495 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 1010 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:48:59,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 176 transitions, 1656 flow [2024-06-27 18:48:59,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 1607 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:48:59,527 INFO L231 Difference]: Finished difference. Result has 101 places, 139 transitions, 1314 flow [2024-06-27 18:48:59,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1314, PETRI_PLACES=101, PETRI_TRANSITIONS=139} [2024-06-27 18:48:59,528 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-27 18:48:59,528 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 139 transitions, 1314 flow [2024-06-27 18:48:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:48:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:59,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:48:59,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:48:59,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 624365726, now seen corresponding path program 1 times [2024-06-27 18:48:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881475158] [2024-06-27 18:48:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:00,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:00,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881475158] [2024-06-27 18:49:00,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881475158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:00,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832357887] [2024-06-27 18:49:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:00,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:00,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:00,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:00,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:00,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 139 transitions, 1314 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:00,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:00,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:00,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:01,337 INFO L124 PetriNetUnfolderBase]: 4557/7094 cut-off events. [2024-06-27 18:49:01,337 INFO L125 PetriNetUnfolderBase]: For 41869/41876 co-relation queries the response was YES. [2024-06-27 18:49:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33574 conditions, 7094 events. 4557/7094 cut-off events. For 41869/41876 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 42313 event pairs, 1213 based on Foata normal form. 14/6966 useless extension candidates. Maximal degree in co-relation 33528. Up to 5821 conditions per place. [2024-06-27 18:49:01,381 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 157 selfloop transitions, 59 changer transitions 0/225 dead transitions. [2024-06-27 18:49:01,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 225 transitions, 2403 flow [2024-06-27 18:49:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:49:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:49:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:49:01,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-27 18:49:01,383 INFO L175 Difference]: Start difference. First operand has 101 places, 139 transitions, 1314 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:49:01,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 225 transitions, 2403 flow [2024-06-27 18:49:01,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 225 transitions, 2355 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:01,441 INFO L231 Difference]: Finished difference. Result has 111 places, 177 transitions, 1940 flow [2024-06-27 18:49:01,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1940, PETRI_PLACES=111, PETRI_TRANSITIONS=177} [2024-06-27 18:49:01,442 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-06-27 18:49:01,442 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 177 transitions, 1940 flow [2024-06-27 18:49:01,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:01,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:01,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:01,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:49:01,443 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:01,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1599110592, now seen corresponding path program 2 times [2024-06-27 18:49:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613993169] [2024-06-27 18:49:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613993169] [2024-06-27 18:49:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613993169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:02,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579226705] [2024-06-27 18:49:02,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:02,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:02,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:02,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 177 transitions, 1940 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:02,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:02,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:02,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:03,328 INFO L124 PetriNetUnfolderBase]: 4585/7242 cut-off events. [2024-06-27 18:49:03,329 INFO L125 PetriNetUnfolderBase]: For 54034/54044 co-relation queries the response was YES. [2024-06-27 18:49:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37602 conditions, 7242 events. 4585/7242 cut-off events. For 54034/54044 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 44061 event pairs, 1273 based on Foata normal form. 10/7089 useless extension candidates. Maximal degree in co-relation 37550. Up to 6316 conditions per place. [2024-06-27 18:49:03,383 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 193 selfloop transitions, 44 changer transitions 0/246 dead transitions. [2024-06-27 18:49:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 246 transitions, 2862 flow [2024-06-27 18:49:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:49:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:49:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:49:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 18:49:03,385 INFO L175 Difference]: Start difference. First operand has 111 places, 177 transitions, 1940 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:49:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 246 transitions, 2862 flow [2024-06-27 18:49:03,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 246 transitions, 2766 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:03,473 INFO L231 Difference]: Finished difference. Result has 122 places, 202 transitions, 2324 flow [2024-06-27 18:49:03,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2324, PETRI_PLACES=122, PETRI_TRANSITIONS=202} [2024-06-27 18:49:03,473 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-06-27 18:49:03,473 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 202 transitions, 2324 flow [2024-06-27 18:49:03,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:03,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:03,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:03,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:49:03,474 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:03,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1607384802, now seen corresponding path program 3 times [2024-06-27 18:49:03,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:03,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774348268] [2024-06-27 18:49:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774348268] [2024-06-27 18:49:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774348268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:04,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:04,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:04,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997835332] [2024-06-27 18:49:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:04,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:04,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:04,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:04,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:04,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:04,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 202 transitions, 2324 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:04,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:04,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:04,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:05,398 INFO L124 PetriNetUnfolderBase]: 4741/7583 cut-off events. [2024-06-27 18:49:05,399 INFO L125 PetriNetUnfolderBase]: For 63747/63757 co-relation queries the response was YES. [2024-06-27 18:49:05,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40490 conditions, 7583 events. 4741/7583 cut-off events. For 63747/63757 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 47354 event pairs, 1293 based on Foata normal form. 18/7381 useless extension candidates. Maximal degree in co-relation 40431. Up to 6091 conditions per place. [2024-06-27 18:49:05,459 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 208 selfloop transitions, 49 changer transitions 0/266 dead transitions. [2024-06-27 18:49:05,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 266 transitions, 3193 flow [2024-06-27 18:49:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:49:05,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-27 18:49:05,460 INFO L175 Difference]: Start difference. First operand has 122 places, 202 transitions, 2324 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:49:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 266 transitions, 3193 flow [2024-06-27 18:49:05,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 266 transitions, 3113 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:05,566 INFO L231 Difference]: Finished difference. Result has 130 places, 208 transitions, 2449 flow [2024-06-27 18:49:05,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2449, PETRI_PLACES=130, PETRI_TRANSITIONS=208} [2024-06-27 18:49:05,566 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-27 18:49:05,567 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 208 transitions, 2449 flow [2024-06-27 18:49:05,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:05,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:05,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:49:05,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:05,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1598813922, now seen corresponding path program 4 times [2024-06-27 18:49:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250374758] [2024-06-27 18:49:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250374758] [2024-06-27 18:49:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250374758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:06,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474555124] [2024-06-27 18:49:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:06,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:06,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 208 transitions, 2449 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:06,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:06,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:06,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:07,603 INFO L124 PetriNetUnfolderBase]: 4802/7740 cut-off events. [2024-06-27 18:49:07,604 INFO L125 PetriNetUnfolderBase]: For 72808/72818 co-relation queries the response was YES. [2024-06-27 18:49:07,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43251 conditions, 7740 events. 4802/7740 cut-off events. For 72808/72818 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 48784 event pairs, 1364 based on Foata normal form. 12/7519 useless extension candidates. Maximal degree in co-relation 43189. Up to 6420 conditions per place. [2024-06-27 18:49:07,655 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 212 selfloop transitions, 59 changer transitions 0/280 dead transitions. [2024-06-27 18:49:07,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 280 transitions, 3449 flow [2024-06-27 18:49:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:49:07,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:49:07,661 INFO L175 Difference]: Start difference. First operand has 130 places, 208 transitions, 2449 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:49:07,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 280 transitions, 3449 flow [2024-06-27 18:49:07,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 280 transitions, 3269 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:07,771 INFO L231 Difference]: Finished difference. Result has 133 places, 224 transitions, 2640 flow [2024-06-27 18:49:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2640, PETRI_PLACES=133, PETRI_TRANSITIONS=224} [2024-06-27 18:49:07,772 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:49:07,772 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 224 transitions, 2640 flow [2024-06-27 18:49:07,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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) [2024-06-27 18:49:07,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:07,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:07,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:49:07,788 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:07,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1158710787, now seen corresponding path program 1 times [2024-06-27 18:49:07,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:07,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52062043] [2024-06-27 18:49:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52062043] [2024-06-27 18:49:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52062043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141948759] [2024-06-27 18:49:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:08,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:08,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 224 transitions, 2640 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:08,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:08,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:08,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:09,546 INFO L124 PetriNetUnfolderBase]: 4809/7809 cut-off events. [2024-06-27 18:49:09,546 INFO L125 PetriNetUnfolderBase]: For 79809/79809 co-relation queries the response was YES. [2024-06-27 18:49:09,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43953 conditions, 7809 events. 4809/7809 cut-off events. For 79809/79809 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50109 event pairs, 1359 based on Foata normal form. 6/7583 useless extension candidates. Maximal degree in co-relation 43889. Up to 6634 conditions per place. [2024-06-27 18:49:09,606 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 210 selfloop transitions, 25 changer transitions 0/244 dead transitions. [2024-06-27 18:49:09,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 244 transitions, 3226 flow [2024-06-27 18:49:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:49:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:49:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:49:09,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-27 18:49:09,607 INFO L175 Difference]: Start difference. First operand has 133 places, 224 transitions, 2640 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:49:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 244 transitions, 3226 flow [2024-06-27 18:49:09,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 244 transitions, 3108 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:09,730 INFO L231 Difference]: Finished difference. Result has 134 places, 227 transitions, 2636 flow [2024-06-27 18:49:09,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2636, PETRI_PLACES=134, PETRI_TRANSITIONS=227} [2024-06-27 18:49:09,730 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-06-27 18:49:09,730 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 227 transitions, 2636 flow [2024-06-27 18:49:09,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:09,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:09,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:09,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:49:09,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:09,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash 588512454, now seen corresponding path program 1 times [2024-06-27 18:49:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:09,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102485930] [2024-06-27 18:49:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102485930] [2024-06-27 18:49:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102485930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:10,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790784957] [2024-06-27 18:49:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:10,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:10,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:49:10,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 227 transitions, 2636 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:10,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:10,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:49:10,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:11,710 INFO L124 PetriNetUnfolderBase]: 4809/7770 cut-off events. [2024-06-27 18:49:11,710 INFO L125 PetriNetUnfolderBase]: For 83785/84081 co-relation queries the response was YES. [2024-06-27 18:49:11,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44484 conditions, 7770 events. 4809/7770 cut-off events. For 83785/84081 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 49644 event pairs, 1074 based on Foata normal form. 70/7499 useless extension candidates. Maximal degree in co-relation 44418. Up to 6480 conditions per place. [2024-06-27 18:49:11,775 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 198 selfloop transitions, 18 changer transitions 0/257 dead transitions. [2024-06-27 18:49:11,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 257 transitions, 3186 flow [2024-06-27 18:49:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:11,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:49:11,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-27 18:49:11,777 INFO L175 Difference]: Start difference. First operand has 134 places, 227 transitions, 2636 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:49:11,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 257 transitions, 3186 flow [2024-06-27 18:49:11,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 257 transitions, 3128 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:11,922 INFO L231 Difference]: Finished difference. Result has 138 places, 232 transitions, 2687 flow [2024-06-27 18:49:11,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2687, PETRI_PLACES=138, PETRI_TRANSITIONS=232} [2024-06-27 18:49:11,922 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 18:49:11,922 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 232 transitions, 2687 flow [2024-06-27 18:49:11,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:11,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:11,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:11,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:49:11,923 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:11,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1531012010, now seen corresponding path program 2 times [2024-06-27 18:49:11,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:11,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888953396] [2024-06-27 18:49:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888953396] [2024-06-27 18:49:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888953396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280826700] [2024-06-27 18:49:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:12,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:49:12,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 232 transitions, 2687 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:12,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:12,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:49:12,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:13,746 INFO L124 PetriNetUnfolderBase]: 4784/7315 cut-off events. [2024-06-27 18:49:13,746 INFO L125 PetriNetUnfolderBase]: For 85212/85382 co-relation queries the response was YES. [2024-06-27 18:49:13,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44562 conditions, 7315 events. 4784/7315 cut-off events. For 85212/85382 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 42908 event pairs, 1015 based on Foata normal form. 34/7132 useless extension candidates. Maximal degree in co-relation 44494. Up to 6199 conditions per place. [2024-06-27 18:49:13,808 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 184 selfloop transitions, 44 changer transitions 0/269 dead transitions. [2024-06-27 18:49:13,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 269 transitions, 3389 flow [2024-06-27 18:49:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:49:13,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398550724637681 [2024-06-27 18:49:13,811 INFO L175 Difference]: Start difference. First operand has 138 places, 232 transitions, 2687 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:49:13,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 269 transitions, 3389 flow [2024-06-27 18:49:14,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 269 transitions, 3332 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:14,082 INFO L231 Difference]: Finished difference. Result has 142 places, 238 transitions, 2884 flow [2024-06-27 18:49:14,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2884, PETRI_PLACES=142, PETRI_TRANSITIONS=238} [2024-06-27 18:49:14,083 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-27 18:49:14,083 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 238 transitions, 2884 flow [2024-06-27 18:49:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:14,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:14,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:49:14,084 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:14,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1281667292, now seen corresponding path program 1 times [2024-06-27 18:49:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:14,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453188394] [2024-06-27 18:49:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:14,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:15,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453188394] [2024-06-27 18:49:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453188394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:15,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:15,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755393368] [2024-06-27 18:49:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:15,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:15,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 238 transitions, 2884 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:15,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:15,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:15,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:16,859 INFO L124 PetriNetUnfolderBase]: 5227/8268 cut-off events. [2024-06-27 18:49:16,859 INFO L125 PetriNetUnfolderBase]: For 103869/103869 co-relation queries the response was YES. [2024-06-27 18:49:16,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50348 conditions, 8268 events. 5227/8268 cut-off events. For 103869/103869 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 51799 event pairs, 1006 based on Foata normal form. 5/8044 useless extension candidates. Maximal degree in co-relation 50278. Up to 6447 conditions per place. [2024-06-27 18:49:16,940 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 222 selfloop transitions, 116 changer transitions 0/347 dead transitions. [2024-06-27 18:49:16,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 347 transitions, 4716 flow [2024-06-27 18:49:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:49:16,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531400966183575 [2024-06-27 18:49:16,942 INFO L175 Difference]: Start difference. First operand has 142 places, 238 transitions, 2884 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:49:16,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 347 transitions, 4716 flow [2024-06-27 18:49:17,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 347 transitions, 4630 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:17,186 INFO L231 Difference]: Finished difference. Result has 152 places, 295 transitions, 4133 flow [2024-06-27 18:49:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4133, PETRI_PLACES=152, PETRI_TRANSITIONS=295} [2024-06-27 18:49:17,187 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:49:17,187 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 295 transitions, 4133 flow [2024-06-27 18:49:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:17,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:17,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:17,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:49:17,187 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:17,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2119707076, now seen corresponding path program 2 times [2024-06-27 18:49:17,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:17,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107140288] [2024-06-27 18:49:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107140288] [2024-06-27 18:49:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107140288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599730509] [2024-06-27 18:49:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:18,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:18,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 295 transitions, 4133 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:18,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:18,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:18,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:19,887 INFO L124 PetriNetUnfolderBase]: 5383/8580 cut-off events. [2024-06-27 18:49:19,887 INFO L125 PetriNetUnfolderBase]: For 121666/121676 co-relation queries the response was YES. [2024-06-27 18:49:19,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55744 conditions, 8580 events. 5383/8580 cut-off events. For 121666/121676 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 54684 event pairs, 1194 based on Foata normal form. 13/8362 useless extension candidates. Maximal degree in co-relation 55669. Up to 6990 conditions per place. [2024-06-27 18:49:19,967 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 292 selfloop transitions, 64 changer transitions 0/365 dead transitions. [2024-06-27 18:49:19,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 365 transitions, 5377 flow [2024-06-27 18:49:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:49:19,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-27 18:49:19,970 INFO L175 Difference]: Start difference. First operand has 152 places, 295 transitions, 4133 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:49:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 365 transitions, 5377 flow [2024-06-27 18:49:20,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 365 transitions, 5211 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:20,321 INFO L231 Difference]: Finished difference. Result has 160 places, 313 transitions, 4435 flow [2024-06-27 18:49:20,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4435, PETRI_PLACES=160, PETRI_TRANSITIONS=313} [2024-06-27 18:49:20,328 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-27 18:49:20,328 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 313 transitions, 4435 flow [2024-06-27 18:49:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:20,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:20,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:49:20,329 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:20,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1259441444, now seen corresponding path program 3 times [2024-06-27 18:49:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954814267] [2024-06-27 18:49:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954814267] [2024-06-27 18:49:21,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954814267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:21,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:21,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859192141] [2024-06-27 18:49:21,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:21,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:21,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 313 transitions, 4435 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:21,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:21,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:21,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:23,368 INFO L124 PetriNetUnfolderBase]: 5433/8637 cut-off events. [2024-06-27 18:49:23,369 INFO L125 PetriNetUnfolderBase]: For 131945/131955 co-relation queries the response was YES. [2024-06-27 18:49:23,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57879 conditions, 8637 events. 5433/8637 cut-off events. For 131945/131955 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 54830 event pairs, 1197 based on Foata normal form. 13/8418 useless extension candidates. Maximal degree in co-relation 57800. Up to 7058 conditions per place. [2024-06-27 18:49:23,453 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 290 selfloop transitions, 68 changer transitions 0/367 dead transitions. [2024-06-27 18:49:23,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 367 transitions, 5454 flow [2024-06-27 18:49:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:49:23,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:49:23,455 INFO L175 Difference]: Start difference. First operand has 160 places, 313 transitions, 4435 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:49:23,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 367 transitions, 5454 flow [2024-06-27 18:49:23,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 367 transitions, 5250 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:23,817 INFO L231 Difference]: Finished difference. Result has 165 places, 317 transitions, 4476 flow [2024-06-27 18:49:23,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4476, PETRI_PLACES=165, PETRI_TRANSITIONS=317} [2024-06-27 18:49:23,818 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 18:49:23,818 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 317 transitions, 4476 flow [2024-06-27 18:49:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:23,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:23,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:49:23,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:23,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1259434004, now seen corresponding path program 4 times [2024-06-27 18:49:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:23,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253213270] [2024-06-27 18:49:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253213270] [2024-06-27 18:49:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253213270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:24,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618805664] [2024-06-27 18:49:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:25,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:25,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 317 transitions, 4476 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:25,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:25,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:26,815 INFO L124 PetriNetUnfolderBase]: 5603/8820 cut-off events. [2024-06-27 18:49:26,815 INFO L125 PetriNetUnfolderBase]: For 143275/143275 co-relation queries the response was YES. [2024-06-27 18:49:26,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60206 conditions, 8820 events. 5603/8820 cut-off events. For 143275/143275 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 55456 event pairs, 1142 based on Foata normal form. 5/8606 useless extension candidates. Maximal degree in co-relation 60126. Up to 6819 conditions per place. [2024-06-27 18:49:26,896 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 270 selfloop transitions, 113 changer transitions 0/392 dead transitions. [2024-06-27 18:49:26,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 392 transitions, 5721 flow [2024-06-27 18:49:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:49:26,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:49:26,898 INFO L175 Difference]: Start difference. First operand has 165 places, 317 transitions, 4476 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:49:26,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 392 transitions, 5721 flow [2024-06-27 18:49:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 392 transitions, 5476 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:27,439 INFO L231 Difference]: Finished difference. Result has 169 places, 332 transitions, 4755 flow [2024-06-27 18:49:27,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4755, PETRI_PLACES=169, PETRI_TRANSITIONS=332} [2024-06-27 18:49:27,439 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-27 18:49:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 332 transitions, 4755 flow [2024-06-27 18:49:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:27,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:27,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:49:27,440 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:27,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2119497547, now seen corresponding path program 1 times [2024-06-27 18:49:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007461723] [2024-06-27 18:49:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:27,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:28,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:28,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007461723] [2024-06-27 18:49:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007461723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:28,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:28,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282187459] [2024-06-27 18:49:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:28,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:28,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:28,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 332 transitions, 4755 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:28,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:28,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:30,331 INFO L124 PetriNetUnfolderBase]: 6891/10842 cut-off events. [2024-06-27 18:49:30,331 INFO L125 PetriNetUnfolderBase]: For 218839/218849 co-relation queries the response was YES. [2024-06-27 18:49:30,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74789 conditions, 10842 events. 6891/10842 cut-off events. For 218839/218849 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 71167 event pairs, 1397 based on Foata normal form. 114/10725 useless extension candidates. Maximal degree in co-relation 74708. Up to 7168 conditions per place. [2024-06-27 18:49:30,425 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 294 selfloop transitions, 90 changer transitions 0/393 dead transitions. [2024-06-27 18:49:30,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 393 transitions, 5928 flow [2024-06-27 18:49:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:49:30,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2024-06-27 18:49:30,426 INFO L175 Difference]: Start difference. First operand has 169 places, 332 transitions, 4755 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:49:30,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 393 transitions, 5928 flow [2024-06-27 18:49:30,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 393 transitions, 5628 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:30,819 INFO L231 Difference]: Finished difference. Result has 171 places, 336 transitions, 4764 flow [2024-06-27 18:49:30,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4764, PETRI_PLACES=171, PETRI_TRANSITIONS=336} [2024-06-27 18:49:30,820 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 18:49:30,820 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 336 transitions, 4764 flow [2024-06-27 18:49:30,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:30,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:30,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:49:30,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:30,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash 185390376, now seen corresponding path program 5 times [2024-06-27 18:49:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:30,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641328874] [2024-06-27 18:49:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641328874] [2024-06-27 18:49:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641328874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347436077] [2024-06-27 18:49:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:31,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:31,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 336 transitions, 4764 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:31,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:31,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:31,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:33,619 INFO L124 PetriNetUnfolderBase]: 7099/10906 cut-off events. [2024-06-27 18:49:33,619 INFO L125 PetriNetUnfolderBase]: For 213090/213090 co-relation queries the response was YES. [2024-06-27 18:49:33,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78241 conditions, 10906 events. 7099/10906 cut-off events. For 213090/213090 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 69301 event pairs, 1555 based on Foata normal form. 5/10767 useless extension candidates. Maximal degree in co-relation 78159. Up to 9188 conditions per place. [2024-06-27 18:49:33,732 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 320 selfloop transitions, 103 changer transitions 0/432 dead transitions. [2024-06-27 18:49:33,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 432 transitions, 6691 flow [2024-06-27 18:49:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 18:49:33,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-06-27 18:49:33,733 INFO L175 Difference]: Start difference. First operand has 171 places, 336 transitions, 4764 flow. Second operand 10 states and 252 transitions. [2024-06-27 18:49:33,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 432 transitions, 6691 flow [2024-06-27 18:49:34,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 432 transitions, 6540 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:49:34,228 INFO L231 Difference]: Finished difference. Result has 179 places, 362 transitions, 5573 flow [2024-06-27 18:49:34,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5573, PETRI_PLACES=179, PETRI_TRANSITIONS=362} [2024-06-27 18:49:34,229 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-27 18:49:34,229 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 362 transitions, 5573 flow [2024-06-27 18:49:34,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:34,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:34,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:34,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:49:34,229 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:34,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1976377118, now seen corresponding path program 6 times [2024-06-27 18:49:34,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736756863] [2024-06-27 18:49:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736756863] [2024-06-27 18:49:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736756863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811586547] [2024-06-27 18:49:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:35,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:35,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 362 transitions, 5573 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:35,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:37,240 INFO L124 PetriNetUnfolderBase]: 7122/11172 cut-off events. [2024-06-27 18:49:37,240 INFO L125 PetriNetUnfolderBase]: For 228627/228627 co-relation queries the response was YES. [2024-06-27 18:49:37,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81279 conditions, 11172 events. 7122/11172 cut-off events. For 228627/228627 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 72960 event pairs, 1781 based on Foata normal form. 2/10969 useless extension candidates. Maximal degree in co-relation 81192. Up to 9540 conditions per place. [2024-06-27 18:49:37,372 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 319 selfloop transitions, 141 changer transitions 0/469 dead transitions. [2024-06-27 18:49:37,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 469 transitions, 7876 flow [2024-06-27 18:49:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:49:37,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:49:37,374 INFO L175 Difference]: Start difference. First operand has 179 places, 362 transitions, 5573 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:49:37,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 469 transitions, 7876 flow [2024-06-27 18:49:38,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 469 transitions, 7267 flow, removed 264 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:38,224 INFO L231 Difference]: Finished difference. Result has 190 places, 411 transitions, 6552 flow [2024-06-27 18:49:38,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5111, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6552, PETRI_PLACES=190, PETRI_TRANSITIONS=411} [2024-06-27 18:49:38,225 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 18:49:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 411 transitions, 6552 flow [2024-06-27 18:49:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:38,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:38,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:38,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:49:38,226 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1967180627, now seen corresponding path program 2 times [2024-06-27 18:49:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:38,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934535670] [2024-06-27 18:49:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:39,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934535670] [2024-06-27 18:49:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934535670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114359449] [2024-06-27 18:49:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:39,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:39,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:39,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 411 transitions, 6552 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:39,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:39,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:39,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:41,180 INFO L124 PetriNetUnfolderBase]: 7326/11846 cut-off events. [2024-06-27 18:49:41,180 INFO L125 PetriNetUnfolderBase]: For 265220/265230 co-relation queries the response was YES. [2024-06-27 18:49:41,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86125 conditions, 11846 events. 7326/11846 cut-off events. For 265220/265230 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 81371 event pairs, 2045 based on Foata normal form. 32/11563 useless extension candidates. Maximal degree in co-relation 86031. Up to 9958 conditions per place. [2024-06-27 18:49:41,310 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 411 selfloop transitions, 50 changer transitions 0/470 dead transitions. [2024-06-27 18:49:41,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 470 transitions, 7811 flow [2024-06-27 18:49:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:49:41,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:49:41,312 INFO L175 Difference]: Start difference. First operand has 190 places, 411 transitions, 6552 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:49:41,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 470 transitions, 7811 flow [2024-06-27 18:49:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 470 transitions, 7527 flow, removed 141 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:42,178 INFO L231 Difference]: Finished difference. Result has 198 places, 413 transitions, 6442 flow [2024-06-27 18:49:42,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6442, PETRI_PLACES=198, PETRI_TRANSITIONS=413} [2024-06-27 18:49:42,179 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 18:49:42,179 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 413 transitions, 6442 flow [2024-06-27 18:49:42,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:42,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:42,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:49:42,180 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:42,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:42,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1967180348, now seen corresponding path program 7 times [2024-06-27 18:49:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:42,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832772127] [2024-06-27 18:49:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832772127] [2024-06-27 18:49:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832772127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:42,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228653962] [2024-06-27 18:49:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:43,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:43,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 413 transitions, 6442 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:43,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:43,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:45,133 INFO L124 PetriNetUnfolderBase]: 7326/11867 cut-off events. [2024-06-27 18:49:45,133 INFO L125 PetriNetUnfolderBase]: For 265030/265040 co-relation queries the response was YES. [2024-06-27 18:49:45,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86616 conditions, 11867 events. 7326/11867 cut-off events. For 265030/265040 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 81757 event pairs, 2045 based on Foata normal form. 10/11556 useless extension candidates. Maximal degree in co-relation 86519. Up to 10199 conditions per place. [2024-06-27 18:49:45,289 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 415 selfloop transitions, 52 changer transitions 0/476 dead transitions. [2024-06-27 18:49:45,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 476 transitions, 7678 flow [2024-06-27 18:49:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-27 18:49:45,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152173913043478 [2024-06-27 18:49:45,291 INFO L175 Difference]: Start difference. First operand has 198 places, 413 transitions, 6442 flow. Second operand 10 states and 237 transitions. [2024-06-27 18:49:45,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 476 transitions, 7678 flow [2024-06-27 18:49:46,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 476 transitions, 7502 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:49:46,041 INFO L231 Difference]: Finished difference. Result has 203 places, 417 transitions, 6480 flow [2024-06-27 18:49:46,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6280, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6480, PETRI_PLACES=203, PETRI_TRANSITIONS=417} [2024-06-27 18:49:46,046 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 18:49:46,046 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 417 transitions, 6480 flow [2024-06-27 18:49:46,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:46,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:46,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:49:46,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:46,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1710680117, now seen corresponding path program 3 times [2024-06-27 18:49:46,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:46,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989671954] [2024-06-27 18:49:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:46,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:46,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989671954] [2024-06-27 18:49:46,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989671954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:46,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:46,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499324152] [2024-06-27 18:49:46,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:46,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:46,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:46,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 417 transitions, 6480 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:46,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:46,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:46,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:49,229 INFO L124 PetriNetUnfolderBase]: 8414/13235 cut-off events. [2024-06-27 18:49:49,229 INFO L125 PetriNetUnfolderBase]: For 328281/328291 co-relation queries the response was YES. [2024-06-27 18:49:49,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97880 conditions, 13235 events. 8414/13235 cut-off events. For 328281/328291 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 90390 event pairs, 2136 based on Foata normal form. 100/13077 useless extension candidates. Maximal degree in co-relation 97781. Up to 9990 conditions per place. [2024-06-27 18:49:49,375 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 429 selfloop transitions, 55 changer transitions 0/493 dead transitions. [2024-06-27 18:49:49,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 493 transitions, 8039 flow [2024-06-27 18:49:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:49:49,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:49:49,377 INFO L175 Difference]: Start difference. First operand has 203 places, 417 transitions, 6480 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:49:49,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 493 transitions, 8039 flow [2024-06-27 18:49:50,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 493 transitions, 7877 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:50,544 INFO L231 Difference]: Finished difference. Result has 205 places, 420 transitions, 6545 flow [2024-06-27 18:49:50,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6545, PETRI_PLACES=205, PETRI_TRANSITIONS=420} [2024-06-27 18:49:50,546 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 153 predicate places. [2024-06-27 18:49:50,546 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 420 transitions, 6545 flow [2024-06-27 18:49:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:50,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:50,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:49:50,546 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:50,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1976703827, now seen corresponding path program 4 times [2024-06-27 18:49:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238698818] [2024-06-27 18:49:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238698818] [2024-06-27 18:49:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238698818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:51,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:51,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228844978] [2024-06-27 18:49:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:51,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:51,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 420 transitions, 6545 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:51,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:51,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:51,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:53,913 INFO L124 PetriNetUnfolderBase]: 8459/13527 cut-off events. [2024-06-27 18:49:53,913 INFO L125 PetriNetUnfolderBase]: For 321024/321034 co-relation queries the response was YES. [2024-06-27 18:49:53,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100121 conditions, 13527 events. 8459/13527 cut-off events. For 321024/321034 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 94292 event pairs, 2365 based on Foata normal form. 12/13240 useless extension candidates. Maximal degree in co-relation 100022. Up to 10906 conditions per place. [2024-06-27 18:49:54,045 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 399 selfloop transitions, 77 changer transitions 0/485 dead transitions. [2024-06-27 18:49:54,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 485 transitions, 8044 flow [2024-06-27 18:49:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:49:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:49:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:49:54,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-27 18:49:54,056 INFO L175 Difference]: Start difference. First operand has 205 places, 420 transitions, 6545 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:49:54,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 485 transitions, 8044 flow [2024-06-27 18:49:54,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 485 transitions, 7890 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:54,860 INFO L231 Difference]: Finished difference. Result has 207 places, 426 transitions, 6757 flow [2024-06-27 18:49:54,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6402, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6757, PETRI_PLACES=207, PETRI_TRANSITIONS=426} [2024-06-27 18:49:54,861 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2024-06-27 18:49:54,861 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 426 transitions, 6757 flow [2024-06-27 18:49:54,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:54,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:54,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:54,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:49:54,861 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:54,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1976377397, now seen corresponding path program 5 times [2024-06-27 18:49:54,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396406654] [2024-06-27 18:49:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:54,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:55,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396406654] [2024-06-27 18:49:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396406654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:55,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:55,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:49:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713315265] [2024-06-27 18:49:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:49:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:49:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:49:55,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:55,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 426 transitions, 6757 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:55,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:55,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:55,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:58,500 INFO L124 PetriNetUnfolderBase]: 8451/13578 cut-off events. [2024-06-27 18:49:58,501 INFO L125 PetriNetUnfolderBase]: For 312951/312961 co-relation queries the response was YES. [2024-06-27 18:49:58,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99417 conditions, 13578 events. 8451/13578 cut-off events. For 312951/312961 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 95392 event pairs, 2456 based on Foata normal form. 12/13273 useless extension candidates. Maximal degree in co-relation 99316. Up to 11520 conditions per place. [2024-06-27 18:49:58,648 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 410 selfloop transitions, 71 changer transitions 0/490 dead transitions. [2024-06-27 18:49:58,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 490 transitions, 8015 flow [2024-06-27 18:49:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-27 18:49:58,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-06-27 18:49:58,649 INFO L175 Difference]: Start difference. First operand has 207 places, 426 transitions, 6757 flow. Second operand 10 states and 244 transitions. [2024-06-27 18:49:58,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 490 transitions, 8015 flow [2024-06-27 18:49:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 490 transitions, 7856 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:49:59,436 INFO L231 Difference]: Finished difference. Result has 212 places, 426 transitions, 6753 flow [2024-06-27 18:49:59,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6753, PETRI_PLACES=212, PETRI_TRANSITIONS=426} [2024-06-27 18:49:59,436 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 160 predicate places. [2024-06-27 18:49:59,437 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 426 transitions, 6753 flow [2024-06-27 18:49:59,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:59,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:49:59,437 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:59,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 209328719, now seen corresponding path program 1 times [2024-06-27 18:49:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274710725] [2024-06-27 18:49:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274710725] [2024-06-27 18:50:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274710725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:00,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545779036] [2024-06-27 18:50:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:00,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:00,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 426 transitions, 6753 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:00,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:00,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:00,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:03,099 INFO L124 PetriNetUnfolderBase]: 8935/13999 cut-off events. [2024-06-27 18:50:03,099 INFO L125 PetriNetUnfolderBase]: For 335061/335061 co-relation queries the response was YES. [2024-06-27 18:50:03,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104595 conditions, 13999 events. 8935/13999 cut-off events. For 335061/335061 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 96677 event pairs, 2391 based on Foata normal form. 14/13785 useless extension candidates. Maximal degree in co-relation 104492. Up to 12183 conditions per place. [2024-06-27 18:50:03,277 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 441 selfloop transitions, 36 changer transitions 0/486 dead transitions. [2024-06-27 18:50:03,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 486 transitions, 8287 flow [2024-06-27 18:50:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:50:03,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 18:50:03,279 INFO L175 Difference]: Start difference. First operand has 212 places, 426 transitions, 6753 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:50:03,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 486 transitions, 8287 flow [2024-06-27 18:50:04,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 486 transitions, 8152 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:50:04,575 INFO L231 Difference]: Finished difference. Result has 215 places, 439 transitions, 7017 flow [2024-06-27 18:50:04,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6618, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7017, PETRI_PLACES=215, PETRI_TRANSITIONS=439} [2024-06-27 18:50:04,576 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-06-27 18:50:04,576 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 439 transitions, 7017 flow [2024-06-27 18:50:04,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:04,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:04,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:50:04,577 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1315276355, now seen corresponding path program 2 times [2024-06-27 18:50:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822313820] [2024-06-27 18:50:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:05,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:05,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822313820] [2024-06-27 18:50:05,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822313820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:05,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357032663] [2024-06-27 18:50:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:05,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:05,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:05,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:05,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 439 transitions, 7017 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:05,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:05,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:05,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:08,901 INFO L124 PetriNetUnfolderBase]: 9141/14459 cut-off events. [2024-06-27 18:50:08,901 INFO L125 PetriNetUnfolderBase]: For 367701/367701 co-relation queries the response was YES. [2024-06-27 18:50:08,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109932 conditions, 14459 events. 9141/14459 cut-off events. For 367701/367701 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 100524 event pairs, 2273 based on Foata normal form. 16/14163 useless extension candidates. Maximal degree in co-relation 109825. Up to 11961 conditions per place. [2024-06-27 18:50:09,062 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 395 selfloop transitions, 88 changer transitions 0/492 dead transitions. [2024-06-27 18:50:09,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 492 transitions, 8452 flow [2024-06-27 18:50:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:50:09,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-27 18:50:09,063 INFO L175 Difference]: Start difference. First operand has 215 places, 439 transitions, 7017 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:50:09,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 492 transitions, 8452 flow [2024-06-27 18:50:10,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 492 transitions, 8278 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:10,164 INFO L231 Difference]: Finished difference. Result has 220 places, 445 transitions, 7216 flow [2024-06-27 18:50:10,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6843, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7216, PETRI_PLACES=220, PETRI_TRANSITIONS=445} [2024-06-27 18:50:10,164 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-27 18:50:10,164 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 445 transitions, 7216 flow [2024-06-27 18:50:10,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:10,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:10,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:10,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:50:10,165 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:10,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1315271705, now seen corresponding path program 3 times [2024-06-27 18:50:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588728028] [2024-06-27 18:50:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588728028] [2024-06-27 18:50:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588728028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494072576] [2024-06-27 18:50:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:11,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:11,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:11,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 445 transitions, 7216 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:11,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:11,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:11,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:14,986 INFO L124 PetriNetUnfolderBase]: 9989/15186 cut-off events. [2024-06-27 18:50:14,986 INFO L125 PetriNetUnfolderBase]: For 429737/429737 co-relation queries the response was YES. [2024-06-27 18:50:15,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121817 conditions, 15186 events. 9989/15186 cut-off events. For 429737/429737 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 101442 event pairs, 1967 based on Foata normal form. 20/15073 useless extension candidates. Maximal degree in co-relation 121708. Up to 11606 conditions per place. [2024-06-27 18:50:15,180 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 376 selfloop transitions, 141 changer transitions 0/526 dead transitions. [2024-06-27 18:50:15,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 526 transitions, 9355 flow [2024-06-27 18:50:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:50:15,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 18:50:15,310 INFO L175 Difference]: Start difference. First operand has 220 places, 445 transitions, 7216 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:50:15,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 526 transitions, 9355 flow [2024-06-27 18:50:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 526 transitions, 9133 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:16,578 INFO L231 Difference]: Finished difference. Result has 224 places, 462 transitions, 7917 flow [2024-06-27 18:50:16,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6994, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7917, PETRI_PLACES=224, PETRI_TRANSITIONS=462} [2024-06-27 18:50:16,578 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 18:50:16,579 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 462 transitions, 7917 flow [2024-06-27 18:50:16,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:16,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:16,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:16,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:50:16,579 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:16,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 216917993, now seen corresponding path program 1 times [2024-06-27 18:50:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639052621] [2024-06-27 18:50:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:17,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:17,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639052621] [2024-06-27 18:50:17,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639052621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:17,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:17,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806948548] [2024-06-27 18:50:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:17,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:17,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 462 transitions, 7917 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:17,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:17,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:21,737 INFO L124 PetriNetUnfolderBase]: 11166/16905 cut-off events. [2024-06-27 18:50:21,737 INFO L125 PetriNetUnfolderBase]: For 548048/548048 co-relation queries the response was YES. [2024-06-27 18:50:21,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140105 conditions, 16905 events. 11166/16905 cut-off events. For 548048/548048 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 114037 event pairs, 2165 based on Foata normal form. 75/16864 useless extension candidates. Maximal degree in co-relation 139993. Up to 13269 conditions per place. [2024-06-27 18:50:21,963 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 339 selfloop transitions, 208 changer transitions 0/556 dead transitions. [2024-06-27 18:50:21,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 556 transitions, 10351 flow [2024-06-27 18:50:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:50:21,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772946859903382 [2024-06-27 18:50:21,965 INFO L175 Difference]: Start difference. First operand has 224 places, 462 transitions, 7917 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:50:21,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 556 transitions, 10351 flow [2024-06-27 18:50:23,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 556 transitions, 10201 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:23,774 INFO L231 Difference]: Finished difference. Result has 233 places, 493 transitions, 9369 flow [2024-06-27 18:50:23,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9369, PETRI_PLACES=233, PETRI_TRANSITIONS=493} [2024-06-27 18:50:23,775 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-27 18:50:23,775 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 493 transitions, 9369 flow [2024-06-27 18:50:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:23,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:50:23,776 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:23,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1279921739, now seen corresponding path program 2 times [2024-06-27 18:50:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595567736] [2024-06-27 18:50:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:24,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:24,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595567736] [2024-06-27 18:50:24,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595567736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:24,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:24,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658015018] [2024-06-27 18:50:24,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:24,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:24,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:24,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:24,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:24,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:24,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 493 transitions, 9369 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:24,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:24,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:24,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:29,369 INFO L124 PetriNetUnfolderBase]: 11890/18087 cut-off events. [2024-06-27 18:50:29,370 INFO L125 PetriNetUnfolderBase]: For 638571/638571 co-relation queries the response was YES. [2024-06-27 18:50:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155556 conditions, 18087 events. 11890/18087 cut-off events. For 638571/638571 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 124372 event pairs, 2512 based on Foata normal form. 59/18026 useless extension candidates. Maximal degree in co-relation 155439. Up to 14605 conditions per place. [2024-06-27 18:50:29,587 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 318 selfloop transitions, 261 changer transitions 0/588 dead transitions. [2024-06-27 18:50:29,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 588 transitions, 11826 flow [2024-06-27 18:50:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-27 18:50:29,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2024-06-27 18:50:29,589 INFO L175 Difference]: Start difference. First operand has 233 places, 493 transitions, 9369 flow. Second operand 10 states and 264 transitions. [2024-06-27 18:50:29,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 588 transitions, 11826 flow [2024-06-27 18:50:32,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 588 transitions, 11514 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:32,064 INFO L231 Difference]: Finished difference. Result has 243 places, 515 transitions, 10546 flow [2024-06-27 18:50:32,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9069, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10546, PETRI_PLACES=243, PETRI_TRANSITIONS=515} [2024-06-27 18:50:32,065 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 191 predicate places. [2024-06-27 18:50:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 515 transitions, 10546 flow [2024-06-27 18:50:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:32,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:32,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:32,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:50:32,066 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:32,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1279913369, now seen corresponding path program 3 times [2024-06-27 18:50:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359840382] [2024-06-27 18:50:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:32,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359840382] [2024-06-27 18:50:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359840382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:32,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:32,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243737884] [2024-06-27 18:50:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:33,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:33,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 515 transitions, 10546 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:33,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:33,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:38,533 INFO L124 PetriNetUnfolderBase]: 13341/20480 cut-off events. [2024-06-27 18:50:38,534 INFO L125 PetriNetUnfolderBase]: For 786351/786351 co-relation queries the response was YES. [2024-06-27 18:50:38,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180301 conditions, 20480 events. 13341/20480 cut-off events. For 786351/786351 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 145102 event pairs, 2629 based on Foata normal form. 48/20406 useless extension candidates. Maximal degree in co-relation 180179. Up to 12505 conditions per place. [2024-06-27 18:50:38,777 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 318 selfloop transitions, 274 changer transitions 0/601 dead transitions. [2024-06-27 18:50:38,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 601 transitions, 12766 flow [2024-06-27 18:50:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-27 18:50:38,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847826086956521 [2024-06-27 18:50:38,779 INFO L175 Difference]: Start difference. First operand has 243 places, 515 transitions, 10546 flow. Second operand 10 states and 269 transitions. [2024-06-27 18:50:38,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 601 transitions, 12766 flow [2024-06-27 18:50:42,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 601 transitions, 12295 flow, removed 152 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:42,208 INFO L231 Difference]: Finished difference. Result has 250 places, 521 transitions, 10956 flow [2024-06-27 18:50:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10075, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10956, PETRI_PLACES=250, PETRI_TRANSITIONS=521} [2024-06-27 18:50:42,209 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 198 predicate places. [2024-06-27 18:50:42,209 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 521 transitions, 10956 flow [2024-06-27 18:50:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:42,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:42,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:50:42,210 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:42,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1484797529, now seen corresponding path program 4 times [2024-06-27 18:50:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265266593] [2024-06-27 18:50:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:43,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:43,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265266593] [2024-06-27 18:50:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265266593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:43,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670247404] [2024-06-27 18:50:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:43,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:43,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 521 transitions, 10956 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:43,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:43,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:43,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:48,741 INFO L124 PetriNetUnfolderBase]: 13848/21785 cut-off events. [2024-06-27 18:50:48,742 INFO L125 PetriNetUnfolderBase]: For 812428/812428 co-relation queries the response was YES. [2024-06-27 18:50:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189935 conditions, 21785 events. 13848/21785 cut-off events. For 812428/812428 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 162596 event pairs, 4368 based on Foata normal form. 16/21487 useless extension candidates. Maximal degree in co-relation 189810. Up to 18892 conditions per place. [2024-06-27 18:50:49,006 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 546 selfloop transitions, 70 changer transitions 0/625 dead transitions. [2024-06-27 18:50:49,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 625 transitions, 13354 flow [2024-06-27 18:50:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-27 18:50:49,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612648221343873 [2024-06-27 18:50:49,008 INFO L175 Difference]: Start difference. First operand has 250 places, 521 transitions, 10956 flow. Second operand 11 states and 284 transitions. [2024-06-27 18:50:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 625 transitions, 13354 flow