./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.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/mix056_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.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 18:39:13,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:39:14,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:39:14,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:39:14,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:39:14,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:39:14,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:39:14,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:39:14,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:39:14,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:39:14,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:39:14,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:39:14,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:39:14,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:39:14,043 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:39:14,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:39:14,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:39:14,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:39:14,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:39:14,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:39:14,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:39:14,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:39:14,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:39:14,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:39:14,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:39:14,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:39:14,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:39:14,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:39:14,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:39:14,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:39:14,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:39:14,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:39:14,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:14,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:39:14,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:39:14,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:39:14,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:39:14,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:39:14,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:39:14,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:39:14,054 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:39:14,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:39:14,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:39:14,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:39:14,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:39:14,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:39:14,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:39:14,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:39:14,371 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:39:14,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:15,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:39:15,871 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:39:15,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:15,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b661512f/c9da404613904e67ba6e7232044da62d/FLAGb14ff4b73 [2024-06-27 18:39:15,915 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b661512f/c9da404613904e67ba6e7232044da62d [2024-06-27 18:39:15,918 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:39:15,919 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:39:15,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:39:16,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:39:16,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:39:16,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:16,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:39:16,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:39:16,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:15" (1/2) ... [2024-06-27 18:39:16,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24692cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:16, skipping insertion in model container [2024-06-27 18:39:16,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:15" (1/2) ... [2024-06-27 18:39:16,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36867619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:16, skipping insertion in model container [2024-06-27 18:39:16,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:16" (2/2) ... [2024-06-27 18:39:16,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24692cb6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16, skipping insertion in model container [2024-06-27 18:39:16,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:16" (2/2) ... [2024-06-27 18:39:16,111 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:39:16,198 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:39:16,199 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:16,200 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:16,200 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:16,200 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:39:16,200 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 18:39:16,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:39:16,429 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/mix056_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:39:16,592 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:16,600 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:39:16,631 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/mix056_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:39:16,734 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:16,792 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:39:16,793 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16 WrapperNode [2024-06-27 18:39:16,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:16,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:16,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:39:16,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:39:16,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,843 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2024-06-27 18:39:16,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:16,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:39:16,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:39:16,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:39:16,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,874 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 18:39:16,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:39:16,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:39:16,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:39:16,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:39:16,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (1/1) ... [2024-06-27 18:39:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:16,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:39:16,947 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 18:39:16,996 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 18:39:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:39:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:39:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:39:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:39:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:39:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:39:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:39:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:39:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:39:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:39:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:39:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:39:17,045 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 18:39:17,187 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:39:17,190 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:39:17,553 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:39:17,553 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:39:17,721 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:39:17,721 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:39:17,723 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:17 BoogieIcfgContainer [2024-06-27 18:39:17,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:39:17,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:39:17,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:39:17,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:39:17,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:39:15" (1/4) ... [2024-06-27 18:39:17,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f11e558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:39:17, skipping insertion in model container [2024-06-27 18:39:17,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:16" (2/4) ... [2024-06-27 18:39:17,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f11e558 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:17, skipping insertion in model container [2024-06-27 18:39:17,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:16" (3/4) ... [2024-06-27 18:39:17,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f11e558 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:17, skipping insertion in model container [2024-06-27 18:39:17,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:17" (4/4) ... [2024-06-27 18:39:17,734 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:17,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:39:17,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:39:17,750 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:39:17,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:39:17,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:39:17,866 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:39:17,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:17,871 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 4. Compared 73 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 18:39:17,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:39:17,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:39:17,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:39:17,896 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;@6dcb5776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:39:17,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:39:17,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:39:17,902 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:39:17,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:17,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:17,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:39:17,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:17,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash 350224331, now seen corresponding path program 1 times [2024-06-27 18:39:17,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21511509] [2024-06-27 18:39:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:18,304 INFO 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 18:39:18,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:18,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21511509] [2024-06-27 18:39:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21511509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964591313] [2024-06-27 18:39:18,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:18,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:18,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 18:39:18,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:39:18,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 18:39:18,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:18,757 INFO L124 PetriNetUnfolderBase]: 637/1233 cut-off events. [2024-06-27 18:39:18,757 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-27 18:39:18,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 1233 events. 637/1233 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7848 event pairs, 97 based on Foata normal form. 48/1249 useless extension candidates. Maximal degree in co-relation 2234. Up to 793 conditions per place. [2024-06-27 18:39:18,771 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 33 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2024-06-27 18:39:18,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 203 flow [2024-06-27 18:39:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-27 18:39:18,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7898550724637681 [2024-06-27 18:39:18,787 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 109 transitions. [2024-06-27 18:39:18,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 203 flow [2024-06-27 18:39:18,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:18,796 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 90 flow [2024-06-27 18:39:18,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-27 18:39:18,802 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-06-27 18:39:18,802 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 90 flow [2024-06-27 18:39:18,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:39:18,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:18,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:39:18,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:39:18,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:18,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 350224215, now seen corresponding path program 1 times [2024-06-27 18:39:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213031811] [2024-06-27 18:39:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:19,358 INFO 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 18:39:19,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:19,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213031811] [2024-06-27 18:39:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213031811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:19,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:19,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:19,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968146668] [2024-06-27 18:39:19,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:19,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:19,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:19,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:19,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:19,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:19,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:20,049 INFO L124 PetriNetUnfolderBase]: 3279/5611 cut-off events. [2024-06-27 18:39:20,050 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-06-27 18:39:20,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10683 conditions, 5611 events. 3279/5611 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36473 event pairs, 2675 based on Foata normal form. 1/5352 useless extension candidates. Maximal degree in co-relation 10672. Up to 4730 conditions per place. [2024-06-27 18:39:20,079 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-06-27 18:39:20,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 208 flow [2024-06-27 18:39:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 18:39:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6159420289855072 [2024-06-27 18:39:20,084 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 90 flow. Second operand 3 states and 85 transitions. [2024-06-27 18:39:20,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 208 flow [2024-06-27 18:39:20,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:20,087 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 116 flow [2024-06-27 18:39:20,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 18:39:20,088 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-06-27 18:39:20,089 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 116 flow [2024-06-27 18:39:20,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:20,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:20,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:39:20,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:20,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1558140143, now seen corresponding path program 1 times [2024-06-27 18:39:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686606349] [2024-06-27 18:39:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:20,635 INFO 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 18:39:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686606349] [2024-06-27 18:39:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686606349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:39:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112171062] [2024-06-27 18:39:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:39:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:39:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:39:20,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:20,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:21,382 INFO L124 PetriNetUnfolderBase]: 3278/5609 cut-off events. [2024-06-27 18:39:21,383 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2024-06-27 18:39:21,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11410 conditions, 5609 events. 3278/5609 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36104 event pairs, 2401 based on Foata normal form. 3/5393 useless extension candidates. Maximal degree in co-relation 11398. Up to 4711 conditions per place. [2024-06-27 18:39:21,414 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 50 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-06-27 18:39:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 303 flow [2024-06-27 18:39:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:39:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:39:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-27 18:39:21,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-06-27 18:39:21,417 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 116 flow. Second operand 4 states and 110 transitions. [2024-06-27 18:39:21,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 303 flow [2024-06-27 18:39:21,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:21,420 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 181 flow [2024-06-27 18:39:21,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-27 18:39:21,421 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-06-27 18:39:21,421 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 181 flow [2024-06-27 18:39:21,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:21,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:21,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:21,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:39:21,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:21,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1057705272, now seen corresponding path program 1 times [2024-06-27 18:39:21,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466955926] [2024-06-27 18:39:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:21,998 INFO 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 18:39:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466955926] [2024-06-27 18:39:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466955926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:22,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:39:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68416972] [2024-06-27 18:39:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:39:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:39:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:39:22,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:22,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:22,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:22,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:22,720 INFO L124 PetriNetUnfolderBase]: 3310/5480 cut-off events. [2024-06-27 18:39:22,720 INFO L125 PetriNetUnfolderBase]: For 2317/2317 co-relation queries the response was YES. [2024-06-27 18:39:22,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12545 conditions, 5480 events. 3310/5480 cut-off events. For 2317/2317 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34151 event pairs, 1623 based on Foata normal form. 5/5264 useless extension candidates. Maximal degree in co-relation 12530. Up to 4663 conditions per place. [2024-06-27 18:39:22,766 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 66 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-27 18:39:22,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 94 transitions, 491 flow [2024-06-27 18:39:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-27 18:39:22,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260869565217392 [2024-06-27 18:39:22,775 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 181 flow. Second operand 5 states and 144 transitions. [2024-06-27 18:39:22,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 94 transitions, 491 flow [2024-06-27 18:39:22,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 480 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:22,780 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 295 flow [2024-06-27 18:39:22,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-06-27 18:39:22,782 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 18:39:22,782 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 295 flow [2024-06-27 18:39:22,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:22,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:22,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:22,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:39:22,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:22,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1653990700, now seen corresponding path program 1 times [2024-06-27 18:39:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462972507] [2024-06-27 18:39:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:22,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:23,587 INFO 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 18:39:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462972507] [2024-06-27 18:39:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462972507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:23,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:23,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991384293] [2024-06-27 18:39:23,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:23,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:23,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:23,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:23,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:23,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:23,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:24,410 INFO L124 PetriNetUnfolderBase]: 3332/5680 cut-off events. [2024-06-27 18:39:24,410 INFO L125 PetriNetUnfolderBase]: For 5620/5623 co-relation queries the response was YES. [2024-06-27 18:39:24,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14815 conditions, 5680 events. 3332/5680 cut-off events. For 5620/5623 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 36540 event pairs, 1714 based on Foata normal form. 7/5468 useless extension candidates. Maximal degree in co-relation 14796. Up to 4629 conditions per place. [2024-06-27 18:39:24,446 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 78 selfloop transitions, 33 changer transitions 0/121 dead transitions. [2024-06-27 18:39:24,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 749 flow [2024-06-27 18:39:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-27 18:39:24,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6231884057971014 [2024-06-27 18:39:24,449 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 295 flow. Second operand 6 states and 172 transitions. [2024-06-27 18:39:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 749 flow [2024-06-27 18:39:24,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 121 transitions, 741 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:39:24,469 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 505 flow [2024-06-27 18:39:24,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2024-06-27 18:39:24,473 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-27 18:39:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 505 flow [2024-06-27 18:39:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:24,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:24,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:39:24,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:24,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 265897009, now seen corresponding path program 1 times [2024-06-27 18:39:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120289778] [2024-06-27 18:39:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:25,332 INFO 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 18:39:25,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:25,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120289778] [2024-06-27 18:39:25,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120289778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:25,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:25,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:25,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269519168] [2024-06-27 18:39:25,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:25,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:25,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:25,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:25,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:25,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:25,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:25,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:26,229 INFO L124 PetriNetUnfolderBase]: 3359/5021 cut-off events. [2024-06-27 18:39:26,229 INFO L125 PetriNetUnfolderBase]: For 11006/11012 co-relation queries the response was YES. [2024-06-27 18:39:26,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16609 conditions, 5021 events. 3359/5021 cut-off events. For 11006/11012 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27613 event pairs, 884 based on Foata normal form. 14/4991 useless extension candidates. Maximal degree in co-relation 16584. Up to 4594 conditions per place. [2024-06-27 18:39:26,267 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 85 selfloop transitions, 36 changer transitions 0/131 dead transitions. [2024-06-27 18:39:26,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 131 transitions, 945 flow [2024-06-27 18:39:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-27 18:39:26,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055900621118012 [2024-06-27 18:39:26,270 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 505 flow. Second operand 7 states and 195 transitions. [2024-06-27 18:39:26,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 131 transitions, 945 flow [2024-06-27 18:39:26,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 911 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-27 18:39:26,283 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 575 flow [2024-06-27 18:39:26,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 18:39:26,285 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-27 18:39:26,286 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 575 flow [2024-06-27 18:39:26,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:26,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:26,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:39:26,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:26,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash -314875968, now seen corresponding path program 1 times [2024-06-27 18:39:26,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:26,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363752636] [2024-06-27 18:39:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:26,818 INFO 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 18:39:26,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363752636] [2024-06-27 18:39:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363752636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:26,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:26,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146773243] [2024-06-27 18:39:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:26,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:26,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:26,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:26,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:26,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:26,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:27,760 INFO L124 PetriNetUnfolderBase]: 3905/6508 cut-off events. [2024-06-27 18:39:27,760 INFO L125 PetriNetUnfolderBase]: For 13979/13979 co-relation queries the response was YES. [2024-06-27 18:39:27,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19804 conditions, 6508 events. 3905/6508 cut-off events. For 13979/13979 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41260 event pairs, 1648 based on Foata normal form. 2/6287 useless extension candidates. Maximal degree in co-relation 19775. Up to 5591 conditions per place. [2024-06-27 18:39:27,802 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 74 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-27 18:39:27,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 791 flow [2024-06-27 18:39:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:39:27,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:39:27,805 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 575 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:39:27,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 791 flow [2024-06-27 18:39:27,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 701 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:27,818 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 525 flow [2024-06-27 18:39:27,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 18:39:27,820 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-27 18:39:27,820 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 525 flow [2024-06-27 18:39:27,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:27,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:27,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:39:27,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:27,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1210917895, now seen corresponding path program 1 times [2024-06-27 18:39:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300465472] [2024-06-27 18:39:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:27,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:28,333 INFO 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 18:39:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300465472] [2024-06-27 18:39:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300465472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776367476] [2024-06-27 18:39:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:28,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:28,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:28,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:28,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 525 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:28,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:28,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:28,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:29,411 INFO L124 PetriNetUnfolderBase]: 4009/6416 cut-off events. [2024-06-27 18:39:29,412 INFO L125 PetriNetUnfolderBase]: For 15082/15082 co-relation queries the response was YES. [2024-06-27 18:39:29,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 6416 events. 4009/6416 cut-off events. For 15082/15082 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 38977 event pairs, 1564 based on Foata normal form. 10/6260 useless extension candidates. Maximal degree in co-relation 19735. Up to 5405 conditions per place. [2024-06-27 18:39:29,449 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 98 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-06-27 18:39:29,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 945 flow [2024-06-27 18:39:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:39:29,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398550724637681 [2024-06-27 18:39:29,451 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 525 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:39:29,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 945 flow [2024-06-27 18:39:29,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 906 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:29,469 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 635 flow [2024-06-27 18:39:29,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-27 18:39:29,470 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-27 18:39:29,470 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 635 flow [2024-06-27 18:39:29,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:29,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:29,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:29,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:39:29,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1109607004, now seen corresponding path program 1 times [2024-06-27 18:39:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27985068] [2024-06-27 18:39:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:29,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:30,082 INFO 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 18:39:30,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:30,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27985068] [2024-06-27 18:39:30,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27985068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:30,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:30,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378933919] [2024-06-27 18:39:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:30,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:30,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:30,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:30,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:30,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:30,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:31,041 INFO L124 PetriNetUnfolderBase]: 4027/6515 cut-off events. [2024-06-27 18:39:31,041 INFO L125 PetriNetUnfolderBase]: For 20163/20172 co-relation queries the response was YES. [2024-06-27 18:39:31,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22018 conditions, 6515 events. 4027/6515 cut-off events. For 20163/20172 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 39851 event pairs, 1460 based on Foata normal form. 10/6297 useless extension candidates. Maximal degree in co-relation 21985. Up to 5641 conditions per place. [2024-06-27 18:39:31,088 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 94 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-06-27 18:39:31,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 1003 flow [2024-06-27 18:39:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:39:31,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-27 18:39:31,090 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 635 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:39:31,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 1003 flow [2024-06-27 18:39:31,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 123 transitions, 985 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:31,112 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 703 flow [2024-06-27 18:39:31,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=703, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2024-06-27 18:39:31,114 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-27 18:39:31,114 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 703 flow [2024-06-27 18:39:31,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:31,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:31,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:31,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:39:31,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1948057602, now seen corresponding path program 2 times [2024-06-27 18:39:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:31,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962063166] [2024-06-27 18:39:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:31,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:31,696 INFO 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 18:39:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962063166] [2024-06-27 18:39:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962063166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:31,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830540274] [2024-06-27 18:39:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:31,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:31,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:31,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 703 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:31,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:31,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:32,647 INFO L124 PetriNetUnfolderBase]: 4012/6395 cut-off events. [2024-06-27 18:39:32,647 INFO L125 PetriNetUnfolderBase]: For 21086/21086 co-relation queries the response was YES. [2024-06-27 18:39:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21913 conditions, 6395 events. 4012/6395 cut-off events. For 21086/21086 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38740 event pairs, 1645 based on Foata normal form. 2/6238 useless extension candidates. Maximal degree in co-relation 21877. Up to 5724 conditions per place. [2024-06-27 18:39:32,697 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 95 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2024-06-27 18:39:32,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 977 flow [2024-06-27 18:39:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 18:39:32,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-06-27 18:39:32,699 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 703 flow. Second operand 6 states and 133 transitions. [2024-06-27 18:39:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 977 flow [2024-06-27 18:39:32,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 944 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:32,726 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 704 flow [2024-06-27 18:39:32,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-27 18:39:32,727 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-27 18:39:32,728 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 704 flow [2024-06-27 18:39:32,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:39:32,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:32,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:32,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:39:32,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:32,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash 837007831, now seen corresponding path program 1 times [2024-06-27 18:39:32,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:32,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542687748] [2024-06-27 18:39:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:33,400 INFO 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 18:39:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:33,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542687748] [2024-06-27 18:39:33,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542687748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:33,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269860904] [2024-06-27 18:39:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:33,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:33,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:33,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 704 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:33,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:33,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:33,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:34,422 INFO L124 PetriNetUnfolderBase]: 5148/8131 cut-off events. [2024-06-27 18:39:34,422 INFO L125 PetriNetUnfolderBase]: For 27937/27946 co-relation queries the response was YES. [2024-06-27 18:39:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27400 conditions, 8131 events. 5148/8131 cut-off events. For 27937/27946 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 49977 event pairs, 1422 based on Foata normal form. 22/7909 useless extension candidates. Maximal degree in co-relation 27363. Up to 5808 conditions per place. [2024-06-27 18:39:34,470 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 128 selfloop transitions, 32 changer transitions 0/168 dead transitions. [2024-06-27 18:39:34,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 168 transitions, 1399 flow [2024-06-27 18:39:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:39:34,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 18:39:34,472 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 704 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:39:34,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 168 transitions, 1399 flow [2024-06-27 18:39:34,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 168 transitions, 1343 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:34,513 INFO L231 Difference]: Finished difference. Result has 91 places, 113 transitions, 912 flow [2024-06-27 18:39:34,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=912, PETRI_PLACES=91, PETRI_TRANSITIONS=113} [2024-06-27 18:39:34,513 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-27 18:39:34,514 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 113 transitions, 912 flow [2024-06-27 18:39:34,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:34,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:34,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:34,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:39:34,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:34,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash -259976107, now seen corresponding path program 2 times [2024-06-27 18:39:34,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:34,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561366809] [2024-06-27 18:39:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:35,112 INFO 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 18:39:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561366809] [2024-06-27 18:39:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561366809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:35,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52776517] [2024-06-27 18:39:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:35,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:35,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:35,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:35,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:35,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:35,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:35,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:36,159 INFO L124 PetriNetUnfolderBase]: 5308/8354 cut-off events. [2024-06-27 18:39:36,159 INFO L125 PetriNetUnfolderBase]: For 40104/40104 co-relation queries the response was YES. [2024-06-27 18:39:36,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33481 conditions, 8354 events. 5308/8354 cut-off events. For 40104/40104 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 51790 event pairs, 1804 based on Foata normal form. 10/8154 useless extension candidates. Maximal degree in co-relation 33441. Up to 7339 conditions per place. [2024-06-27 18:39:36,223 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 125 selfloop transitions, 26 changer transitions 0/159 dead transitions. [2024-06-27 18:39:36,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 159 transitions, 1445 flow [2024-06-27 18:39:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:39:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-27 18:39:36,225 INFO L175 Difference]: Start difference. First operand has 91 places, 113 transitions, 912 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:39:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 159 transitions, 1445 flow [2024-06-27 18:39:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1407 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:36,295 INFO L231 Difference]: Finished difference. Result has 100 places, 125 transitions, 1078 flow [2024-06-27 18:39:36,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1078, PETRI_PLACES=100, PETRI_TRANSITIONS=125} [2024-06-27 18:39:36,295 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 18:39:36,296 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 125 transitions, 1078 flow [2024-06-27 18:39:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:36,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:36,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:36,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:39:36,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:36,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 243811067, now seen corresponding path program 3 times [2024-06-27 18:39:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171395309] [2024-06-27 18:39:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:36,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:36,915 INFO 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 18:39:36,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:36,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171395309] [2024-06-27 18:39:36,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171395309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:36,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:36,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:36,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598169189] [2024-06-27 18:39:36,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:36,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:36,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:36,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:36,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:36,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:36,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 125 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:36,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:36,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:38,061 INFO L124 PetriNetUnfolderBase]: 5412/8512 cut-off events. [2024-06-27 18:39:38,061 INFO L125 PetriNetUnfolderBase]: For 44718/44718 co-relation queries the response was YES. [2024-06-27 18:39:38,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34772 conditions, 8512 events. 5412/8512 cut-off events. For 44718/44718 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 52943 event pairs, 1815 based on Foata normal form. 10/8306 useless extension candidates. Maximal degree in co-relation 34726. Up to 7175 conditions per place. [2024-06-27 18:39:38,121 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 133 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2024-06-27 18:39:38,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 173 transitions, 1662 flow [2024-06-27 18:39:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:39:38,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:39:38,123 INFO L175 Difference]: Start difference. First operand has 100 places, 125 transitions, 1078 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:39:38,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 173 transitions, 1662 flow [2024-06-27 18:39:38,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 173 transitions, 1597 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:38,191 INFO L231 Difference]: Finished difference. Result has 105 places, 133 transitions, 1188 flow [2024-06-27 18:39:38,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1188, PETRI_PLACES=105, PETRI_TRANSITIONS=133} [2024-06-27 18:39:38,192 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-06-27 18:39:38,192 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 133 transitions, 1188 flow [2024-06-27 18:39:38,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 18:39:38,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:38,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:38,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:39:38,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:38,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:38,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1479013938, now seen corresponding path program 1 times [2024-06-27 18:39:38,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:38,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628318379] [2024-06-27 18:39:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:38,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:39,313 INFO 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 18:39:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628318379] [2024-06-27 18:39:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628318379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:39,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668637559] [2024-06-27 18:39:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:39,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:39,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 133 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:39,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:39,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:39,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:40,871 INFO L124 PetriNetUnfolderBase]: 5607/8870 cut-off events. [2024-06-27 18:39:40,871 INFO L125 PetriNetUnfolderBase]: For 53396/53396 co-relation queries the response was YES. [2024-06-27 18:39:40,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37067 conditions, 8870 events. 5607/8870 cut-off events. For 53396/53396 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 56126 event pairs, 1772 based on Foata normal form. 18/8655 useless extension candidates. Maximal degree in co-relation 37019. Up to 7330 conditions per place. [2024-06-27 18:39:40,953 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 150 selfloop transitions, 29 changer transitions 0/187 dead transitions. [2024-06-27 18:39:40,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 187 transitions, 1780 flow [2024-06-27 18:39:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:39:40,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-27 18:39:40,955 INFO L175 Difference]: Start difference. First operand has 105 places, 133 transitions, 1188 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:39:40,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 187 transitions, 1780 flow [2024-06-27 18:39:41,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 187 transitions, 1724 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:41,064 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1228 flow [2024-06-27 18:39:41,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1228, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-27 18:39:41,066 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 18:39:41,066 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1228 flow [2024-06-27 18:39:41,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:41,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:41,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:39:41,067 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:41,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -687623115, now seen corresponding path program 1 times [2024-06-27 18:39:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971027766] [2024-06-27 18:39:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:41,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:41,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971027766] [2024-06-27 18:39:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971027766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:41,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:41,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665873475] [2024-06-27 18:39:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:41,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:41,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1228 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 18:39:41,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:41,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:41,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:42,572 INFO L124 PetriNetUnfolderBase]: 5598/8802 cut-off events. [2024-06-27 18:39:42,572 INFO L125 PetriNetUnfolderBase]: For 55325/55325 co-relation queries the response was YES. [2024-06-27 18:39:42,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37485 conditions, 8802 events. 5598/8802 cut-off events. For 55325/55325 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 54956 event pairs, 1897 based on Foata normal form. 3/8587 useless extension candidates. Maximal degree in co-relation 37435. Up to 7902 conditions per place. [2024-06-27 18:39:42,641 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 131 selfloop transitions, 13 changer transitions 0/152 dead transitions. [2024-06-27 18:39:42,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1562 flow [2024-06-27 18:39:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-27 18:39:42,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-27 18:39:42,644 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1228 flow. Second operand 5 states and 111 transitions. [2024-06-27 18:39:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1562 flow [2024-06-27 18:39:42,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 1474 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:42,717 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1175 flow [2024-06-27 18:39:42,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1175, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-27 18:39:42,718 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 18:39:42,718 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1175 flow [2024-06-27 18:39:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 18:39:42,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:42,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:42,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:39:42,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 173625215, now seen corresponding path program 1 times [2024-06-27 18:39:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:42,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655749556] [2024-06-27 18:39:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:43,437 INFO 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 18:39:43,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655749556] [2024-06-27 18:39:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655749556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:43,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:43,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:43,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009482288] [2024-06-27 18:39:43,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:43,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:43,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1175 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:43,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:43,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:43,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:44,484 INFO L124 PetriNetUnfolderBase]: 5621/8266 cut-off events. [2024-06-27 18:39:44,484 INFO L125 PetriNetUnfolderBase]: For 55688/55700 co-relation queries the response was YES. [2024-06-27 18:39:44,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36751 conditions, 8266 events. 5621/8266 cut-off events. For 55688/55700 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 46664 event pairs, 1441 based on Foata normal form. 10/8200 useless extension candidates. Maximal degree in co-relation 36700. Up to 7732 conditions per place. [2024-06-27 18:39:44,533 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 139 selfloop transitions, 37 changer transitions 0/184 dead transitions. [2024-06-27 18:39:44,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 184 transitions, 1787 flow [2024-06-27 18:39:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:39:44,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:39:44,535 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1175 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:39:44,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 184 transitions, 1787 flow [2024-06-27 18:39:44,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 184 transitions, 1746 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:44,587 INFO L231 Difference]: Finished difference. Result has 112 places, 141 transitions, 1294 flow [2024-06-27 18:39:44,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=112, PETRI_TRANSITIONS=141} [2024-06-27 18:39:44,588 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-27 18:39:44,588 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 141 transitions, 1294 flow [2024-06-27 18:39:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:44,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:44,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:39:44,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 173715425, now seen corresponding path program 2 times [2024-06-27 18:39:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:44,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344172661] [2024-06-27 18:39:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:44,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:45,323 INFO 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 18:39:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344172661] [2024-06-27 18:39:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344172661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561080120] [2024-06-27 18:39:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:45,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:45,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 141 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:45,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:45,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:45,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:46,490 INFO L124 PetriNetUnfolderBase]: 5621/8258 cut-off events. [2024-06-27 18:39:46,491 INFO L125 PetriNetUnfolderBase]: For 61414/61426 co-relation queries the response was YES. [2024-06-27 18:39:46,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37786 conditions, 8258 events. 5621/8258 cut-off events. For 61414/61426 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 46534 event pairs, 1446 based on Foata normal form. 10/8194 useless extension candidates. Maximal degree in co-relation 37735. Up to 7792 conditions per place. [2024-06-27 18:39:46,545 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 136 selfloop transitions, 38 changer transitions 0/182 dead transitions. [2024-06-27 18:39:46,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 182 transitions, 1796 flow [2024-06-27 18:39:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:39:46,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-27 18:39:46,546 INFO L175 Difference]: Start difference. First operand has 112 places, 141 transitions, 1294 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:39:46,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 182 transitions, 1796 flow [2024-06-27 18:39:46,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 182 transitions, 1708 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:46,626 INFO L231 Difference]: Finished difference. Result has 118 places, 145 transitions, 1378 flow [2024-06-27 18:39:46,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1378, PETRI_PLACES=118, PETRI_TRANSITIONS=145} [2024-06-27 18:39:46,627 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-06-27 18:39:46,627 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 145 transitions, 1378 flow [2024-06-27 18:39:46,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:46,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:46,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:39:46,628 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:46,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 177440230, now seen corresponding path program 1 times [2024-06-27 18:39:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222165347] [2024-06-27 18:39:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:47,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222165347] [2024-06-27 18:39:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222165347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928603762] [2024-06-27 18:39:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:47,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:47,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 145 transitions, 1378 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:47,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:47,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:48,359 INFO L124 PetriNetUnfolderBase]: 5957/9425 cut-off events. [2024-06-27 18:39:48,359 INFO L125 PetriNetUnfolderBase]: For 71926/71938 co-relation queries the response was YES. [2024-06-27 18:39:48,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41352 conditions, 9425 events. 5957/9425 cut-off events. For 71926/71938 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 59676 event pairs, 1479 based on Foata normal form. 13/9153 useless extension candidates. Maximal degree in co-relation 41297. Up to 6411 conditions per place. [2024-06-27 18:39:48,430 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 146 selfloop transitions, 52 changer transitions 0/206 dead transitions. [2024-06-27 18:39:48,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 206 transitions, 2216 flow [2024-06-27 18:39:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:39:48,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-27 18:39:48,431 INFO L175 Difference]: Start difference. First operand has 118 places, 145 transitions, 1378 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:39:48,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 206 transitions, 2216 flow [2024-06-27 18:39:48,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 206 transitions, 2145 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:48,524 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1581 flow [2024-06-27 18:39:48,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-06-27 18:39:48,525 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 18:39:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1581 flow [2024-06-27 18:39:48,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:48,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:39:48,526 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:48,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash 177434650, now seen corresponding path program 2 times [2024-06-27 18:39:48,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121140787] [2024-06-27 18:39:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,089 INFO 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 18:39:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121140787] [2024-06-27 18:39:49,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121140787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567547344] [2024-06-27 18:39:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:49,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:49,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:49,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:49,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:50,335 INFO L124 PetriNetUnfolderBase]: 5941/9431 cut-off events. [2024-06-27 18:39:50,335 INFO L125 PetriNetUnfolderBase]: For 82881/82893 co-relation queries the response was YES. [2024-06-27 18:39:50,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44029 conditions, 9431 events. 5941/9431 cut-off events. For 82881/82893 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 59912 event pairs, 1623 based on Foata normal form. 13/9151 useless extension candidates. Maximal degree in co-relation 43971. Up to 6405 conditions per place. [2024-06-27 18:39:50,435 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 147 selfloop transitions, 55 changer transitions 0/210 dead transitions. [2024-06-27 18:39:50,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 210 transitions, 2337 flow [2024-06-27 18:39:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:39:50,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-27 18:39:50,436 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1581 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:39:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 210 transitions, 2337 flow [2024-06-27 18:39:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 2228 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:50,599 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1691 flow [2024-06-27 18:39:50,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1691, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-06-27 18:39:50,600 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-06-27 18:39:50,600 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1691 flow [2024-06-27 18:39:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:50,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:50,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:50,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:39:50,600 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:50,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash 530676520, now seen corresponding path program 3 times [2024-06-27 18:39:50,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:50,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479377923] [2024-06-27 18:39:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:51,191 INFO 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 18:39:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479377923] [2024-06-27 18:39:51,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479377923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:51,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:51,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:51,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545115314] [2024-06-27 18:39:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:51,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:51,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:51,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1691 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:51,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:51,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:51,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:52,544 INFO L124 PetriNetUnfolderBase]: 6045/9235 cut-off events. [2024-06-27 18:39:52,544 INFO L125 PetriNetUnfolderBase]: For 92341/92353 co-relation queries the response was YES. [2024-06-27 18:39:52,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45949 conditions, 9235 events. 6045/9235 cut-off events. For 92341/92353 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 56456 event pairs, 2004 based on Foata normal form. 18/9079 useless extension candidates. Maximal degree in co-relation 45888. Up to 8210 conditions per place. [2024-06-27 18:39:52,609 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 163 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-06-27 18:39:52,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 199 transitions, 2281 flow [2024-06-27 18:39:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:39:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:39:52,611 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1691 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:39:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 199 transitions, 2281 flow [2024-06-27 18:39:52,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 199 transitions, 2173 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:52,714 INFO L231 Difference]: Finished difference. Result has 131 places, 161 transitions, 1722 flow [2024-06-27 18:39:52,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1722, PETRI_PLACES=131, PETRI_TRANSITIONS=161} [2024-06-27 18:39:52,714 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-06-27 18:39:52,715 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 161 transitions, 1722 flow [2024-06-27 18:39:52,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 18:39:52,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:52,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:52,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:39:52,715 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:52,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash 530972477, now seen corresponding path program 1 times [2024-06-27 18:39:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:52,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675581858] [2024-06-27 18:39:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:52,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:53,613 INFO 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 18:39:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675581858] [2024-06-27 18:39:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675581858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:53,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:53,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:53,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749216756] [2024-06-27 18:39:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:53,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:53,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:53,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:53,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 161 transitions, 1722 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:53,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:53,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:53,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:55,167 INFO L124 PetriNetUnfolderBase]: 6150/9494 cut-off events. [2024-06-27 18:39:55,167 INFO L125 PetriNetUnfolderBase]: For 99099/99099 co-relation queries the response was YES. [2024-06-27 18:39:55,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46198 conditions, 9494 events. 6150/9494 cut-off events. For 99099/99099 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 59079 event pairs, 1916 based on Foata normal form. 7/9299 useless extension candidates. Maximal degree in co-relation 46137. Up to 8116 conditions per place. [2024-06-27 18:39:55,248 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 169 selfloop transitions, 35 changer transitions 0/212 dead transitions. [2024-06-27 18:39:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 212 transitions, 2366 flow [2024-06-27 18:39:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:39:55,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 18:39:55,250 INFO L175 Difference]: Start difference. First operand has 131 places, 161 transitions, 1722 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:39:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 212 transitions, 2366 flow [2024-06-27 18:39:55,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 212 transitions, 2285 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:55,379 INFO L231 Difference]: Finished difference. Result has 133 places, 165 transitions, 1789 flow [2024-06-27 18:39:55,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1789, PETRI_PLACES=133, PETRI_TRANSITIONS=165} [2024-06-27 18:39:55,380 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:39:55,380 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 165 transitions, 1789 flow [2024-06-27 18:39:55,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:55,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:55,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:55,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:39:55,381 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:55,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2117035326, now seen corresponding path program 1 times [2024-06-27 18:39:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889547220] [2024-06-27 18:39:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:56,228 INFO 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 18:39:56,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889547220] [2024-06-27 18:39:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889547220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:56,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630087712] [2024-06-27 18:39:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:56,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:56,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:56,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 165 transitions, 1789 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:57,724 INFO L124 PetriNetUnfolderBase]: 6231/9533 cut-off events. [2024-06-27 18:39:57,725 INFO L125 PetriNetUnfolderBase]: For 106995/107007 co-relation queries the response was YES. [2024-06-27 18:39:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48134 conditions, 9533 events. 6231/9533 cut-off events. For 106995/107007 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 58586 event pairs, 1494 based on Foata normal form. 12/9334 useless extension candidates. Maximal degree in co-relation 48072. Up to 8436 conditions per place. [2024-06-27 18:39:57,804 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 191 selfloop transitions, 34 changer transitions 0/233 dead transitions. [2024-06-27 18:39:57,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 233 transitions, 2616 flow [2024-06-27 18:39:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:39:57,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:39:57,805 INFO L175 Difference]: Start difference. First operand has 133 places, 165 transitions, 1789 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:39:57,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 233 transitions, 2616 flow [2024-06-27 18:39:57,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 233 transitions, 2520 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:57,969 INFO L231 Difference]: Finished difference. Result has 138 places, 181 transitions, 1965 flow [2024-06-27 18:39:57,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1965, PETRI_PLACES=138, PETRI_TRANSITIONS=181} [2024-06-27 18:39:57,970 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 18:39:57,970 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 181 transitions, 1965 flow [2024-06-27 18:39:57,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:57,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:57,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:57,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:39:57,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:57,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:57,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2119776966, now seen corresponding path program 2 times [2024-06-27 18:39:57,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:57,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438702264] [2024-06-27 18:39:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:58,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438702264] [2024-06-27 18:39:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438702264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707100458] [2024-06-27 18:39:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:58,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:58,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 181 transitions, 1965 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:58,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:58,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:58,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:00,286 INFO L124 PetriNetUnfolderBase]: 6223/9501 cut-off events. [2024-06-27 18:40:00,287 INFO L125 PetriNetUnfolderBase]: For 111927/111939 co-relation queries the response was YES. [2024-06-27 18:40:00,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48305 conditions, 9501 events. 6223/9501 cut-off events. For 111927/111939 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 58187 event pairs, 1756 based on Foata normal form. 12/9308 useless extension candidates. Maximal degree in co-relation 48240. Up to 8553 conditions per place. [2024-06-27 18:40:00,369 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 197 selfloop transitions, 33 changer transitions 0/238 dead transitions. [2024-06-27 18:40:00,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 238 transitions, 2592 flow [2024-06-27 18:40:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:40:00,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-27 18:40:00,371 INFO L175 Difference]: Start difference. First operand has 138 places, 181 transitions, 1965 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:40:00,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 238 transitions, 2592 flow [2024-06-27 18:40:00,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 238 transitions, 2495 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:00,554 INFO L231 Difference]: Finished difference. Result has 145 places, 182 transitions, 1956 flow [2024-06-27 18:40:00,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1956, PETRI_PLACES=145, PETRI_TRANSITIONS=182} [2024-06-27 18:40:00,555 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 93 predicate places. [2024-06-27 18:40:00,555 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 182 transitions, 1956 flow [2024-06-27 18:40:00,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:00,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:40:00,555 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:00,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1087415800, now seen corresponding path program 1 times [2024-06-27 18:40:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520097855] [2024-06-27 18:40:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,394 INFO 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 18:40:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520097855] [2024-06-27 18:40:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520097855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266151330] [2024-06-27 18:40:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:01,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:01,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 182 transitions, 1956 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:01,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:01,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:02,857 INFO L124 PetriNetUnfolderBase]: 6367/9357 cut-off events. [2024-06-27 18:40:02,857 INFO L125 PetriNetUnfolderBase]: For 118871/118883 co-relation queries the response was YES. [2024-06-27 18:40:02,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48997 conditions, 9357 events. 6367/9357 cut-off events. For 118871/118883 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54277 event pairs, 1055 based on Foata normal form. 9/9286 useless extension candidates. Maximal degree in co-relation 48929. Up to 7241 conditions per place. [2024-06-27 18:40:02,937 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 228 selfloop transitions, 70 changer transitions 0/306 dead transitions. [2024-06-27 18:40:02,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 3735 flow [2024-06-27 18:40:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:40:02,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 18:40:02,946 INFO L175 Difference]: Start difference. First operand has 145 places, 182 transitions, 1956 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:40:02,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 3735 flow [2024-06-27 18:40:03,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 306 transitions, 3671 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:03,095 INFO L231 Difference]: Finished difference. Result has 152 places, 219 transitions, 2533 flow [2024-06-27 18:40:03,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2533, PETRI_PLACES=152, PETRI_TRANSITIONS=219} [2024-06-27 18:40:03,095 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:40:03,096 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 219 transitions, 2533 flow [2024-06-27 18:40:03,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:03,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:03,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:03,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:40:03,096 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:03,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1090216960, now seen corresponding path program 2 times [2024-06-27 18:40:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350039040] [2024-06-27 18:40:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:03,911 INFO 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 18:40:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:03,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350039040] [2024-06-27 18:40:03,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350039040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:03,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:03,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703105802] [2024-06-27 18:40:03,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:03,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:03,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:03,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 219 transitions, 2533 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:03,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:03,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:03,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:05,517 INFO L124 PetriNetUnfolderBase]: 6527/9910 cut-off events. [2024-06-27 18:40:05,518 INFO L125 PetriNetUnfolderBase]: For 138232/138244 co-relation queries the response was YES. [2024-06-27 18:40:05,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54310 conditions, 9910 events. 6527/9910 cut-off events. For 138232/138244 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 60478 event pairs, 1522 based on Foata normal form. 13/9738 useless extension candidates. Maximal degree in co-relation 54237. Up to 6994 conditions per place. [2024-06-27 18:40:05,618 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 200 selfloop transitions, 76 changer transitions 0/284 dead transitions. [2024-06-27 18:40:05,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 284 transitions, 3487 flow [2024-06-27 18:40:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:40:05,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-27 18:40:05,620 INFO L175 Difference]: Start difference. First operand has 152 places, 219 transitions, 2533 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:40:05,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 284 transitions, 3487 flow [2024-06-27 18:40:05,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 284 transitions, 3399 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:05,857 INFO L231 Difference]: Finished difference. Result has 158 places, 226 transitions, 2711 flow [2024-06-27 18:40:05,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2711, PETRI_PLACES=158, PETRI_TRANSITIONS=226} [2024-06-27 18:40:05,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 18:40:05,858 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 226 transitions, 2711 flow [2024-06-27 18:40:05,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:05,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:05,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:05,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:40:05,858 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2119892410, now seen corresponding path program 3 times [2024-06-27 18:40:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428086667] [2024-06-27 18:40:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:06,592 INFO 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 18:40:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428086667] [2024-06-27 18:40:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428086667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082375272] [2024-06-27 18:40:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:06,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:06,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 226 transitions, 2711 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:06,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:06,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:06,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:08,250 INFO L124 PetriNetUnfolderBase]: 6731/9795 cut-off events. [2024-06-27 18:40:08,250 INFO L125 PetriNetUnfolderBase]: For 154009/154021 co-relation queries the response was YES. [2024-06-27 18:40:08,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58010 conditions, 9795 events. 6731/9795 cut-off events. For 154009/154021 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56199 event pairs, 1091 based on Foata normal form. 9/9740 useless extension candidates. Maximal degree in co-relation 57935. Up to 7982 conditions per place. [2024-06-27 18:40:08,319 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 236 selfloop transitions, 71 changer transitions 0/315 dead transitions. [2024-06-27 18:40:08,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 315 transitions, 4279 flow [2024-06-27 18:40:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:40:08,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-27 18:40:08,321 INFO L175 Difference]: Start difference. First operand has 158 places, 226 transitions, 2711 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:40:08,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 315 transitions, 4279 flow [2024-06-27 18:40:08,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 315 transitions, 4072 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:08,572 INFO L231 Difference]: Finished difference. Result has 163 places, 243 transitions, 3013 flow [2024-06-27 18:40:08,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3013, PETRI_PLACES=163, PETRI_TRANSITIONS=243} [2024-06-27 18:40:08,573 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-27 18:40:08,573 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 243 transitions, 3013 flow [2024-06-27 18:40:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:08,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:08,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:40:08,574 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:08,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1205503480, now seen corresponding path program 4 times [2024-06-27 18:40:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545501439] [2024-06-27 18:40:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545501439] [2024-06-27 18:40:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545501439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:09,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:09,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386608285] [2024-06-27 18:40:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:09,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:09,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 243 transitions, 3013 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:09,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:09,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:09,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,188 INFO L124 PetriNetUnfolderBase]: 7119/10790 cut-off events. [2024-06-27 18:40:11,189 INFO L125 PetriNetUnfolderBase]: For 178286/178298 co-relation queries the response was YES. [2024-06-27 18:40:11,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63499 conditions, 10790 events. 7119/10790 cut-off events. For 178286/178298 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 66548 event pairs, 1531 based on Foata normal form. 13/10596 useless extension candidates. Maximal degree in co-relation 63420. Up to 7341 conditions per place. [2024-06-27 18:40:11,315 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 234 selfloop transitions, 95 changer transitions 0/337 dead transitions. [2024-06-27 18:40:11,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 337 transitions, 4435 flow [2024-06-27 18:40:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:40:11,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893719806763285 [2024-06-27 18:40:11,316 INFO L175 Difference]: Start difference. First operand has 163 places, 243 transitions, 3013 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:40:11,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 337 transitions, 4435 flow [2024-06-27 18:40:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 337 transitions, 4304 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:11,839 INFO L231 Difference]: Finished difference. Result has 170 places, 259 transitions, 3363 flow [2024-06-27 18:40:11,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3363, PETRI_PLACES=170, PETRI_TRANSITIONS=259} [2024-06-27 18:40:11,840 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-27 18:40:11,840 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 259 transitions, 3363 flow [2024-06-27 18:40:11,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:11,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:11,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:40:11,841 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2059599142, now seen corresponding path program 1 times [2024-06-27 18:40:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:11,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859104510] [2024-06-27 18:40:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:12,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:12,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859104510] [2024-06-27 18:40:12,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859104510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:12,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449170008] [2024-06-27 18:40:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:12,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:12,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:12,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 259 transitions, 3363 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:12,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:12,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:14,602 INFO L124 PetriNetUnfolderBase]: 7599/11516 cut-off events. [2024-06-27 18:40:14,602 INFO L125 PetriNetUnfolderBase]: For 214633/214645 co-relation queries the response was YES. [2024-06-27 18:40:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70121 conditions, 11516 events. 7599/11516 cut-off events. For 214633/214645 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 71753 event pairs, 1603 based on Foata normal form. 39/11342 useless extension candidates. Maximal degree in co-relation 70039. Up to 8123 conditions per place. [2024-06-27 18:40:14,941 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 241 selfloop transitions, 76 changer transitions 0/325 dead transitions. [2024-06-27 18:40:14,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 325 transitions, 4440 flow [2024-06-27 18:40:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:40:14,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 18:40:14,942 INFO L175 Difference]: Start difference. First operand has 170 places, 259 transitions, 3363 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:40:14,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 325 transitions, 4440 flow [2024-06-27 18:40:15,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 325 transitions, 4235 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:15,292 INFO L231 Difference]: Finished difference. Result has 173 places, 262 transitions, 3394 flow [2024-06-27 18:40:15,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3394, PETRI_PLACES=173, PETRI_TRANSITIONS=262} [2024-06-27 18:40:15,292 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 121 predicate places. [2024-06-27 18:40:15,292 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 262 transitions, 3394 flow [2024-06-27 18:40:15,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:15,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:15,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:15,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:40:15,293 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2059606086, now seen corresponding path program 5 times [2024-06-27 18:40:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980841184] [2024-06-27 18:40:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:16,108 INFO 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 18:40:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980841184] [2024-06-27 18:40:16,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980841184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:16,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:16,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:16,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494938569] [2024-06-27 18:40:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:16,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:16,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:16,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:16,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 262 transitions, 3394 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:16,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:16,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:16,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:18,170 INFO L124 PetriNetUnfolderBase]: 7759/11804 cut-off events. [2024-06-27 18:40:18,170 INFO L125 PetriNetUnfolderBase]: For 216629/216641 co-relation queries the response was YES. [2024-06-27 18:40:18,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72832 conditions, 11804 events. 7759/11804 cut-off events. For 216629/216641 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 74202 event pairs, 1550 based on Foata normal form. 13/11585 useless extension candidates. Maximal degree in co-relation 72748. Up to 8737 conditions per place. [2024-06-27 18:40:18,284 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 241 selfloop transitions, 79 changer transitions 0/328 dead transitions. [2024-06-27 18:40:18,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 328 transitions, 4454 flow [2024-06-27 18:40:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:40:18,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-27 18:40:18,286 INFO L175 Difference]: Start difference. First operand has 173 places, 262 transitions, 3394 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:40:18,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 328 transitions, 4454 flow [2024-06-27 18:40:18,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 328 transitions, 4254 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:18,692 INFO L231 Difference]: Finished difference. Result has 175 places, 269 transitions, 3492 flow [2024-06-27 18:40:18,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3492, PETRI_PLACES=175, PETRI_TRANSITIONS=269} [2024-06-27 18:40:18,692 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-27 18:40:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 269 transitions, 3492 flow [2024-06-27 18:40:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:18,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:18,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:40:18,694 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash 606258075, now seen corresponding path program 1 times [2024-06-27 18:40:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359337486] [2024-06-27 18:40:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:19,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:19,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359337486] [2024-06-27 18:40:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359337486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:19,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:19,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624722534] [2024-06-27 18:40:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:19,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:19,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 269 transitions, 3492 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:19,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:19,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:19,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:21,273 INFO L124 PetriNetUnfolderBase]: 7810/11869 cut-off events. [2024-06-27 18:40:21,273 INFO L125 PetriNetUnfolderBase]: For 215851/215851 co-relation queries the response was YES. [2024-06-27 18:40:21,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72528 conditions, 11869 events. 7810/11869 cut-off events. For 215851/215851 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 74504 event pairs, 2060 based on Foata normal form. 3/11633 useless extension candidates. Maximal degree in co-relation 72443. Up to 10934 conditions per place. [2024-06-27 18:40:21,394 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 275 selfloop transitions, 20 changer transitions 0/303 dead transitions. [2024-06-27 18:40:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 303 transitions, 4310 flow [2024-06-27 18:40:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:21,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:40:21,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-27 18:40:21,396 INFO L175 Difference]: Start difference. First operand has 175 places, 269 transitions, 3492 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:40:21,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 303 transitions, 4310 flow [2024-06-27 18:40:21,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 303 transitions, 4093 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:21,857 INFO L231 Difference]: Finished difference. Result has 175 places, 273 transitions, 3400 flow [2024-06-27 18:40:21,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3400, PETRI_PLACES=175, PETRI_TRANSITIONS=273} [2024-06-27 18:40:21,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-27 18:40:21,858 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 273 transitions, 3400 flow [2024-06-27 18:40:21,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:21,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:21,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:21,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:40:21,858 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:21,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1920719078, now seen corresponding path program 2 times [2024-06-27 18:40:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477901140] [2024-06-27 18:40:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:22,687 INFO 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 18:40:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477901140] [2024-06-27 18:40:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477901140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:22,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:22,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:22,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934481781] [2024-06-27 18:40:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:22,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:22,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 273 transitions, 3400 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:22,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:22,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:24,722 INFO L124 PetriNetUnfolderBase]: 8050/12183 cut-off events. [2024-06-27 18:40:24,723 INFO L125 PetriNetUnfolderBase]: For 231576/231576 co-relation queries the response was YES. [2024-06-27 18:40:24,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73405 conditions, 12183 events. 8050/12183 cut-off events. For 231576/231576 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 76318 event pairs, 2283 based on Foata normal form. 18/12004 useless extension candidates. Maximal degree in co-relation 73319. Up to 10632 conditions per place. [2024-06-27 18:40:24,877 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 284 selfloop transitions, 37 changer transitions 0/329 dead transitions. [2024-06-27 18:40:24,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 329 transitions, 4408 flow [2024-06-27 18:40:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:40:24,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:40:24,878 INFO L175 Difference]: Start difference. First operand has 175 places, 273 transitions, 3400 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:40:24,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 329 transitions, 4408 flow [2024-06-27 18:40:25,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 329 transitions, 4202 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:25,332 INFO L231 Difference]: Finished difference. Result has 177 places, 275 transitions, 3347 flow [2024-06-27 18:40:25,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3347, PETRI_PLACES=177, PETRI_TRANSITIONS=275} [2024-06-27 18:40:25,332 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-27 18:40:25,332 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 275 transitions, 3347 flow [2024-06-27 18:40:25,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:25,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:40:25,333 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:25,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1655618858, now seen corresponding path program 3 times [2024-06-27 18:40:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782815805] [2024-06-27 18:40:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,259 INFO 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 18:40:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782815805] [2024-06-27 18:40:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782815805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471985367] [2024-06-27 18:40:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:26,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:26,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:26,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 275 transitions, 3347 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:26,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:26,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,812 INFO L124 PetriNetUnfolderBase]: 8455/12926 cut-off events. [2024-06-27 18:40:28,812 INFO L125 PetriNetUnfolderBase]: For 247923/247923 co-relation queries the response was YES. [2024-06-27 18:40:28,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77227 conditions, 12926 events. 8455/12926 cut-off events. For 247923/247923 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 83380 event pairs, 2284 based on Foata normal form. 18/12706 useless extension candidates. Maximal degree in co-relation 77141. Up to 11093 conditions per place. [2024-06-27 18:40:28,934 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 296 selfloop transitions, 40 changer transitions 0/344 dead transitions. [2024-06-27 18:40:28,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 344 transitions, 4405 flow [2024-06-27 18:40:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:40:28,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:40:28,935 INFO L175 Difference]: Start difference. First operand has 177 places, 275 transitions, 3347 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:40:28,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 344 transitions, 4405 flow [2024-06-27 18:40:29,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 344 transitions, 4280 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:29,388 INFO L231 Difference]: Finished difference. Result has 180 places, 283 transitions, 3436 flow [2024-06-27 18:40:29,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3436, PETRI_PLACES=180, PETRI_TRANSITIONS=283} [2024-06-27 18:40:29,389 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2024-06-27 18:40:29,389 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 283 transitions, 3436 flow [2024-06-27 18:40:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:29,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:29,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:29,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:40:29,390 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:29,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1665112298, now seen corresponding path program 4 times [2024-06-27 18:40:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194656517] [2024-06-27 18:40:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:30,335 INFO 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 18:40:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194656517] [2024-06-27 18:40:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194656517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894120023] [2024-06-27 18:40:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:30,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:30,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 283 transitions, 3436 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:30,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:30,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:32,671 INFO L124 PetriNetUnfolderBase]: 8757/13295 cut-off events. [2024-06-27 18:40:32,671 INFO L125 PetriNetUnfolderBase]: For 268949/268949 co-relation queries the response was YES. [2024-06-27 18:40:32,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82117 conditions, 13295 events. 8757/13295 cut-off events. For 268949/268949 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 85190 event pairs, 2500 based on Foata normal form. 18/13094 useless extension candidates. Maximal degree in co-relation 82029. Up to 11859 conditions per place. [2024-06-27 18:40:32,835 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 299 selfloop transitions, 42 changer transitions 0/349 dead transitions. [2024-06-27 18:40:32,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 349 transitions, 4574 flow [2024-06-27 18:40:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:40:32,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:40:32,837 INFO L175 Difference]: Start difference. First operand has 180 places, 283 transitions, 3436 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:40:32,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 349 transitions, 4574 flow [2024-06-27 18:40:33,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 349 transitions, 4424 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:33,393 INFO L231 Difference]: Finished difference. Result has 187 places, 301 transitions, 3688 flow [2024-06-27 18:40:33,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3688, PETRI_PLACES=187, PETRI_TRANSITIONS=301} [2024-06-27 18:40:33,394 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 135 predicate places. [2024-06-27 18:40:33,394 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 301 transitions, 3688 flow [2024-06-27 18:40:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:33,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:40:33,394 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:33,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1655944358, now seen corresponding path program 5 times [2024-06-27 18:40:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638350192] [2024-06-27 18:40:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:34,402 INFO 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 18:40:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:34,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638350192] [2024-06-27 18:40:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638350192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084813984] [2024-06-27 18:40:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:34,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:34,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:34,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 301 transitions, 3688 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:34,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:34,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:34,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:36,788 INFO L124 PetriNetUnfolderBase]: 8960/13748 cut-off events. [2024-06-27 18:40:36,788 INFO L125 PetriNetUnfolderBase]: For 295879/295879 co-relation queries the response was YES. [2024-06-27 18:40:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88952 conditions, 13748 events. 8960/13748 cut-off events. For 295879/295879 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 90019 event pairs, 2443 based on Foata normal form. 18/13505 useless extension candidates. Maximal degree in co-relation 88859. Up to 11547 conditions per place. [2024-06-27 18:40:37,290 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 302 selfloop transitions, 54 changer transitions 0/364 dead transitions. [2024-06-27 18:40:37,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 364 transitions, 4865 flow [2024-06-27 18:40:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:40:37,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 18:40:37,291 INFO L175 Difference]: Start difference. First operand has 187 places, 301 transitions, 3688 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:40:37,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 364 transitions, 4865 flow [2024-06-27 18:40:37,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 364 transitions, 4738 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:37,862 INFO L231 Difference]: Finished difference. Result has 193 places, 303 transitions, 3767 flow [2024-06-27 18:40:37,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3767, PETRI_PLACES=193, PETRI_TRANSITIONS=303} [2024-06-27 18:40:37,863 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-27 18:40:37,863 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 303 transitions, 3767 flow [2024-06-27 18:40:37,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 18:40:37,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:37,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:40:37,864 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:37,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1665119242, now seen corresponding path program 6 times [2024-06-27 18:40:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703257011] [2024-06-27 18:40:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:38,519 INFO 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 18:40:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703257011] [2024-06-27 18:40:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703257011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563454931] [2024-06-27 18:40:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:38,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:38,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 303 transitions, 3767 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:38,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:41,122 INFO L124 PetriNetUnfolderBase]: 9055/13798 cut-off events. [2024-06-27 18:40:41,122 INFO L125 PetriNetUnfolderBase]: For 298885/298897 co-relation queries the response was YES. [2024-06-27 18:40:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89560 conditions, 13798 events. 9055/13798 cut-off events. For 298885/298897 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 89686 event pairs, 2465 based on Foata normal form. 17/13577 useless extension candidates. Maximal degree in co-relation 89465. Up to 12402 conditions per place. [2024-06-27 18:40:41,307 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 317 selfloop transitions, 46 changer transitions 0/371 dead transitions. [2024-06-27 18:40:41,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 371 transitions, 5204 flow [2024-06-27 18:40:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:40:41,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:40:41,309 INFO L175 Difference]: Start difference. First operand has 193 places, 303 transitions, 3767 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:40:41,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 371 transitions, 5204 flow [2024-06-27 18:40:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 371 transitions, 5018 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:41,924 INFO L231 Difference]: Finished difference. Result has 198 places, 319 transitions, 4039 flow [2024-06-27 18:40:41,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4039, PETRI_PLACES=198, PETRI_TRANSITIONS=319} [2024-06-27 18:40:41,924 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 18:40:41,924 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 319 transitions, 4039 flow [2024-06-27 18:40:41,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:41,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:40:41,925 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:41,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash -719721152, now seen corresponding path program 1 times [2024-06-27 18:40:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905279795] [2024-06-27 18:40:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:42,804 INFO 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 18:40:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905279795] [2024-06-27 18:40:42,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905279795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:42,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:42,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:42,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191417503] [2024-06-27 18:40:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:42,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:42,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:42,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:42,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 319 transitions, 4039 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:42,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:42,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:42,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,149 INFO L124 PetriNetUnfolderBase]: 9122/14014 cut-off events. [2024-06-27 18:40:45,149 INFO L125 PetriNetUnfolderBase]: For 280752/280761 co-relation queries the response was YES. [2024-06-27 18:40:45,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88950 conditions, 14014 events. 9122/14014 cut-off events. For 280752/280761 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 92170 event pairs, 2466 based on Foata normal form. 13/13757 useless extension candidates. Maximal degree in co-relation 88851. Up to 12030 conditions per place. [2024-06-27 18:40:45,355 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 298 selfloop transitions, 60 changer transitions 0/366 dead transitions. [2024-06-27 18:40:45,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 366 transitions, 5075 flow [2024-06-27 18:40:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:40:45,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 18:40:45,356 INFO L175 Difference]: Start difference. First operand has 198 places, 319 transitions, 4039 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:40:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 366 transitions, 5075 flow [2024-06-27 18:40:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 366 transitions, 4939 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-27 18:40:46,150 INFO L231 Difference]: Finished difference. Result has 204 places, 322 transitions, 4086 flow [2024-06-27 18:40:46,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4086, PETRI_PLACES=204, PETRI_TRANSITIONS=322} [2024-06-27 18:40:46,150 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 152 predicate places. [2024-06-27 18:40:46,150 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 322 transitions, 4086 flow [2024-06-27 18:40:46,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:46,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:40:46,151 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:46,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1735385557, now seen corresponding path program 2 times [2024-06-27 18:40:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926290393] [2024-06-27 18:40:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:46,573 INFO 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 18:40:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926290393] [2024-06-27 18:40:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926290393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:46,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674758842] [2024-06-27 18:40:46,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:46,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:46,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:46,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:46,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 322 transitions, 4086 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:46,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:46,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:46,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:49,026 INFO L124 PetriNetUnfolderBase]: 9113/13805 cut-off events. [2024-06-27 18:40:49,027 INFO L125 PetriNetUnfolderBase]: For 283501/283501 co-relation queries the response was YES. [2024-06-27 18:40:49,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89610 conditions, 13805 events. 9113/13805 cut-off events. For 283501/283501 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 88874 event pairs, 2639 based on Foata normal form. 3/13589 useless extension candidates. Maximal degree in co-relation 89508. Up to 12904 conditions per place. [2024-06-27 18:40:49,171 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 319 selfloop transitions, 14 changer transitions 0/341 dead transitions. [2024-06-27 18:40:49,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 341 transitions, 4825 flow [2024-06-27 18:40:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 18:40:49,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-27 18:40:49,172 INFO L175 Difference]: Start difference. First operand has 204 places, 322 transitions, 4086 flow. Second operand 6 states and 128 transitions. [2024-06-27 18:40:49,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 341 transitions, 4825 flow [2024-06-27 18:40:49,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 341 transitions, 4684 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:49,577 INFO L231 Difference]: Finished difference. Result has 205 places, 322 transitions, 3980 flow [2024-06-27 18:40:49,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3945, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3980, PETRI_PLACES=205, PETRI_TRANSITIONS=322} [2024-06-27 18:40:49,578 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 153 predicate places. [2024-06-27 18:40:49,578 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 322 transitions, 3980 flow [2024-06-27 18:40:49,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:49,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:49,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:49,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:40:49,579 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:49,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 212193298, now seen corresponding path program 1 times [2024-06-27 18:40:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151573688] [2024-06-27 18:40:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:50,015 INFO 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 18:40:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151573688] [2024-06-27 18:40:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151573688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224330973] [2024-06-27 18:40:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:50,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:50,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 322 transitions, 3980 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:50,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:50,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:50,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:52,398 INFO L124 PetriNetUnfolderBase]: 9146/14030 cut-off events. [2024-06-27 18:40:52,398 INFO L125 PetriNetUnfolderBase]: For 287114/287114 co-relation queries the response was YES. [2024-06-27 18:40:52,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89405 conditions, 14030 events. 9146/14030 cut-off events. For 287114/287114 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 92200 event pairs, 2559 based on Foata normal form. 9/13771 useless extension candidates. Maximal degree in co-relation 89302. Up to 12616 conditions per place. [2024-06-27 18:40:52,552 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 316 selfloop transitions, 43 changer transitions 0/367 dead transitions. [2024-06-27 18:40:52,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 367 transitions, 5128 flow [2024-06-27 18:40:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:40:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:40:52,553 INFO L175 Difference]: Start difference. First operand has 205 places, 322 transitions, 3980 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:40:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 367 transitions, 5128 flow [2024-06-27 18:40:53,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 367 transitions, 5079 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:53,088 INFO L231 Difference]: Finished difference. Result has 206 places, 331 transitions, 4193 flow [2024-06-27 18:40:53,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4193, PETRI_PLACES=206, PETRI_TRANSITIONS=331} [2024-06-27 18:40:53,089 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-27 18:40:53,089 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 331 transitions, 4193 flow [2024-06-27 18:40:53,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:53,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:53,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:53,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:40:53,090 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:53,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 619191988, now seen corresponding path program 2 times [2024-06-27 18:40:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:53,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470907668] [2024-06-27 18:40:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:53,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:53,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470907668] [2024-06-27 18:40:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470907668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409400957] [2024-06-27 18:40:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 331 transitions, 4193 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:55,810 INFO L124 PetriNetUnfolderBase]: 8980/13680 cut-off events. [2024-06-27 18:40:55,811 INFO L125 PetriNetUnfolderBase]: For 289513/289522 co-relation queries the response was YES. [2024-06-27 18:40:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88093 conditions, 13680 events. 8980/13680 cut-off events. For 289513/289522 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 88602 event pairs, 2526 based on Foata normal form. 5/13445 useless extension candidates. Maximal degree in co-relation 87990. Up to 12362 conditions per place. [2024-06-27 18:40:56,015 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 307 selfloop transitions, 47 changer transitions 0/362 dead transitions. [2024-06-27 18:40:56,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 362 transitions, 5089 flow [2024-06-27 18:40:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:40:56,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:40:56,017 INFO L175 Difference]: Start difference. First operand has 206 places, 331 transitions, 4193 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:40:56,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 362 transitions, 5089 flow [2024-06-27 18:40:56,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 362 transitions, 4997 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:56,608 INFO L231 Difference]: Finished difference. Result has 209 places, 331 transitions, 4209 flow [2024-06-27 18:40:56,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4209, PETRI_PLACES=209, PETRI_TRANSITIONS=331} [2024-06-27 18:40:56,609 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-27 18:40:56,609 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 331 transitions, 4209 flow [2024-06-27 18:40:56,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 18:40:56,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:56,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:56,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:40:56,610 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:56,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash -651724931, now seen corresponding path program 1 times [2024-06-27 18:40:56,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480491920] [2024-06-27 18:40:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:56,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:57,394 INFO 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 18:40:57,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480491920] [2024-06-27 18:40:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480491920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:57,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086671570] [2024-06-27 18:40:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:57,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:57,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 331 transitions, 4209 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:40:57,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:57,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:57,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:01,001 INFO L124 PetriNetUnfolderBase]: 12799/19665 cut-off events. [2024-06-27 18:41:01,002 INFO L125 PetriNetUnfolderBase]: For 534861/534870 co-relation queries the response was YES. [2024-06-27 18:41:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126346 conditions, 19665 events. 12799/19665 cut-off events. For 534861/534870 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 136131 event pairs, 2147 based on Foata normal form. 82/19401 useless extension candidates. Maximal degree in co-relation 126242. Up to 7590 conditions per place. [2024-06-27 18:41:01,239 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 338 selfloop transitions, 116 changer transitions 0/462 dead transitions. [2024-06-27 18:41:01,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 462 transitions, 6524 flow [2024-06-27 18:41:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2024-06-27 18:41:01,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207729468599034 [2024-06-27 18:41:01,240 INFO L175 Difference]: Start difference. First operand has 209 places, 331 transitions, 4209 flow. Second operand 9 states and 257 transitions. [2024-06-27 18:41:01,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 462 transitions, 6524 flow [2024-06-27 18:41:02,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 462 transitions, 6349 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:02,254 INFO L231 Difference]: Finished difference. Result has 214 places, 354 transitions, 4775 flow [2024-06-27 18:41:02,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4775, PETRI_PLACES=214, PETRI_TRANSITIONS=354} [2024-06-27 18:41:02,255 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 18:41:02,255 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 354 transitions, 4775 flow [2024-06-27 18:41:02,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:02,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:41:02,256 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:02,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash -649847261, now seen corresponding path program 2 times [2024-06-27 18:41:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134099311] [2024-06-27 18:41:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,940 INFO 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 18:41:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134099311] [2024-06-27 18:41:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134099311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924496698] [2024-06-27 18:41:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:02,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:03,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:03,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 354 transitions, 4775 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:03,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:03,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:03,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,529 INFO L124 PetriNetUnfolderBase]: 13179/19374 cut-off events. [2024-06-27 18:41:07,529 INFO L125 PetriNetUnfolderBase]: For 587945/587954 co-relation queries the response was YES. [2024-06-27 18:41:07,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137193 conditions, 19374 events. 13179/19374 cut-off events. For 587945/587954 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 127292 event pairs, 2712 based on Foata normal form. 32/19311 useless extension candidates. Maximal degree in co-relation 137086. Up to 16331 conditions per place. [2024-06-27 18:41:07,906 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 320 selfloop transitions, 113 changer transitions 0/441 dead transitions. [2024-06-27 18:41:07,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 441 transitions, 6549 flow [2024-06-27 18:41:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:41:07,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603864734299517 [2024-06-27 18:41:07,908 INFO L175 Difference]: Start difference. First operand has 214 places, 354 transitions, 4775 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:41:07,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 441 transitions, 6549 flow [2024-06-27 18:41:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 441 transitions, 6381 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:09,545 INFO L231 Difference]: Finished difference. Result has 220 places, 357 transitions, 4925 flow [2024-06-27 18:41:09,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4925, PETRI_PLACES=220, PETRI_TRANSITIONS=357} [2024-06-27 18:41:09,546 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-27 18:41:09,547 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 357 transitions, 4925 flow [2024-06-27 18:41:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:09,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:09,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:09,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:41:09,547 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:09,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1205461047, now seen corresponding path program 3 times [2024-06-27 18:41:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027046212] [2024-06-27 18:41:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:10,335 INFO 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 18:41:10,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:10,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027046212] [2024-06-27 18:41:10,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027046212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:10,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:10,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:10,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940075460] [2024-06-27 18:41:10,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:10,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:10,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:10,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 357 transitions, 4925 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:10,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:10,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:10,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:15,788 INFO L124 PetriNetUnfolderBase]: 15771/24295 cut-off events. [2024-06-27 18:41:15,788 INFO L125 PetriNetUnfolderBase]: For 787445/787454 co-relation queries the response was YES. [2024-06-27 18:41:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166804 conditions, 24295 events. 15771/24295 cut-off events. For 787445/787454 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 174693 event pairs, 3602 based on Foata normal form. 82/23973 useless extension candidates. Maximal degree in co-relation 166695. Up to 14392 conditions per place. [2024-06-27 18:41:16,085 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 333 selfloop transitions, 131 changer transitions 0/472 dead transitions. [2024-06-27 18:41:16,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 472 transitions, 7223 flow [2024-06-27 18:41:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2024-06-27 18:41:16,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-27 18:41:16,087 INFO L175 Difference]: Start difference. First operand has 220 places, 357 transitions, 4925 flow. Second operand 10 states and 280 transitions. [2024-06-27 18:41:16,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 472 transitions, 7223 flow [2024-06-27 18:41:18,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 472 transitions, 6899 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:18,098 INFO L231 Difference]: Finished difference. Result has 224 places, 364 transitions, 5148 flow [2024-06-27 18:41:18,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4660, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5148, PETRI_PLACES=224, PETRI_TRANSITIONS=364} [2024-06-27 18:41:18,099 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 18:41:18,099 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 364 transitions, 5148 flow [2024-06-27 18:41:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:18,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:18,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:41:18,100 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:18,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -563011301, now seen corresponding path program 4 times [2024-06-27 18:41:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049269189] [2024-06-27 18:41:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:18,980 INFO 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 18:41:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049269189] [2024-06-27 18:41:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049269189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:18,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562682092] [2024-06-27 18:41:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 364 transitions, 5148 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:24,591 INFO L124 PetriNetUnfolderBase]: 16635/25835 cut-off events. [2024-06-27 18:41:24,592 INFO L125 PetriNetUnfolderBase]: For 843802/843811 co-relation queries the response was YES. [2024-06-27 18:41:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176699 conditions, 25835 events. 16635/25835 cut-off events. For 843802/843811 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 190010 event pairs, 4842 based on Foata normal form. 76/25431 useless extension candidates. Maximal degree in co-relation 176588. Up to 20037 conditions per place. [2024-06-27 18:41:24,969 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 346 selfloop transitions, 88 changer transitions 0/442 dead transitions. [2024-06-27 18:41:24,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 442 transitions, 6657 flow [2024-06-27 18:41:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:41:24,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772946859903382 [2024-06-27 18:41:24,970 INFO L175 Difference]: Start difference. First operand has 224 places, 364 transitions, 5148 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:41:24,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 442 transitions, 6657 flow [2024-06-27 18:41:27,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 442 transitions, 6366 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:27,327 INFO L231 Difference]: Finished difference. Result has 227 places, 366 transitions, 5127 flow [2024-06-27 18:41:27,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4857, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5127, PETRI_PLACES=227, PETRI_TRANSITIONS=366} [2024-06-27 18:41:27,328 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-27 18:41:27,328 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 366 transitions, 5127 flow [2024-06-27 18:41:27,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:27,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:27,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:41:27,329 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:27,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -563155451, now seen corresponding path program 5 times [2024-06-27 18:41:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243426730] [2024-06-27 18:41:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,341 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 18:41:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243426730] [2024-06-27 18:41:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243426730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25738605] [2024-06-27 18:41:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:28,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:28,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 366 transitions, 5127 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 18:41:28,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:28,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand