./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:23:22,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:23:22,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:23:22,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:23:22,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:23:22,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:23:22,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:23:22,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:23:22,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:23:22,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:23:22,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:23:22,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:23:22,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:23:22,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:23:22,861 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:23:22,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:23:22,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:23:22,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:23:22,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:23:22,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:23:22,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:23:22,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:23:22,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:23:22,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:23:22,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:23:22,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:23:22,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:23:22,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:23:22,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:23:22,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:23:22,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:23:22,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:23:22,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:23:22,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:23:22,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:23:22,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:23:22,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:23:22,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:23:22,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:23:22,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:23:22,867 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:23:22,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:23:22,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:23:22,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:23:23,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:23:23,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:23:23,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:23:23,103 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:23:23,104 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:23:23,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 13:23:23,230 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:23:23,230 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:23:23,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:23:24,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:23:24,434 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:23:24,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:23:24,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6066164e2/6123534e59c44fab8d1e4666ac913e1d/FLAG948841bf1 [2024-05-12 13:23:24,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6066164e2/6123534e59c44fab8d1e4666ac913e1d [2024-05-12 13:23:24,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:23:24,463 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:23:24,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:23:24,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:23:24,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:23:24,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:23" (1/2) ... [2024-05-12 13:23:24,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707392f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:23:24, skipping insertion in model container [2024-05-12 13:23:24,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:23" (1/2) ... [2024-05-12 13:23:24,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e5ab0fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:23:24, skipping insertion in model container [2024-05-12 13:23:24,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:23:24" (2/2) ... [2024-05-12 13:23:24,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707392f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:24, skipping insertion in model container [2024-05-12 13:23:24,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:23:24" (2/2) ... [2024-05-12 13:23:24,470 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:23:24,515 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:23:24,516 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:23:24,516 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:23:24,516 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:23:24,516 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-05-12 13:23:24,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:23:24,691 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-05-12 13:23:24,883 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:23:24,889 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:23:24,920 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:23:24,982 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:23:25,021 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:23:25,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25 WrapperNode [2024-05-12 13:23:25,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:23:25,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:23:25,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:23:25,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:23:25,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,085 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-05-12 13:23:25,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:23:25,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:23:25,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:23:25,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:23:25,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,130 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 13:23:25,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:23:25,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:23:25,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:23:25,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:23:25,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (1/1) ... [2024-05-12 13:23:25,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:23:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:23:25,269 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) [2024-05-12 13:23:25,282 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 [2024-05-12 13:23:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:23:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:23:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:23:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:23:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:23:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:23:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:23:25,312 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:23:25,414 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:23:25,416 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:23:25,662 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:23:25,663 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:23:25,803 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:23:25,803 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:23:25,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:23:25 BoogieIcfgContainer [2024-05-12 13:23:25,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:23:25,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:23:25,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:23:25,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:23:25,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:23:23" (1/4) ... [2024-05-12 13:23:25,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657b25a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:23:25, skipping insertion in model container [2024-05-12 13:23:25,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:23:24" (2/4) ... [2024-05-12 13:23:25,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:23:25, skipping insertion in model container [2024-05-12 13:23:25,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:23:25" (3/4) ... [2024-05-12 13:23:25,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657b25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:23:25, skipping insertion in model container [2024-05-12 13:23:25,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:23:25" (4/4) ... [2024-05-12 13:23:25,816 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:23:25,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:23:25,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 13:23:25,829 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:23:25,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:23:25,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 13:23:25,917 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-05-12 13:23:25,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:23:25,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-05-12 13:23:25,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 13:23:25,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-05-12 13:23:25,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:23:25,937 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;@189a34f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:23:25,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 13:23:25,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:23:25,941 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 13:23:25,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:23:25,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:25,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:23:25,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:25,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1227859548, now seen corresponding path program 1 times [2024-05-12 13:23:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120544065] [2024-05-12 13:23:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120544065] [2024-05-12 13:23:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120544065] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:23:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76347435] [2024-05-12 13:23:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:23:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:26,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:23:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:23:26,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-05-12 13:23:26,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:26,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:26,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-05-12 13:23:26,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:27,176 INFO L124 PetriNetUnfolderBase]: 543/981 cut-off events. [2024-05-12 13:23:27,177 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-05-12 13:23:27,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 981 events. 543/981 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5019 event pairs, 234 based on Foata normal form. 43/954 useless extension candidates. Maximal degree in co-relation 1889. Up to 892 conditions per place. [2024-05-12 13:23:27,186 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-05-12 13:23:27,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 179 flow [2024-05-12 13:23:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:23:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:23:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-05-12 13:23:27,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 13:23:27,197 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-05-12 13:23:27,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 179 flow [2024-05-12 13:23:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:27,201 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-05-12 13:23:27,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-05-12 13:23:27,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 13:23:27,205 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-05-12 13:23:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:27,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:27,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:23:27,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:27,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1142795089, now seen corresponding path program 1 times [2024-05-12 13:23:27,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027714214] [2024-05-12 13:23:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027714214] [2024-05-12 13:23:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027714214] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:27,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:23:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848240227] [2024-05-12 13:23:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:23:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:23:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:23:27,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 13:23:27,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:27,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:27,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 13:23:27,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:28,015 INFO L124 PetriNetUnfolderBase]: 621/1186 cut-off events. [2024-05-12 13:23:28,015 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-05-12 13:23:28,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 1186 events. 621/1186 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6424 event pairs, 417 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 2450. Up to 997 conditions per place. [2024-05-12 13:23:28,021 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 44 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-05-12 13:23:28,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 254 flow [2024-05-12 13:23:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:23:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:23:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-05-12 13:23:28,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-05-12 13:23:28,023 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 93 transitions. [2024-05-12 13:23:28,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 254 flow [2024-05-12 13:23:28,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:23:28,025 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-05-12 13:23:28,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-05-12 13:23:28,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-05-12 13:23:28,026 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-05-12 13:23:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:28,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:28,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:23:28,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:28,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1072271313, now seen corresponding path program 1 times [2024-05-12 13:23:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633892614] [2024-05-12 13:23:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633892614] [2024-05-12 13:23:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633892614] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:23:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688790288] [2024-05-12 13:23:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:23:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:23:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:23:28,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 13:23:28,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:28,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:28,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 13:23:28,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:28,815 INFO L124 PetriNetUnfolderBase]: 613/1171 cut-off events. [2024-05-12 13:23:28,815 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-05-12 13:23:28,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 1171 events. 613/1171 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6450 event pairs, 207 based on Foata normal form. 4/1082 useless extension candidates. Maximal degree in co-relation 2625. Up to 968 conditions per place. [2024-05-12 13:23:28,822 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 51 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-05-12 13:23:28,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 366 flow [2024-05-12 13:23:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:23:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:23:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-05-12 13:23:28,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-05-12 13:23:28,828 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 5 states and 110 transitions. [2024-05-12 13:23:28,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 366 flow [2024-05-12 13:23:28,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 340 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:28,830 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 233 flow [2024-05-12 13:23:28,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-05-12 13:23:28,831 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-05-12 13:23:28,831 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 233 flow [2024-05-12 13:23:28,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:28,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:28,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:28,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:23:28,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:28,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1072314424, now seen corresponding path program 1 times [2024-05-12 13:23:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:28,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488736386] [2024-05-12 13:23:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488736386] [2024-05-12 13:23:28,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488736386] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:28,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:28,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:23:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245361005] [2024-05-12 13:23:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:28,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:23:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:23:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:23:28,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-05-12 13:23:28,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:28,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:28,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-05-12 13:23:28,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:28,987 INFO L124 PetriNetUnfolderBase]: 187/511 cut-off events. [2024-05-12 13:23:28,987 INFO L125 PetriNetUnfolderBase]: For 288/314 co-relation queries the response was YES. [2024-05-12 13:23:28,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 511 events. 187/511 cut-off events. For 288/314 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3079 event pairs, 68 based on Foata normal form. 10/476 useless extension candidates. Maximal degree in co-relation 1057. Up to 273 conditions per place. [2024-05-12 13:23:28,990 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-05-12 13:23:28,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 276 flow [2024-05-12 13:23:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:23:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:23:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-05-12 13:23:28,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-05-12 13:23:28,991 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 233 flow. Second operand 3 states and 81 transitions. [2024-05-12 13:23:28,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 276 flow [2024-05-12 13:23:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:23:28,993 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 200 flow [2024-05-12 13:23:28,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-05-12 13:23:28,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-05-12 13:23:28,994 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 200 flow [2024-05-12 13:23:28,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:28,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:28,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:28,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:23:28,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:28,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1399063530, now seen corresponding path program 1 times [2024-05-12 13:23:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:28,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313181776] [2024-05-12 13:23:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:29,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313181776] [2024-05-12 13:23:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313181776] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:29,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:29,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:23:29,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127536489] [2024-05-12 13:23:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:29,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:23:29,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:23:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:23:29,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 13:23:29,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:29,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:29,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 13:23:29,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:30,126 INFO L124 PetriNetUnfolderBase]: 531/1018 cut-off events. [2024-05-12 13:23:30,127 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2024-05-12 13:23:30,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1018 events. 531/1018 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5369 event pairs, 120 based on Foata normal form. 4/978 useless extension candidates. Maximal degree in co-relation 2437. Up to 808 conditions per place. [2024-05-12 13:23:30,132 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 50 selfloop transitions, 12 changer transitions 1/71 dead transitions. [2024-05-12 13:23:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 384 flow [2024-05-12 13:23:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:23:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:23:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-05-12 13:23:30,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-05-12 13:23:30,134 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 200 flow. Second operand 6 states and 121 transitions. [2024-05-12 13:23:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 384 flow [2024-05-12 13:23:30,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:30,136 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 221 flow [2024-05-12 13:23:30,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-05-12 13:23:30,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-05-12 13:23:30,137 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 221 flow [2024-05-12 13:23:30,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:30,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:30,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:30,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:23:30,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:30,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash 297551754, now seen corresponding path program 1 times [2024-05-12 13:23:30,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:30,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009766584] [2024-05-12 13:23:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:30,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009766584] [2024-05-12 13:23:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009766584] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:23:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059674960] [2024-05-12 13:23:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:23:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:23:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:23:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 13:23:30,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:30,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:30,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 13:23:30,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:30,939 INFO L124 PetriNetUnfolderBase]: 452/901 cut-off events. [2024-05-12 13:23:30,940 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-05-12 13:23:30,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 901 events. 452/901 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4736 event pairs, 185 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 2248. Up to 738 conditions per place. [2024-05-12 13:23:30,944 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-05-12 13:23:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 392 flow [2024-05-12 13:23:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:23:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:23:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-05-12 13:23:30,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 13:23:30,947 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 221 flow. Second operand 5 states and 92 transitions. [2024-05-12 13:23:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 392 flow [2024-05-12 13:23:30,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 359 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:30,952 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 250 flow [2024-05-12 13:23:30,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-05-12 13:23:30,954 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-05-12 13:23:30,954 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 250 flow [2024-05-12 13:23:30,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:30,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:30,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:30,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:23:30,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:30,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash 634171447, now seen corresponding path program 1 times [2024-05-12 13:23:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503443593] [2024-05-12 13:23:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:31,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503443593] [2024-05-12 13:23:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503443593] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:31,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:31,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:23:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160664137] [2024-05-12 13:23:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:31,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:23:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:23:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:23:31,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:31,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:31,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:31,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:31,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:31,815 INFO L124 PetriNetUnfolderBase]: 537/1029 cut-off events. [2024-05-12 13:23:31,816 INFO L125 PetriNetUnfolderBase]: For 1064/1064 co-relation queries the response was YES. [2024-05-12 13:23:31,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 1029 events. 537/1029 cut-off events. For 1064/1064 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5361 event pairs, 223 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 2704. Up to 860 conditions per place. [2024-05-12 13:23:31,821 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-05-12 13:23:31,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 438 flow [2024-05-12 13:23:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:23:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:23:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-05-12 13:23:31,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 13:23:31,822 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 250 flow. Second operand 6 states and 105 transitions. [2024-05-12 13:23:31,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 438 flow [2024-05-12 13:23:31,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 429 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:31,825 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 276 flow [2024-05-12 13:23:31,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-05-12 13:23:31,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-05-12 13:23:31,826 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 276 flow [2024-05-12 13:23:31,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:31,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:31,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:23:31,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:31,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1821272535, now seen corresponding path program 1 times [2024-05-12 13:23:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413245182] [2024-05-12 13:23:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413245182] [2024-05-12 13:23:32,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413245182] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:23:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421764755] [2024-05-12 13:23:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:23:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:23:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:23:32,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:32,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:32,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:32,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:32,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:32,711 INFO L124 PetriNetUnfolderBase]: 593/1129 cut-off events. [2024-05-12 13:23:32,711 INFO L125 PetriNetUnfolderBase]: For 1667/1667 co-relation queries the response was YES. [2024-05-12 13:23:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3134 conditions, 1129 events. 593/1129 cut-off events. For 1667/1667 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5935 event pairs, 242 based on Foata normal form. 1/1087 useless extension candidates. Maximal degree in co-relation 3106. Up to 939 conditions per place. [2024-05-12 13:23:32,716 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 59 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-05-12 13:23:32,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 487 flow [2024-05-12 13:23:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:23:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:23:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-05-12 13:23:32,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 13:23:32,720 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 276 flow. Second operand 6 states and 106 transitions. [2024-05-12 13:23:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 487 flow [2024-05-12 13:23:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 468 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:32,723 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 323 flow [2024-05-12 13:23:32,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-05-12 13:23:32,723 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-05-12 13:23:32,723 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 323 flow [2024-05-12 13:23:32,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:32,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:32,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:32,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:23:32,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:32,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1815528855, now seen corresponding path program 2 times [2024-05-12 13:23:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:32,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601431324] [2024-05-12 13:23:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601431324] [2024-05-12 13:23:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601431324] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:23:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018785755] [2024-05-12 13:23:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:23:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:23:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:23:33,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:33,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:33,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:33,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:33,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:33,636 INFO L124 PetriNetUnfolderBase]: 576/1090 cut-off events. [2024-05-12 13:23:33,637 INFO L125 PetriNetUnfolderBase]: For 2217/2229 co-relation queries the response was YES. [2024-05-12 13:23:33,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1090 events. 576/1090 cut-off events. For 2217/2229 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5672 event pairs, 218 based on Foata normal form. 9/1061 useless extension candidates. Maximal degree in co-relation 3223. Up to 889 conditions per place. [2024-05-12 13:23:33,645 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 58 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-05-12 13:23:33,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 531 flow [2024-05-12 13:23:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:23:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:23:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-05-12 13:23:33,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-05-12 13:23:33,646 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 323 flow. Second operand 6 states and 107 transitions. [2024-05-12 13:23:33,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 531 flow [2024-05-12 13:23:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 512 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:33,650 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 351 flow [2024-05-12 13:23:33,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-05-12 13:23:33,651 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-05-12 13:23:33,651 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 351 flow [2024-05-12 13:23:33,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:33,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:33,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:23:33,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:33,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1815519927, now seen corresponding path program 1 times [2024-05-12 13:23:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613128562] [2024-05-12 13:23:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613128562] [2024-05-12 13:23:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613128562] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:34,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:34,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126613961] [2024-05-12 13:23:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:34,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:34,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:34,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:34,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:34,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:34,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:34,622 INFO L124 PetriNetUnfolderBase]: 556/1060 cut-off events. [2024-05-12 13:23:34,622 INFO L125 PetriNetUnfolderBase]: For 2250/2250 co-relation queries the response was YES. [2024-05-12 13:23:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 1060 events. 556/1060 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5542 event pairs, 213 based on Foata normal form. 1/1024 useless extension candidates. Maximal degree in co-relation 3255. Up to 877 conditions per place. [2024-05-12 13:23:34,628 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 69 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-05-12 13:23:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 595 flow [2024-05-12 13:23:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-05-12 13:23:34,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-05-12 13:23:34,630 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 351 flow. Second operand 7 states and 122 transitions. [2024-05-12 13:23:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 595 flow [2024-05-12 13:23:34,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 564 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:34,634 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 361 flow [2024-05-12 13:23:34,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-05-12 13:23:34,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-05-12 13:23:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 361 flow [2024-05-12 13:23:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:23:34,636 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:34,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -206608707, now seen corresponding path program 1 times [2024-05-12 13:23:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253182710] [2024-05-12 13:23:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253182710] [2024-05-12 13:23:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253182710] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428938463] [2024-05-12 13:23:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:35,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:35,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:35,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:35,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:35,663 INFO L124 PetriNetUnfolderBase]: 619/1175 cut-off events. [2024-05-12 13:23:35,663 INFO L125 PetriNetUnfolderBase]: For 3171/3174 co-relation queries the response was YES. [2024-05-12 13:23:35,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3731 conditions, 1175 events. 619/1175 cut-off events. For 3171/3174 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6221 event pairs, 188 based on Foata normal form. 5/1135 useless extension candidates. Maximal degree in co-relation 3699. Up to 937 conditions per place. [2024-05-12 13:23:35,668 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 65 selfloop transitions, 22 changer transitions 0/95 dead transitions. [2024-05-12 13:23:35,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 635 flow [2024-05-12 13:23:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 13:23:35,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-05-12 13:23:35,670 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 361 flow. Second operand 7 states and 129 transitions. [2024-05-12 13:23:35,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 635 flow [2024-05-12 13:23:35,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 610 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:23:35,674 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 438 flow [2024-05-12 13:23:35,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-05-12 13:23:35,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-05-12 13:23:35,675 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 438 flow [2024-05-12 13:23:35,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:35,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:35,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:35,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:23:35,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:35,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1430437843, now seen corresponding path program 2 times [2024-05-12 13:23:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679950581] [2024-05-12 13:23:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:36,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679950581] [2024-05-12 13:23:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679950581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:36,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915362356] [2024-05-12 13:23:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:36,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:36,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:36,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:36,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:36,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:36,597 INFO L124 PetriNetUnfolderBase]: 653/1218 cut-off events. [2024-05-12 13:23:36,597 INFO L125 PetriNetUnfolderBase]: For 4137/4140 co-relation queries the response was YES. [2024-05-12 13:23:36,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4252 conditions, 1218 events. 653/1218 cut-off events. For 4137/4140 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6398 event pairs, 178 based on Foata normal form. 5/1181 useless extension candidates. Maximal degree in co-relation 4218. Up to 948 conditions per place. [2024-05-12 13:23:36,605 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 69 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-05-12 13:23:36,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 792 flow [2024-05-12 13:23:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 13:23:36,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-05-12 13:23:36,606 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 438 flow. Second operand 7 states and 129 transitions. [2024-05-12 13:23:36,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 792 flow [2024-05-12 13:23:36,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 104 transitions, 754 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:36,612 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 550 flow [2024-05-12 13:23:36,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2024-05-12 13:23:36,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-05-12 13:23:36,613 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 550 flow [2024-05-12 13:23:36,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:36,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:36,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:36,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:23:36,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:36,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1430437626, now seen corresponding path program 1 times [2024-05-12 13:23:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448051057] [2024-05-12 13:23:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448051057] [2024-05-12 13:23:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448051057] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:37,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:37,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955960704] [2024-05-12 13:23:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:37,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:37,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 550 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:37,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:37,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:37,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:37,638 INFO L124 PetriNetUnfolderBase]: 712/1302 cut-off events. [2024-05-12 13:23:37,638 INFO L125 PetriNetUnfolderBase]: For 5308/5308 co-relation queries the response was YES. [2024-05-12 13:23:37,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4869 conditions, 1302 events. 712/1302 cut-off events. For 5308/5308 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6756 event pairs, 202 based on Foata normal form. 1/1256 useless extension candidates. Maximal degree in co-relation 4833. Up to 1119 conditions per place. [2024-05-12 13:23:37,645 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 85 selfloop transitions, 14 changer transitions 0/105 dead transitions. [2024-05-12 13:23:37,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 843 flow [2024-05-12 13:23:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-05-12 13:23:37,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-05-12 13:23:37,647 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 550 flow. Second operand 7 states and 117 transitions. [2024-05-12 13:23:37,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 843 flow [2024-05-12 13:23:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 787 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:37,655 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 550 flow [2024-05-12 13:23:37,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-05-12 13:23:37,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-05-12 13:23:37,656 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 550 flow [2024-05-12 13:23:37,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:37,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:37,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:37,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:23:37,656 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:37,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash -446817992, now seen corresponding path program 2 times [2024-05-12 13:23:37,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:37,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793924202] [2024-05-12 13:23:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:37,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793924202] [2024-05-12 13:23:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793924202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:38,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:38,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:38,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819261904] [2024-05-12 13:23:38,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:38,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:38,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:38,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:38,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:38,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 550 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:38,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:38,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:38,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:38,548 INFO L124 PetriNetUnfolderBase]: 730/1317 cut-off events. [2024-05-12 13:23:38,548 INFO L125 PetriNetUnfolderBase]: For 5965/5980 co-relation queries the response was YES. [2024-05-12 13:23:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 1317 events. 730/1317 cut-off events. For 5965/5980 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6724 event pairs, 182 based on Foata normal form. 11/1285 useless extension candidates. Maximal degree in co-relation 5003. Up to 1084 conditions per place. [2024-05-12 13:23:38,560 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 85 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-05-12 13:23:38,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 111 transitions, 917 flow [2024-05-12 13:23:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-05-12 13:23:38,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2024-05-12 13:23:38,562 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 550 flow. Second operand 7 states and 121 transitions. [2024-05-12 13:23:38,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 111 transitions, 917 flow [2024-05-12 13:23:38,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 883 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:23:38,570 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 601 flow [2024-05-12 13:23:38,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-05-12 13:23:38,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-05-12 13:23:38,571 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 601 flow [2024-05-12 13:23:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:38,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:38,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:23:38,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:38,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -446818209, now seen corresponding path program 3 times [2024-05-12 13:23:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:38,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454433126] [2024-05-12 13:23:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:39,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454433126] [2024-05-12 13:23:39,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454433126] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:39,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157847295] [2024-05-12 13:23:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:39,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:39,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:39,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:39,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:39,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:39,506 INFO L124 PetriNetUnfolderBase]: 673/1283 cut-off events. [2024-05-12 13:23:39,506 INFO L125 PetriNetUnfolderBase]: For 6709/6726 co-relation queries the response was YES. [2024-05-12 13:23:39,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 1283 events. 673/1283 cut-off events. For 6709/6726 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6925 event pairs, 175 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 4871. Up to 930 conditions per place. [2024-05-12 13:23:39,517 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 74 selfloop transitions, 36 changer transitions 0/121 dead transitions. [2024-05-12 13:23:39,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 1044 flow [2024-05-12 13:23:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-05-12 13:23:39,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2024-05-12 13:23:39,519 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 601 flow. Second operand 7 states and 128 transitions. [2024-05-12 13:23:39,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 1044 flow [2024-05-12 13:23:39,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 121 transitions, 1010 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:39,528 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 811 flow [2024-05-12 13:23:39,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=811, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2024-05-12 13:23:39,530 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-05-12 13:23:39,530 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 811 flow [2024-05-12 13:23:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:39,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:39,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:39,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:23:39,531 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:39,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash -448594490, now seen corresponding path program 3 times [2024-05-12 13:23:39,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102999760] [2024-05-12 13:23:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102999760] [2024-05-12 13:23:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102999760] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:23:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801117925] [2024-05-12 13:23:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:40,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:23:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:23:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:23:40,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:40,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 811 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:40,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:40,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:40,457 INFO L124 PetriNetUnfolderBase]: 724/1326 cut-off events. [2024-05-12 13:23:40,457 INFO L125 PetriNetUnfolderBase]: For 7939/7954 co-relation queries the response was YES. [2024-05-12 13:23:40,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5559 conditions, 1326 events. 724/1326 cut-off events. For 7939/7954 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6888 event pairs, 181 based on Foata normal form. 11/1288 useless extension candidates. Maximal degree in co-relation 5517. Up to 1076 conditions per place. [2024-05-12 13:23:40,464 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 93 selfloop transitions, 25 changer transitions 0/124 dead transitions. [2024-05-12 13:23:40,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 124 transitions, 1163 flow [2024-05-12 13:23:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-05-12 13:23:40,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 13:23:40,465 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 811 flow. Second operand 7 states and 119 transitions. [2024-05-12 13:23:40,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 124 transitions, 1163 flow [2024-05-12 13:23:40,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 124 transitions, 1089 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:40,476 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 798 flow [2024-05-12 13:23:40,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=798, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2024-05-12 13:23:40,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-05-12 13:23:40,477 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 798 flow [2024-05-12 13:23:40,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:40,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:40,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:23:40,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1866521352, now seen corresponding path program 1 times [2024-05-12 13:23:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654763699] [2024-05-12 13:23:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:41,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654763699] [2024-05-12 13:23:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654763699] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:41,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828209573] [2024-05-12 13:23:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:41,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:41,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 798 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:41,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:41,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:41,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:41,685 INFO L124 PetriNetUnfolderBase]: 763/1426 cut-off events. [2024-05-12 13:23:41,685 INFO L125 PetriNetUnfolderBase]: For 8820/8827 co-relation queries the response was YES. [2024-05-12 13:23:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 1426 events. 763/1426 cut-off events. For 8820/8827 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7697 event pairs, 185 based on Foata normal form. 4/1375 useless extension candidates. Maximal degree in co-relation 6031. Up to 1096 conditions per place. [2024-05-12 13:23:41,692 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 103 selfloop transitions, 39 changer transitions 0/153 dead transitions. [2024-05-12 13:23:41,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 153 transitions, 1425 flow [2024-05-12 13:23:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 13:23:41,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-05-12 13:23:41,693 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 798 flow. Second operand 8 states and 147 transitions. [2024-05-12 13:23:41,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 153 transitions, 1425 flow [2024-05-12 13:23:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 153 transitions, 1361 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-05-12 13:23:41,705 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1117 flow [2024-05-12 13:23:41,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2024-05-12 13:23:41,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-05-12 13:23:41,705 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1117 flow [2024-05-12 13:23:41,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:41,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:41,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:41,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:23:41,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:41,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2100044450, now seen corresponding path program 2 times [2024-05-12 13:23:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651942002] [2024-05-12 13:23:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:42,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:42,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651942002] [2024-05-12 13:23:42,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651942002] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:42,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:42,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:42,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152302919] [2024-05-12 13:23:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:42,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:42,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:42,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1117 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:42,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:42,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:42,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:42,887 INFO L124 PetriNetUnfolderBase]: 762/1414 cut-off events. [2024-05-12 13:23:42,887 INFO L125 PetriNetUnfolderBase]: For 9777/9780 co-relation queries the response was YES. [2024-05-12 13:23:42,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6371 conditions, 1414 events. 762/1414 cut-off events. For 9777/9780 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7543 event pairs, 188 based on Foata normal form. 4/1369 useless extension candidates. Maximal degree in co-relation 6323. Up to 1059 conditions per place. [2024-05-12 13:23:42,895 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 92 selfloop transitions, 52 changer transitions 0/155 dead transitions. [2024-05-12 13:23:42,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 155 transitions, 1603 flow [2024-05-12 13:23:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:23:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:23:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-05-12 13:23:42,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-05-12 13:23:42,897 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1117 flow. Second operand 7 states and 130 transitions. [2024-05-12 13:23:42,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 155 transitions, 1603 flow [2024-05-12 13:23:42,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 1520 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:42,912 INFO L231 Difference]: Finished difference. Result has 103 places, 131 transitions, 1301 flow [2024-05-12 13:23:42,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1301, PETRI_PLACES=103, PETRI_TRANSITIONS=131} [2024-05-12 13:23:42,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-05-12 13:23:42,913 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 131 transitions, 1301 flow [2024-05-12 13:23:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:42,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:42,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:42,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:23:42,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:42,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2100049286, now seen corresponding path program 1 times [2024-05-12 13:23:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373131967] [2024-05-12 13:23:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:43,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373131967] [2024-05-12 13:23:43,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373131967] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:43,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:43,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251748123] [2024-05-12 13:23:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:43,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:43,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:43,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:43,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 131 transitions, 1301 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:43,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:43,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:43,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:43,924 INFO L124 PetriNetUnfolderBase]: 831/1511 cut-off events. [2024-05-12 13:23:43,925 INFO L125 PetriNetUnfolderBase]: For 11362/11362 co-relation queries the response was YES. [2024-05-12 13:23:43,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1511 events. 831/1511 cut-off events. For 11362/11362 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7957 event pairs, 203 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 6946. Up to 1174 conditions per place. [2024-05-12 13:23:43,934 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 109 selfloop transitions, 48 changer transitions 0/163 dead transitions. [2024-05-12 13:23:43,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 163 transitions, 1753 flow [2024-05-12 13:23:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 13:23:43,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 13:23:43,935 INFO L175 Difference]: Start difference. First operand has 103 places, 131 transitions, 1301 flow. Second operand 8 states and 139 transitions. [2024-05-12 13:23:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 163 transitions, 1753 flow [2024-05-12 13:23:43,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 163 transitions, 1688 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:43,952 INFO L231 Difference]: Finished difference. Result has 108 places, 134 transitions, 1377 flow [2024-05-12 13:23:43,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1377, PETRI_PLACES=108, PETRI_TRANSITIONS=134} [2024-05-12 13:23:43,952 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-05-12 13:23:43,953 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 134 transitions, 1377 flow [2024-05-12 13:23:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:43,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:43,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:23:43,953 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:43,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1393891750, now seen corresponding path program 1 times [2024-05-12 13:23:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:43,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053071865] [2024-05-12 13:23:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:44,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053071865] [2024-05-12 13:23:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053071865] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542756306] [2024-05-12 13:23:44,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:44,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:44,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 134 transitions, 1377 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:44,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:44,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:44,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:44,985 INFO L124 PetriNetUnfolderBase]: 844/1525 cut-off events. [2024-05-12 13:23:44,985 INFO L125 PetriNetUnfolderBase]: For 12019/12019 co-relation queries the response was YES. [2024-05-12 13:23:44,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7233 conditions, 1525 events. 844/1525 cut-off events. For 12019/12019 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7949 event pairs, 206 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 7182. Up to 1300 conditions per place. [2024-05-12 13:23:45,015 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 143 selfloop transitions, 18 changer transitions 0/167 dead transitions. [2024-05-12 13:23:45,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 1857 flow [2024-05-12 13:23:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-05-12 13:23:45,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-05-12 13:23:45,016 INFO L175 Difference]: Start difference. First operand has 108 places, 134 transitions, 1377 flow. Second operand 8 states and 133 transitions. [2024-05-12 13:23:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 1857 flow [2024-05-12 13:23:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 167 transitions, 1744 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 13:23:45,032 INFO L231 Difference]: Finished difference. Result has 110 places, 136 transitions, 1327 flow [2024-05-12 13:23:45,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=110, PETRI_TRANSITIONS=136} [2024-05-12 13:23:45,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-05-12 13:23:45,033 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 136 transitions, 1327 flow [2024-05-12 13:23:45,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:45,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:45,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:45,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:23:45,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:45,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1393891998, now seen corresponding path program 2 times [2024-05-12 13:23:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644266097] [2024-05-12 13:23:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644266097] [2024-05-12 13:23:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644266097] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:45,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:45,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448610163] [2024-05-12 13:23:45,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:45,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:45,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:45,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:45,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 136 transitions, 1327 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:45,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:45,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:45,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:46,136 INFO L124 PetriNetUnfolderBase]: 890/1606 cut-off events. [2024-05-12 13:23:46,137 INFO L125 PetriNetUnfolderBase]: For 13431/13431 co-relation queries the response was YES. [2024-05-12 13:23:46,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7638 conditions, 1606 events. 890/1606 cut-off events. For 13431/13431 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8488 event pairs, 204 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 7586. Up to 1136 conditions per place. [2024-05-12 13:23:46,146 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 104 selfloop transitions, 63 changer transitions 0/173 dead transitions. [2024-05-12 13:23:46,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 1902 flow [2024-05-12 13:23:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 13:23:46,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 13:23:46,147 INFO L175 Difference]: Start difference. First operand has 110 places, 136 transitions, 1327 flow. Second operand 8 states and 140 transitions. [2024-05-12 13:23:46,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 1902 flow [2024-05-12 13:23:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 1852 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:23:46,167 INFO L231 Difference]: Finished difference. Result has 113 places, 145 transitions, 1539 flow [2024-05-12 13:23:46,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1539, PETRI_PLACES=113, PETRI_TRANSITIONS=145} [2024-05-12 13:23:46,168 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-05-12 13:23:46,168 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 145 transitions, 1539 flow [2024-05-12 13:23:46,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:46,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:46,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:23:46,169 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:46,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1393898508, now seen corresponding path program 3 times [2024-05-12 13:23:46,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128651399] [2024-05-12 13:23:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128651399] [2024-05-12 13:23:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128651399] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:46,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019930401] [2024-05-12 13:23:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:46,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:46,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:46,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:46,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 145 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:46,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:46,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:46,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:47,138 INFO L124 PetriNetUnfolderBase]: 900/1606 cut-off events. [2024-05-12 13:23:47,139 INFO L125 PetriNetUnfolderBase]: For 15640/15640 co-relation queries the response was YES. [2024-05-12 13:23:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8130 conditions, 1606 events. 900/1606 cut-off events. For 15640/15640 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8410 event pairs, 214 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 8076. Up to 1148 conditions per place. [2024-05-12 13:23:47,147 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 108 selfloop transitions, 62 changer transitions 0/176 dead transitions. [2024-05-12 13:23:47,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 176 transitions, 2064 flow [2024-05-12 13:23:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 13:23:47,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-05-12 13:23:47,149 INFO L175 Difference]: Start difference. First operand has 113 places, 145 transitions, 1539 flow. Second operand 8 states and 141 transitions. [2024-05-12 13:23:47,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 176 transitions, 2064 flow [2024-05-12 13:23:47,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1954 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:47,172 INFO L231 Difference]: Finished difference. Result has 117 places, 148 transitions, 1602 flow [2024-05-12 13:23:47,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1602, PETRI_PLACES=117, PETRI_TRANSITIONS=148} [2024-05-12 13:23:47,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-05-12 13:23:47,173 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 148 transitions, 1602 flow [2024-05-12 13:23:47,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:47,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:47,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:47,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:23:47,173 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:47,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1021763004, now seen corresponding path program 4 times [2024-05-12 13:23:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:47,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778937208] [2024-05-12 13:23:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778937208] [2024-05-12 13:23:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778937208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:47,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267281142] [2024-05-12 13:23:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:47,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:47,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 148 transitions, 1602 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:47,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:47,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:47,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:48,132 INFO L124 PetriNetUnfolderBase]: 920/1642 cut-off events. [2024-05-12 13:23:48,132 INFO L125 PetriNetUnfolderBase]: For 16579/16597 co-relation queries the response was YES. [2024-05-12 13:23:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8428 conditions, 1642 events. 920/1642 cut-off events. For 16579/16597 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8622 event pairs, 208 based on Foata normal form. 7/1592 useless extension candidates. Maximal degree in co-relation 8372. Up to 1060 conditions per place. [2024-05-12 13:23:48,140 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 106 selfloop transitions, 82 changer transitions 0/194 dead transitions. [2024-05-12 13:23:48,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 194 transitions, 2365 flow [2024-05-12 13:23:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-05-12 13:23:48,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-05-12 13:23:48,153 INFO L175 Difference]: Start difference. First operand has 117 places, 148 transitions, 1602 flow. Second operand 8 states and 142 transitions. [2024-05-12 13:23:48,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 194 transitions, 2365 flow [2024-05-12 13:23:48,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 194 transitions, 2256 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:23:48,177 INFO L231 Difference]: Finished difference. Result has 122 places, 166 transitions, 1943 flow [2024-05-12 13:23:48,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1943, PETRI_PLACES=122, PETRI_TRANSITIONS=166} [2024-05-12 13:23:48,177 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-05-12 13:23:48,177 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 166 transitions, 1943 flow [2024-05-12 13:23:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:48,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:48,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:23:48,178 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:48,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash -966454416, now seen corresponding path program 5 times [2024-05-12 13:23:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323641090] [2024-05-12 13:23:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323641090] [2024-05-12 13:23:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323641090] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:48,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315184366] [2024-05-12 13:23:48,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:48,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:48,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 166 transitions, 1943 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:48,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:48,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:48,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:49,226 INFO L124 PetriNetUnfolderBase]: 942/1678 cut-off events. [2024-05-12 13:23:49,226 INFO L125 PetriNetUnfolderBase]: For 19457/19475 co-relation queries the response was YES. [2024-05-12 13:23:49,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1678 events. 942/1678 cut-off events. For 19457/19475 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8887 event pairs, 207 based on Foata normal form. 7/1627 useless extension candidates. Maximal degree in co-relation 9072. Up to 1079 conditions per place. [2024-05-12 13:23:49,235 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 109 selfloop transitions, 86 changer transitions 0/201 dead transitions. [2024-05-12 13:23:49,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 201 transitions, 2632 flow [2024-05-12 13:23:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:23:49,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 13:23:49,237 INFO L175 Difference]: Start difference. First operand has 122 places, 166 transitions, 1943 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:23:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 201 transitions, 2632 flow [2024-05-12 13:23:49,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 201 transitions, 2477 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:49,265 INFO L231 Difference]: Finished difference. Result has 129 places, 172 transitions, 2081 flow [2024-05-12 13:23:49,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2081, PETRI_PLACES=129, PETRI_TRANSITIONS=172} [2024-05-12 13:23:49,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-05-12 13:23:49,265 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 172 transitions, 2081 flow [2024-05-12 13:23:49,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:49,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:49,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:23:49,266 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash -966454168, now seen corresponding path program 2 times [2024-05-12 13:23:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402078195] [2024-05-12 13:23:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402078195] [2024-05-12 13:23:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402078195] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:49,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:49,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:49,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274290529] [2024-05-12 13:23:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:49,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:49,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:49,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 172 transitions, 2081 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:49,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:49,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:49,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:50,269 INFO L124 PetriNetUnfolderBase]: 960/1698 cut-off events. [2024-05-12 13:23:50,269 INFO L125 PetriNetUnfolderBase]: For 19919/19937 co-relation queries the response was YES. [2024-05-12 13:23:50,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9394 conditions, 1698 events. 960/1698 cut-off events. For 19919/19937 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8977 event pairs, 195 based on Foata normal form. 13/1658 useless extension candidates. Maximal degree in co-relation 9332. Up to 1366 conditions per place. [2024-05-12 13:23:50,277 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 176 selfloop transitions, 35 changer transitions 0/217 dead transitions. [2024-05-12 13:23:50,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 217 transitions, 2859 flow [2024-05-12 13:23:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 13:23:50,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 13:23:50,278 INFO L175 Difference]: Start difference. First operand has 129 places, 172 transitions, 2081 flow. Second operand 8 states and 139 transitions. [2024-05-12 13:23:50,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 217 transitions, 2859 flow [2024-05-12 13:23:50,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 217 transitions, 2678 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 13:23:50,311 INFO L231 Difference]: Finished difference. Result has 134 places, 178 transitions, 2070 flow [2024-05-12 13:23:50,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2070, PETRI_PLACES=134, PETRI_TRANSITIONS=178} [2024-05-12 13:23:50,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-05-12 13:23:50,312 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 178 transitions, 2070 flow [2024-05-12 13:23:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:50,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:50,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:50,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:23:50,313 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:50,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash -958179958, now seen corresponding path program 3 times [2024-05-12 13:23:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288089226] [2024-05-12 13:23:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:50,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288089226] [2024-05-12 13:23:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288089226] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971033425] [2024-05-12 13:23:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:50,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:50,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 178 transitions, 2070 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:50,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:50,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:50,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:51,383 INFO L124 PetriNetUnfolderBase]: 973/1715 cut-off events. [2024-05-12 13:23:51,383 INFO L125 PetriNetUnfolderBase]: For 20859/20877 co-relation queries the response was YES. [2024-05-12 13:23:51,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9530 conditions, 1715 events. 973/1715 cut-off events. For 20859/20877 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9035 event pairs, 193 based on Foata normal form. 13/1676 useless extension candidates. Maximal degree in co-relation 9466. Up to 1380 conditions per place. [2024-05-12 13:23:51,393 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 174 selfloop transitions, 39 changer transitions 0/219 dead transitions. [2024-05-12 13:23:51,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 219 transitions, 2811 flow [2024-05-12 13:23:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 13:23:51,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 13:23:51,394 INFO L175 Difference]: Start difference. First operand has 134 places, 178 transitions, 2070 flow. Second operand 8 states and 138 transitions. [2024-05-12 13:23:51,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 219 transitions, 2811 flow [2024-05-12 13:23:51,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 219 transitions, 2765 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 13:23:51,431 INFO L231 Difference]: Finished difference. Result has 139 places, 180 transitions, 2138 flow [2024-05-12 13:23:51,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2138, PETRI_PLACES=139, PETRI_TRANSITIONS=180} [2024-05-12 13:23:51,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-05-12 13:23:51,432 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 180 transitions, 2138 flow [2024-05-12 13:23:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:51,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:51,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:23:51,432 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:51,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2046148700, now seen corresponding path program 6 times [2024-05-12 13:23:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996916468] [2024-05-12 13:23:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996916468] [2024-05-12 13:23:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996916468] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484842385] [2024-05-12 13:23:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:52,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:52,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:52,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 180 transitions, 2138 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:52,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:52,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:52,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:52,416 INFO L124 PetriNetUnfolderBase]: 969/1726 cut-off events. [2024-05-12 13:23:52,416 INFO L125 PetriNetUnfolderBase]: For 21113/21131 co-relation queries the response was YES. [2024-05-12 13:23:52,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9579 conditions, 1726 events. 969/1726 cut-off events. For 21113/21131 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9198 event pairs, 193 based on Foata normal form. 7/1673 useless extension candidates. Maximal degree in co-relation 9513. Up to 1124 conditions per place. [2024-05-12 13:23:52,425 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 108 selfloop transitions, 93 changer transitions 0/207 dead transitions. [2024-05-12 13:23:52,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 207 transitions, 2696 flow [2024-05-12 13:23:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 13:23:52,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 13:23:52,429 INFO L175 Difference]: Start difference. First operand has 139 places, 180 transitions, 2138 flow. Second operand 8 states and 140 transitions. [2024-05-12 13:23:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 207 transitions, 2696 flow [2024-05-12 13:23:52,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 207 transitions, 2596 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:23:52,468 INFO L231 Difference]: Finished difference. Result has 142 places, 180 transitions, 2231 flow [2024-05-12 13:23:52,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2231, PETRI_PLACES=142, PETRI_TRANSITIONS=180} [2024-05-12 13:23:52,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-05-12 13:23:52,469 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 180 transitions, 2231 flow [2024-05-12 13:23:52,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:52,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:52,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:52,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:23:52,470 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:52,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -957883288, now seen corresponding path program 4 times [2024-05-12 13:23:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:52,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986602543] [2024-05-12 13:23:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986602543] [2024-05-12 13:23:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986602543] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:23:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717341631] [2024-05-12 13:23:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:23:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:23:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:23:53,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:53,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 180 transitions, 2231 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:53,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:53,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:53,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:53,509 INFO L124 PetriNetUnfolderBase]: 967/1709 cut-off events. [2024-05-12 13:23:53,509 INFO L125 PetriNetUnfolderBase]: For 21610/21628 co-relation queries the response was YES. [2024-05-12 13:23:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9664 conditions, 1709 events. 967/1709 cut-off events. For 21610/21628 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9035 event pairs, 191 based on Foata normal form. 13/1669 useless extension candidates. Maximal degree in co-relation 9597. Up to 1372 conditions per place. [2024-05-12 13:23:53,519 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 168 selfloop transitions, 43 changer transitions 0/217 dead transitions. [2024-05-12 13:23:53,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 217 transitions, 2890 flow [2024-05-12 13:23:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 13:23:53,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 13:23:53,524 INFO L175 Difference]: Start difference. First operand has 142 places, 180 transitions, 2231 flow. Second operand 8 states and 136 transitions. [2024-05-12 13:23:53,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 217 transitions, 2890 flow [2024-05-12 13:23:53,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 217 transitions, 2664 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:23:53,560 INFO L231 Difference]: Finished difference. Result has 143 places, 180 transitions, 2115 flow [2024-05-12 13:23:53,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2115, PETRI_PLACES=143, PETRI_TRANSITIONS=180} [2024-05-12 13:23:53,561 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-05-12 13:23:53,561 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 180 transitions, 2115 flow [2024-05-12 13:23:53,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:53,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:53,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:53,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:23:53,561 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:53,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash -957872376, now seen corresponding path program 1 times [2024-05-12 13:23:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:53,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427855875] [2024-05-12 13:23:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:54,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427855875] [2024-05-12 13:23:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427855875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:54,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:23:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283081310] [2024-05-12 13:23:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:23:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:23:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:23:54,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:54,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 180 transitions, 2115 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:54,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:54,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:54,763 INFO L124 PetriNetUnfolderBase]: 970/1722 cut-off events. [2024-05-12 13:23:54,763 INFO L125 PetriNetUnfolderBase]: For 21152/21152 co-relation queries the response was YES. [2024-05-12 13:23:54,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9504 conditions, 1722 events. 970/1722 cut-off events. For 21152/21152 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9126 event pairs, 213 based on Foata normal form. 1/1668 useless extension candidates. Maximal degree in co-relation 9437. Up to 1487 conditions per place. [2024-05-12 13:23:54,772 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 20 changer transitions 0/218 dead transitions. [2024-05-12 13:23:54,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 218 transitions, 2741 flow [2024-05-12 13:23:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:23:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:23:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-05-12 13:23:54,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-05-12 13:23:54,773 INFO L175 Difference]: Start difference. First operand has 143 places, 180 transitions, 2115 flow. Second operand 9 states and 148 transitions. [2024-05-12 13:23:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 218 transitions, 2741 flow [2024-05-12 13:23:54,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 218 transitions, 2661 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-05-12 13:23:54,803 INFO L231 Difference]: Finished difference. Result has 146 places, 183 transitions, 2117 flow [2024-05-12 13:23:54,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2117, PETRI_PLACES=146, PETRI_TRANSITIONS=183} [2024-05-12 13:23:54,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-05-12 13:23:54,804 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 183 transitions, 2117 flow [2024-05-12 13:23:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:54,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:54,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:23:54,805 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:54,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -380256664, now seen corresponding path program 1 times [2024-05-12 13:23:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321321265] [2024-05-12 13:23:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321321265] [2024-05-12 13:23:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321321265] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:55,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:23:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181780368] [2024-05-12 13:23:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:23:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:23:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:23:55,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 183 transitions, 2117 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:55,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:56,276 INFO L124 PetriNetUnfolderBase]: 958/1727 cut-off events. [2024-05-12 13:23:56,276 INFO L125 PetriNetUnfolderBase]: For 23772/23789 co-relation queries the response was YES. [2024-05-12 13:23:56,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9709 conditions, 1727 events. 958/1727 cut-off events. For 23772/23789 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9518 event pairs, 197 based on Foata normal form. 14/1677 useless extension candidates. Maximal degree in co-relation 9641. Up to 1325 conditions per place. [2024-05-12 13:23:56,287 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 156 selfloop transitions, 58 changer transitions 0/239 dead transitions. [2024-05-12 13:23:56,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 239 transitions, 3064 flow [2024-05-12 13:23:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:23:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:23:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 13:23:56,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 13:23:56,289 INFO L175 Difference]: Start difference. First operand has 146 places, 183 transitions, 2117 flow. Second operand 9 states and 156 transitions. [2024-05-12 13:23:56,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 239 transitions, 3064 flow [2024-05-12 13:23:56,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 239 transitions, 2934 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-05-12 13:23:56,322 INFO L231 Difference]: Finished difference. Result has 149 places, 208 transitions, 2556 flow [2024-05-12 13:23:56,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2556, PETRI_PLACES=149, PETRI_TRANSITIONS=208} [2024-05-12 13:23:56,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-05-12 13:23:56,323 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 208 transitions, 2556 flow [2024-05-12 13:23:56,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:56,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:56,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:56,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:23:56,323 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:56,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash -380195284, now seen corresponding path program 2 times [2024-05-12 13:23:56,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:56,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295795376] [2024-05-12 13:23:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:56,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295795376] [2024-05-12 13:23:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295795376] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:23:57,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281655825] [2024-05-12 13:23:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:23:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:23:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:23:57,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:23:57,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 208 transitions, 2556 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:57,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:57,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:23:57,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:57,812 INFO L124 PetriNetUnfolderBase]: 1024/1866 cut-off events. [2024-05-12 13:23:57,812 INFO L125 PetriNetUnfolderBase]: For 26440/26453 co-relation queries the response was YES. [2024-05-12 13:23:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 1866 events. 1024/1866 cut-off events. For 26440/26453 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10478 event pairs, 204 based on Foata normal form. 14/1814 useless extension candidates. Maximal degree in co-relation 10723. Up to 1394 conditions per place. [2024-05-12 13:23:57,821 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 161 selfloop transitions, 70 changer transitions 0/256 dead transitions. [2024-05-12 13:23:57,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 256 transitions, 3475 flow [2024-05-12 13:23:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:23:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:23:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 13:23:57,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 13:23:57,823 INFO L175 Difference]: Start difference. First operand has 149 places, 208 transitions, 2556 flow. Second operand 9 states and 156 transitions. [2024-05-12 13:23:57,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 256 transitions, 3475 flow [2024-05-12 13:23:57,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 256 transitions, 3396 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-05-12 13:23:57,865 INFO L231 Difference]: Finished difference. Result has 157 places, 225 transitions, 2992 flow [2024-05-12 13:23:57,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2992, PETRI_PLACES=157, PETRI_TRANSITIONS=225} [2024-05-12 13:23:57,866 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-05-12 13:23:57,866 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 225 transitions, 2992 flow [2024-05-12 13:23:57,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:57,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:57,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:57,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:23:57,866 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:57,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1623970677, now seen corresponding path program 1 times [2024-05-12 13:23:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95671316] [2024-05-12 13:23:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:57,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95671316] [2024-05-12 13:23:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95671316] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:58,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:58,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:23:58,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940748782] [2024-05-12 13:23:58,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:58,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:23:58,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:58,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:23:58,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:23:58,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:58,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 225 transitions, 2992 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:58,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:58,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:58,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:23:59,155 INFO L124 PetriNetUnfolderBase]: 1098/1940 cut-off events. [2024-05-12 13:23:59,155 INFO L125 PetriNetUnfolderBase]: For 28620/28620 co-relation queries the response was YES. [2024-05-12 13:23:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11415 conditions, 1940 events. 1098/1940 cut-off events. For 28620/28620 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10521 event pairs, 218 based on Foata normal form. 1/1883 useless extension candidates. Maximal degree in co-relation 11340. Up to 1471 conditions per place. [2024-05-12 13:23:59,167 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 161 selfloop transitions, 89 changer transitions 0/256 dead transitions. [2024-05-12 13:23:59,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 256 transitions, 3656 flow [2024-05-12 13:23:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:23:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:23:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 13:23:59,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 13:23:59,168 INFO L175 Difference]: Start difference. First operand has 157 places, 225 transitions, 2992 flow. Second operand 8 states and 140 transitions. [2024-05-12 13:23:59,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 256 transitions, 3656 flow [2024-05-12 13:23:59,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 256 transitions, 3470 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-05-12 13:23:59,214 INFO L231 Difference]: Finished difference. Result has 159 places, 228 transitions, 3060 flow [2024-05-12 13:23:59,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=159, PETRI_TRANSITIONS=228} [2024-05-12 13:23:59,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-05-12 13:23:59,215 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 228 transitions, 3060 flow [2024-05-12 13:23:59,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:59,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:23:59,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:23:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:23:59,216 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:23:59,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:23:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash -377363992, now seen corresponding path program 1 times [2024-05-12 13:23:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:23:59,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895454066] [2024-05-12 13:23:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:23:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:23:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:23:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:23:59,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:23:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895454066] [2024-05-12 13:23:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895454066] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:23:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:23:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:23:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418413851] [2024-05-12 13:23:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:23:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:23:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:23:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:23:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:23:59,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:23:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 228 transitions, 3060 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:23:59,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:23:59,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:23:59,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:00,376 INFO L124 PetriNetUnfolderBase]: 1118/1969 cut-off events. [2024-05-12 13:24:00,376 INFO L125 PetriNetUnfolderBase]: For 30562/30562 co-relation queries the response was YES. [2024-05-12 13:24:00,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 1969 events. 1118/1969 cut-off events. For 30562/30562 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10716 event pairs, 212 based on Foata normal form. 2/1913 useless extension candidates. Maximal degree in co-relation 11539. Up to 1533 conditions per place. [2024-05-12 13:24:00,387 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 182 selfloop transitions, 76 changer transitions 0/264 dead transitions. [2024-05-12 13:24:00,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 264 transitions, 3750 flow [2024-05-12 13:24:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 13:24:00,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-05-12 13:24:00,389 INFO L175 Difference]: Start difference. First operand has 159 places, 228 transitions, 3060 flow. Second operand 9 states and 155 transitions. [2024-05-12 13:24:00,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 264 transitions, 3750 flow [2024-05-12 13:24:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 264 transitions, 3582 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:00,438 INFO L231 Difference]: Finished difference. Result has 162 places, 231 transitions, 3096 flow [2024-05-12 13:24:00,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3096, PETRI_PLACES=162, PETRI_TRANSITIONS=231} [2024-05-12 13:24:00,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-05-12 13:24:00,438 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 231 transitions, 3096 flow [2024-05-12 13:24:00,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:00,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:00,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:24:00,439 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:00,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash 793199070, now seen corresponding path program 3 times [2024-05-12 13:24:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:00,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009254025] [2024-05-12 13:24:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009254025] [2024-05-12 13:24:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009254025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531892943] [2024-05-12 13:24:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:01,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:01,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 231 transitions, 3096 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:01,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:01,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:01,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:01,751 INFO L124 PetriNetUnfolderBase]: 1049/1908 cut-off events. [2024-05-12 13:24:01,751 INFO L125 PetriNetUnfolderBase]: For 32767/32792 co-relation queries the response was YES. [2024-05-12 13:24:01,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11539 conditions, 1908 events. 1049/1908 cut-off events. For 32767/32792 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10773 event pairs, 195 based on Foata normal form. 26/1873 useless extension candidates. Maximal degree in co-relation 11462. Up to 1359 conditions per place. [2024-05-12 13:24:01,763 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 147 selfloop transitions, 86 changer transitions 0/259 dead transitions. [2024-05-12 13:24:01,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 259 transitions, 3704 flow [2024-05-12 13:24:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:24:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:24:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:24:01,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 13:24:01,764 INFO L175 Difference]: Start difference. First operand has 162 places, 231 transitions, 3096 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:24:01,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 259 transitions, 3704 flow [2024-05-12 13:24:01,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 259 transitions, 3522 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:01,811 INFO L231 Difference]: Finished difference. Result has 163 places, 233 transitions, 3135 flow [2024-05-12 13:24:01,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3135, PETRI_PLACES=163, PETRI_TRANSITIONS=233} [2024-05-12 13:24:01,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-05-12 13:24:01,811 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 233 transitions, 3135 flow [2024-05-12 13:24:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:01,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:01,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:24:01,811 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:01,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -261179092, now seen corresponding path program 2 times [2024-05-12 13:24:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:01,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993670987] [2024-05-12 13:24:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:01,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993670987] [2024-05-12 13:24:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993670987] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:02,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648135941] [2024-05-12 13:24:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:02,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:02,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 233 transitions, 3135 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:02,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:02,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:02,972 INFO L124 PetriNetUnfolderBase]: 1193/2085 cut-off events. [2024-05-12 13:24:02,972 INFO L125 PetriNetUnfolderBase]: For 36892/36892 co-relation queries the response was YES. [2024-05-12 13:24:02,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12656 conditions, 2085 events. 1193/2085 cut-off events. For 36892/36892 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11429 event pairs, 234 based on Foata normal form. 2/2029 useless extension candidates. Maximal degree in co-relation 12578. Up to 1414 conditions per place. [2024-05-12 13:24:02,986 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 171 selfloop transitions, 101 changer transitions 0/278 dead transitions. [2024-05-12 13:24:02,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 278 transitions, 4117 flow [2024-05-12 13:24:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 13:24:02,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 13:24:02,987 INFO L175 Difference]: Start difference. First operand has 163 places, 233 transitions, 3135 flow. Second operand 9 states and 160 transitions. [2024-05-12 13:24:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 278 transitions, 4117 flow [2024-05-12 13:24:03,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 278 transitions, 3912 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:03,048 INFO L231 Difference]: Finished difference. Result has 167 places, 245 transitions, 3386 flow [2024-05-12 13:24:03,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3386, PETRI_PLACES=167, PETRI_TRANSITIONS=245} [2024-05-12 13:24:03,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-05-12 13:24:03,048 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 245 transitions, 3386 flow [2024-05-12 13:24:03,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:03,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:03,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:03,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:24:03,049 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:03,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash -260977282, now seen corresponding path program 3 times [2024-05-12 13:24:03,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:03,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327580039] [2024-05-12 13:24:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327580039] [2024-05-12 13:24:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327580039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992335550] [2024-05-12 13:24:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:03,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:03,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:03,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 245 transitions, 3386 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:03,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:03,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:03,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:04,204 INFO L124 PetriNetUnfolderBase]: 1213/2115 cut-off events. [2024-05-12 13:24:04,204 INFO L125 PetriNetUnfolderBase]: For 39602/39602 co-relation queries the response was YES. [2024-05-12 13:24:04,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13147 conditions, 2115 events. 1213/2115 cut-off events. For 39602/39602 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11632 event pairs, 213 based on Foata normal form. 2/2059 useless extension candidates. Maximal degree in co-relation 13067. Up to 1431 conditions per place. [2024-05-12 13:24:04,217 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 162 selfloop transitions, 113 changer transitions 0/281 dead transitions. [2024-05-12 13:24:04,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 281 transitions, 4254 flow [2024-05-12 13:24:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 13:24:04,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 13:24:04,219 INFO L175 Difference]: Start difference. First operand has 167 places, 245 transitions, 3386 flow. Second operand 9 states and 159 transitions. [2024-05-12 13:24:04,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 281 transitions, 4254 flow [2024-05-12 13:24:04,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 281 transitions, 4148 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:04,286 INFO L231 Difference]: Finished difference. Result has 172 places, 248 transitions, 3566 flow [2024-05-12 13:24:04,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3566, PETRI_PLACES=172, PETRI_TRANSITIONS=248} [2024-05-12 13:24:04,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-05-12 13:24:04,287 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 248 transitions, 3566 flow [2024-05-12 13:24:04,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:04,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:04,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:04,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:24:04,288 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:04,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1629692533, now seen corresponding path program 1 times [2024-05-12 13:24:04,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:04,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493091537] [2024-05-12 13:24:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493091537] [2024-05-12 13:24:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493091537] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638529193] [2024-05-12 13:24:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:04,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:04,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 248 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:04,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:04,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:04,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:05,463 INFO L124 PetriNetUnfolderBase]: 1226/2125 cut-off events. [2024-05-12 13:24:05,463 INFO L125 PetriNetUnfolderBase]: For 41967/41967 co-relation queries the response was YES. [2024-05-12 13:24:05,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13607 conditions, 2125 events. 1226/2125 cut-off events. For 41967/41967 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11638 event pairs, 258 based on Foata normal form. 1/2072 useless extension candidates. Maximal degree in co-relation 13525. Up to 1871 conditions per place. [2024-05-12 13:24:05,477 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 252 selfloop transitions, 28 changer transitions 0/286 dead transitions. [2024-05-12 13:24:05,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 286 transitions, 4386 flow [2024-05-12 13:24:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-05-12 13:24:05,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-05-12 13:24:05,480 INFO L175 Difference]: Start difference. First operand has 172 places, 248 transitions, 3566 flow. Second operand 9 states and 149 transitions. [2024-05-12 13:24:05,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 286 transitions, 4386 flow [2024-05-12 13:24:05,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 286 transitions, 4129 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:05,554 INFO L231 Difference]: Finished difference. Result has 175 places, 250 transitions, 3413 flow [2024-05-12 13:24:05,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3413, PETRI_PLACES=175, PETRI_TRANSITIONS=250} [2024-05-12 13:24:05,554 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-05-12 13:24:05,555 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 250 transitions, 3413 flow [2024-05-12 13:24:05,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:05,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:05,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:05,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:24:05,555 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:05,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -260969842, now seen corresponding path program 4 times [2024-05-12 13:24:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781695399] [2024-05-12 13:24:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781695399] [2024-05-12 13:24:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781695399] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:06,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:06,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490449834] [2024-05-12 13:24:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:06,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:06,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 250 transitions, 3413 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:06,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:06,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:06,709 INFO L124 PetriNetUnfolderBase]: 1222/2129 cut-off events. [2024-05-12 13:24:06,709 INFO L125 PetriNetUnfolderBase]: For 40110/40110 co-relation queries the response was YES. [2024-05-12 13:24:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13324 conditions, 2129 events. 1222/2129 cut-off events. For 40110/40110 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11691 event pairs, 212 based on Foata normal form. 2/2073 useless extension candidates. Maximal degree in co-relation 13241. Up to 1448 conditions per place. [2024-05-12 13:24:06,724 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 160 selfloop transitions, 116 changer transitions 0/282 dead transitions. [2024-05-12 13:24:06,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 282 transitions, 4165 flow [2024-05-12 13:24:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 13:24:06,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 13:24:06,725 INFO L175 Difference]: Start difference. First operand has 175 places, 250 transitions, 3413 flow. Second operand 9 states and 157 transitions. [2024-05-12 13:24:06,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 282 transitions, 4165 flow [2024-05-12 13:24:06,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 282 transitions, 4067 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:06,799 INFO L231 Difference]: Finished difference. Result has 178 places, 250 transitions, 3554 flow [2024-05-12 13:24:06,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3554, PETRI_PLACES=178, PETRI_TRANSITIONS=250} [2024-05-12 13:24:06,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-05-12 13:24:06,799 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 250 transitions, 3554 flow [2024-05-12 13:24:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:06,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:06,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:24:06,800 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:06,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash 104478110, now seen corresponding path program 4 times [2024-05-12 13:24:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704292821] [2024-05-12 13:24:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:07,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704292821] [2024-05-12 13:24:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704292821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:07,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:07,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116563993] [2024-05-12 13:24:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:07,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:07,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:07,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:07,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 250 transitions, 3554 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:07,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:07,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:08,121 INFO L124 PetriNetUnfolderBase]: 1133/2008 cut-off events. [2024-05-12 13:24:08,121 INFO L125 PetriNetUnfolderBase]: For 43179/43186 co-relation queries the response was YES. [2024-05-12 13:24:08,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13218 conditions, 2008 events. 1133/2008 cut-off events. For 43179/43186 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11379 event pairs, 170 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 13134. Up to 1449 conditions per place. [2024-05-12 13:24:08,135 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 157 selfloop transitions, 94 changer transitions 0/277 dead transitions. [2024-05-12 13:24:08,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 277 transitions, 4210 flow [2024-05-12 13:24:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:24:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:24:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-05-12 13:24:08,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-05-12 13:24:08,136 INFO L175 Difference]: Start difference. First operand has 178 places, 250 transitions, 3554 flow. Second operand 8 states and 143 transitions. [2024-05-12 13:24:08,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 277 transitions, 4210 flow [2024-05-12 13:24:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 277 transitions, 3982 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:08,216 INFO L231 Difference]: Finished difference. Result has 179 places, 252 transitions, 3569 flow [2024-05-12 13:24:08,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3569, PETRI_PLACES=179, PETRI_TRANSITIONS=252} [2024-05-12 13:24:08,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-05-12 13:24:08,217 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 252 transitions, 3569 flow [2024-05-12 13:24:08,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:08,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:08,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:08,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:24:08,218 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:08,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash 104484062, now seen corresponding path program 5 times [2024-05-12 13:24:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:08,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175286761] [2024-05-12 13:24:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:08,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:08,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175286761] [2024-05-12 13:24:08,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175286761] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:08,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:08,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015084770] [2024-05-12 13:24:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:08,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:08,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 252 transitions, 3569 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:08,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:08,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:08,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:09,358 INFO L124 PetriNetUnfolderBase]: 1257/2181 cut-off events. [2024-05-12 13:24:09,358 INFO L125 PetriNetUnfolderBase]: For 45478/45478 co-relation queries the response was YES. [2024-05-12 13:24:09,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13921 conditions, 2181 events. 1257/2181 cut-off events. For 45478/45478 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11996 event pairs, 232 based on Foata normal form. 2/2123 useless extension candidates. Maximal degree in co-relation 13836. Up to 1259 conditions per place. [2024-05-12 13:24:09,373 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 160 selfloop transitions, 138 changer transitions 0/304 dead transitions. [2024-05-12 13:24:09,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 304 transitions, 4724 flow [2024-05-12 13:24:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:24:09,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 13:24:09,374 INFO L175 Difference]: Start difference. First operand has 179 places, 252 transitions, 3569 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:24:09,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 304 transitions, 4724 flow [2024-05-12 13:24:09,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 304 transitions, 4497 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:09,452 INFO L231 Difference]: Finished difference. Result has 184 places, 272 transitions, 4027 flow [2024-05-12 13:24:09,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4027, PETRI_PLACES=184, PETRI_TRANSITIONS=272} [2024-05-12 13:24:09,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-05-12 13:24:09,452 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 272 transitions, 4027 flow [2024-05-12 13:24:09,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:09,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:09,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:24:09,453 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:09,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 111835712, now seen corresponding path program 6 times [2024-05-12 13:24:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:09,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163552334] [2024-05-12 13:24:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:10,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:10,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163552334] [2024-05-12 13:24:10,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163552334] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:10,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:10,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906505484] [2024-05-12 13:24:10,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:10,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:10,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:10,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:10,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 272 transitions, 4027 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:10,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:10,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:10,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:10,676 INFO L124 PetriNetUnfolderBase]: 1303/2256 cut-off events. [2024-05-12 13:24:10,677 INFO L125 PetriNetUnfolderBase]: For 50723/50723 co-relation queries the response was YES. [2024-05-12 13:24:10,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15040 conditions, 2256 events. 1303/2256 cut-off events. For 50723/50723 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12522 event pairs, 191 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 14952. Up to 1298 conditions per place. [2024-05-12 13:24:10,693 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 152 selfloop transitions, 155 changer transitions 0/313 dead transitions. [2024-05-12 13:24:10,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 313 transitions, 5130 flow [2024-05-12 13:24:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 13:24:10,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 13:24:10,695 INFO L175 Difference]: Start difference. First operand has 184 places, 272 transitions, 4027 flow. Second operand 9 states and 160 transitions. [2024-05-12 13:24:10,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 313 transitions, 5130 flow [2024-05-12 13:24:10,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 313 transitions, 4900 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-05-12 13:24:10,801 INFO L231 Difference]: Finished difference. Result has 191 places, 281 transitions, 4328 flow [2024-05-12 13:24:10,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3865, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4328, PETRI_PLACES=191, PETRI_TRANSITIONS=281} [2024-05-12 13:24:10,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-05-12 13:24:10,801 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 281 transitions, 4328 flow [2024-05-12 13:24:10,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:10,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:10,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:24:10,802 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:10,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash 104685872, now seen corresponding path program 7 times [2024-05-12 13:24:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:10,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506073920] [2024-05-12 13:24:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506073920] [2024-05-12 13:24:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506073920] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504559630] [2024-05-12 13:24:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:11,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:11,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:11,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 281 transitions, 4328 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:11,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:11,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:11,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:11,963 INFO L124 PetriNetUnfolderBase]: 1323/2283 cut-off events. [2024-05-12 13:24:11,963 INFO L125 PetriNetUnfolderBase]: For 52308/52308 co-relation queries the response was YES. [2024-05-12 13:24:11,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15472 conditions, 2283 events. 1323/2283 cut-off events. For 52308/52308 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12620 event pairs, 232 based on Foata normal form. 2/2224 useless extension candidates. Maximal degree in co-relation 15381. Up to 1315 conditions per place. [2024-05-12 13:24:11,981 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 167 selfloop transitions, 145 changer transitions 0/318 dead transitions. [2024-05-12 13:24:11,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 318 transitions, 5386 flow [2024-05-12 13:24:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-05-12 13:24:11,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-05-12 13:24:11,982 INFO L175 Difference]: Start difference. First operand has 191 places, 281 transitions, 4328 flow. Second operand 9 states and 165 transitions. [2024-05-12 13:24:11,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 318 transitions, 5386 flow [2024-05-12 13:24:12,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 318 transitions, 5109 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:12,084 INFO L231 Difference]: Finished difference. Result has 196 places, 284 transitions, 4403 flow [2024-05-12 13:24:12,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4403, PETRI_PLACES=196, PETRI_TRANSITIONS=284} [2024-05-12 13:24:12,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-05-12 13:24:12,084 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 284 transitions, 4403 flow [2024-05-12 13:24:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:12,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:12,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:12,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:24:12,085 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:12,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash 104693312, now seen corresponding path program 8 times [2024-05-12 13:24:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:12,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447220399] [2024-05-12 13:24:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:12,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447220399] [2024-05-12 13:24:12,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447220399] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:12,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:12,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909975914] [2024-05-12 13:24:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:12,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:12,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:12,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 284 transitions, 4403 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:12,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:12,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:12,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:13,232 INFO L124 PetriNetUnfolderBase]: 1319/2280 cut-off events. [2024-05-12 13:24:13,232 INFO L125 PetriNetUnfolderBase]: For 52765/52765 co-relation queries the response was YES. [2024-05-12 13:24:13,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 2280 events. 1319/2280 cut-off events. For 52765/52765 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12641 event pairs, 230 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 15291. Up to 1312 conditions per place. [2024-05-12 13:24:13,248 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 165 selfloop transitions, 146 changer transitions 0/317 dead transitions. [2024-05-12 13:24:13,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 317 transitions, 5327 flow [2024-05-12 13:24:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:24:13,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 13:24:13,250 INFO L175 Difference]: Start difference. First operand has 196 places, 284 transitions, 4403 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:24:13,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 317 transitions, 5327 flow [2024-05-12 13:24:13,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 317 transitions, 4949 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:13,347 INFO L231 Difference]: Finished difference. Result has 198 places, 284 transitions, 4324 flow [2024-05-12 13:24:13,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4025, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=198, PETRI_TRANSITIONS=284} [2024-05-12 13:24:13,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-05-12 13:24:13,348 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 284 transitions, 4324 flow [2024-05-12 13:24:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:13,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:13,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:13,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:24:13,348 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:13,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1609670827, now seen corresponding path program 2 times [2024-05-12 13:24:13,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:13,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301830588] [2024-05-12 13:24:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:13,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301830588] [2024-05-12 13:24:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301830588] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:13,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:13,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680202834] [2024-05-12 13:24:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:14,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:14,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 284 transitions, 4324 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:14,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:14,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:14,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:14,505 INFO L124 PetriNetUnfolderBase]: 1337/2300 cut-off events. [2024-05-12 13:24:14,505 INFO L125 PetriNetUnfolderBase]: For 53489/53489 co-relation queries the response was YES. [2024-05-12 13:24:14,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15515 conditions, 2300 events. 1337/2300 cut-off events. For 53489/53489 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12744 event pairs, 231 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 15423. Up to 1873 conditions per place. [2024-05-12 13:24:14,522 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 50 changer transitions 0/335 dead transitions. [2024-05-12 13:24:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 335 transitions, 5565 flow [2024-05-12 13:24:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 13:24:14,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 13:24:14,523 INFO L175 Difference]: Start difference. First operand has 198 places, 284 transitions, 4324 flow. Second operand 9 states and 157 transitions. [2024-05-12 13:24:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 335 transitions, 5565 flow [2024-05-12 13:24:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 335 transitions, 5250 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:14,634 INFO L231 Difference]: Finished difference. Result has 200 places, 288 transitions, 4214 flow [2024-05-12 13:24:14,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4214, PETRI_PLACES=200, PETRI_TRANSITIONS=288} [2024-05-12 13:24:14,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2024-05-12 13:24:14,635 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 288 transitions, 4214 flow [2024-05-12 13:24:14,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:14,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:14,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:24:14,635 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:14,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1343973826, now seen corresponding path program 9 times [2024-05-12 13:24:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181574821] [2024-05-12 13:24:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181574821] [2024-05-12 13:24:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181574821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321050837] [2024-05-12 13:24:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:15,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:15,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 288 transitions, 4214 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:15,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:15,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:15,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:15,828 INFO L124 PetriNetUnfolderBase]: 1359/2344 cut-off events. [2024-05-12 13:24:15,828 INFO L125 PetriNetUnfolderBase]: For 53861/53861 co-relation queries the response was YES. [2024-05-12 13:24:15,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15515 conditions, 2344 events. 1359/2344 cut-off events. For 53861/53861 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13035 event pairs, 186 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 15422. Up to 1359 conditions per place. [2024-05-12 13:24:15,845 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 147 selfloop transitions, 172 changer transitions 0/325 dead transitions. [2024-05-12 13:24:15,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 325 transitions, 5148 flow [2024-05-12 13:24:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 13:24:15,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 13:24:15,847 INFO L175 Difference]: Start difference. First operand has 200 places, 288 transitions, 4214 flow. Second operand 9 states and 158 transitions. [2024-05-12 13:24:15,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 325 transitions, 5148 flow [2024-05-12 13:24:15,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 325 transitions, 5065 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:15,948 INFO L231 Difference]: Finished difference. Result has 205 places, 294 transitions, 4567 flow [2024-05-12 13:24:15,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4567, PETRI_PLACES=205, PETRI_TRANSITIONS=294} [2024-05-12 13:24:15,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-05-12 13:24:15,949 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 294 transitions, 4567 flow [2024-05-12 13:24:15,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:15,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:15,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:15,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:24:15,949 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:15,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash 370717301, now seen corresponding path program 3 times [2024-05-12 13:24:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565772539] [2024-05-12 13:24:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565772539] [2024-05-12 13:24:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565772539] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:16,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887684438] [2024-05-12 13:24:16,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:16,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:16,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 294 transitions, 4567 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:16,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:16,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:16,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:17,266 INFO L124 PetriNetUnfolderBase]: 1372/2360 cut-off events. [2024-05-12 13:24:17,266 INFO L125 PetriNetUnfolderBase]: For 56717/56717 co-relation queries the response was YES. [2024-05-12 13:24:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16242 conditions, 2360 events. 1372/2360 cut-off events. For 56717/56717 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13077 event pairs, 282 based on Foata normal form. 1/2304 useless extension candidates. Maximal degree in co-relation 16146. Up to 2105 conditions per place. [2024-05-12 13:24:17,283 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 303 selfloop transitions, 22 changer transitions 0/331 dead transitions. [2024-05-12 13:24:17,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 331 transitions, 5494 flow [2024-05-12 13:24:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-05-12 13:24:17,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-05-12 13:24:17,284 INFO L175 Difference]: Start difference. First operand has 205 places, 294 transitions, 4567 flow. Second operand 9 states and 148 transitions. [2024-05-12 13:24:17,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 331 transitions, 5494 flow [2024-05-12 13:24:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 331 transitions, 5160 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:17,403 INFO L231 Difference]: Finished difference. Result has 209 places, 296 transitions, 4327 flow [2024-05-12 13:24:17,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4327, PETRI_PLACES=209, PETRI_TRANSITIONS=296} [2024-05-12 13:24:17,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-05-12 13:24:17,403 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 296 transitions, 4327 flow [2024-05-12 13:24:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:17,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:17,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:24:17,404 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:17,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:17,404 INFO L85 PathProgramCache]: Analyzing trace with hash 994168625, now seen corresponding path program 4 times [2024-05-12 13:24:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:17,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439429832] [2024-05-12 13:24:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:17,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:18,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439429832] [2024-05-12 13:24:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439429832] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:18,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696562458] [2024-05-12 13:24:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:18,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:18,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 296 transitions, 4327 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:18,571 INFO L124 PetriNetUnfolderBase]: 1385/2375 cut-off events. [2024-05-12 13:24:18,571 INFO L125 PetriNetUnfolderBase]: For 56267/56267 co-relation queries the response was YES. [2024-05-12 13:24:18,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15910 conditions, 2375 events. 1385/2375 cut-off events. For 56267/56267 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13245 event pairs, 226 based on Foata normal form. 1/2318 useless extension candidates. Maximal degree in co-relation 15813. Up to 1934 conditions per place. [2024-05-12 13:24:18,589 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 280 selfloop transitions, 60 changer transitions 0/346 dead transitions. [2024-05-12 13:24:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 346 transitions, 5547 flow [2024-05-12 13:24:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 13:24:18,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-05-12 13:24:18,590 INFO L175 Difference]: Start difference. First operand has 209 places, 296 transitions, 4327 flow. Second operand 9 states and 155 transitions. [2024-05-12 13:24:18,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 346 transitions, 5547 flow [2024-05-12 13:24:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 346 transitions, 5480 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:18,718 INFO L231 Difference]: Finished difference. Result has 211 places, 298 transitions, 4424 flow [2024-05-12 13:24:18,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4260, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4424, PETRI_PLACES=211, PETRI_TRANSITIONS=298} [2024-05-12 13:24:18,718 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-05-12 13:24:18,718 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 298 transitions, 4424 flow [2024-05-12 13:24:18,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:18,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:18,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:24:18,719 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 361194101, now seen corresponding path program 5 times [2024-05-12 13:24:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334991889] [2024-05-12 13:24:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334991889] [2024-05-12 13:24:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334991889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:19,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:19,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883894263] [2024-05-12 13:24:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:19,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:19,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 298 transitions, 4424 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:19,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:19,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:19,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:19,926 INFO L124 PetriNetUnfolderBase]: 1383/2373 cut-off events. [2024-05-12 13:24:19,926 INFO L125 PetriNetUnfolderBase]: For 56952/56952 co-relation queries the response was YES. [2024-05-12 13:24:19,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15965 conditions, 2373 events. 1383/2373 cut-off events. For 56952/56952 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13201 event pairs, 226 based on Foata normal form. 1/2315 useless extension candidates. Maximal degree in co-relation 15867. Up to 1932 conditions per place. [2024-05-12 13:24:19,945 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 281 selfloop transitions, 58 changer transitions 0/345 dead transitions. [2024-05-12 13:24:19,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 345 transitions, 5514 flow [2024-05-12 13:24:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:24:19,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 13:24:19,946 INFO L175 Difference]: Start difference. First operand has 211 places, 298 transitions, 4424 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:24:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 345 transitions, 5514 flow [2024-05-12 13:24:20,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 345 transitions, 5366 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:20,099 INFO L231 Difference]: Finished difference. Result has 216 places, 299 transitions, 4414 flow [2024-05-12 13:24:20,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4414, PETRI_PLACES=216, PETRI_TRANSITIONS=299} [2024-05-12 13:24:20,100 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-05-12 13:24:20,100 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 299 transitions, 4414 flow [2024-05-12 13:24:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:20,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:20,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:20,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:24:20,100 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:20,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:20,101 INFO L85 PathProgramCache]: Analyzing trace with hash 361193822, now seen corresponding path program 10 times [2024-05-12 13:24:20,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:20,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39752776] [2024-05-12 13:24:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:20,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39752776] [2024-05-12 13:24:20,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39752776] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:20,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:20,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:20,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261074409] [2024-05-12 13:24:20,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:20,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:20,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:20,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 299 transitions, 4414 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:20,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:20,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:20,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:21,380 INFO L124 PetriNetUnfolderBase]: 1379/2382 cut-off events. [2024-05-12 13:24:21,380 INFO L125 PetriNetUnfolderBase]: For 55546/55546 co-relation queries the response was YES. [2024-05-12 13:24:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15742 conditions, 2382 events. 1379/2382 cut-off events. For 55546/55546 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13336 event pairs, 195 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 15642. Up to 1393 conditions per place. [2024-05-12 13:24:21,399 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 163 selfloop transitions, 162 changer transitions 0/331 dead transitions. [2024-05-12 13:24:21,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 331 transitions, 5296 flow [2024-05-12 13:24:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:24:21,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 13:24:21,401 INFO L175 Difference]: Start difference. First operand has 216 places, 299 transitions, 4414 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:24:21,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 331 transitions, 5296 flow [2024-05-12 13:24:21,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 331 transitions, 5112 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:21,552 INFO L231 Difference]: Finished difference. Result has 217 places, 299 transitions, 4561 flow [2024-05-12 13:24:21,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4561, PETRI_PLACES=217, PETRI_TRANSITIONS=299} [2024-05-12 13:24:21,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-05-12 13:24:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 299 transitions, 4561 flow [2024-05-12 13:24:21,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:21,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:21,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:21,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:24:21,553 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:21,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1084868024, now seen corresponding path program 5 times [2024-05-12 13:24:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349159344] [2024-05-12 13:24:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349159344] [2024-05-12 13:24:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349159344] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:22,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:22,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183620317] [2024-05-12 13:24:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:22,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:22,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:22,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 299 transitions, 4561 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:22,937 INFO L124 PetriNetUnfolderBase]: 1324/2343 cut-off events. [2024-05-12 13:24:22,937 INFO L125 PetriNetUnfolderBase]: For 61898/61938 co-relation queries the response was YES. [2024-05-12 13:24:22,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15942 conditions, 2343 events. 1324/2343 cut-off events. For 61898/61938 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13451 event pairs, 224 based on Foata normal form. 29/2297 useless extension candidates. Maximal degree in co-relation 15840. Up to 1868 conditions per place. [2024-05-12 13:24:22,958 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 252 selfloop transitions, 77 changer transitions 0/355 dead transitions. [2024-05-12 13:24:22,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 355 transitions, 5673 flow [2024-05-12 13:24:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-05-12 13:24:22,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 13:24:22,971 INFO L175 Difference]: Start difference. First operand has 217 places, 299 transitions, 4561 flow. Second operand 9 states and 162 transitions. [2024-05-12 13:24:22,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 355 transitions, 5673 flow [2024-05-12 13:24:23,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 355 transitions, 5319 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:23,120 INFO L231 Difference]: Finished difference. Result has 220 places, 320 transitions, 4752 flow [2024-05-12 13:24:23,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4752, PETRI_PLACES=220, PETRI_TRANSITIONS=320} [2024-05-12 13:24:23,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-05-12 13:24:23,121 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 320 transitions, 4752 flow [2024-05-12 13:24:23,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:23,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:23,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:23,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:24:23,122 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:23,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 745685974, now seen corresponding path program 6 times [2024-05-12 13:24:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:23,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259596083] [2024-05-12 13:24:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259596083] [2024-05-12 13:24:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259596083] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:23,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679202946] [2024-05-12 13:24:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:23,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:23,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 320 transitions, 4752 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:23,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:23,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:23,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:24,511 INFO L124 PetriNetUnfolderBase]: 1384/2435 cut-off events. [2024-05-12 13:24:24,511 INFO L125 PetriNetUnfolderBase]: For 64716/64760 co-relation queries the response was YES. [2024-05-12 13:24:24,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16829 conditions, 2435 events. 1384/2435 cut-off events. For 64716/64760 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14047 event pairs, 247 based on Foata normal form. 29/2385 useless extension candidates. Maximal degree in co-relation 16725. Up to 1935 conditions per place. [2024-05-12 13:24:24,532 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 247 selfloop transitions, 97 changer transitions 0/370 dead transitions. [2024-05-12 13:24:24,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 370 transitions, 5979 flow [2024-05-12 13:24:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:24:24,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 13:24:24,533 INFO L175 Difference]: Start difference. First operand has 220 places, 320 transitions, 4752 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:24:24,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 370 transitions, 5979 flow [2024-05-12 13:24:24,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 370 transitions, 5792 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:24,693 INFO L231 Difference]: Finished difference. Result has 224 places, 340 transitions, 5247 flow [2024-05-12 13:24:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4565, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5247, PETRI_PLACES=224, PETRI_TRANSITIONS=340} [2024-05-12 13:24:24,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2024-05-12 13:24:24,693 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 340 transitions, 5247 flow [2024-05-12 13:24:24,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:24,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:24,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:24,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:24:24,694 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:24,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1214196348, now seen corresponding path program 7 times [2024-05-12 13:24:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938097059] [2024-05-12 13:24:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:25,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:25,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938097059] [2024-05-12 13:24:25,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938097059] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:25,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:25,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591978510] [2024-05-12 13:24:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:25,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:25,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 340 transitions, 5247 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:25,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:25,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:25,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:26,060 INFO L124 PetriNetUnfolderBase]: 1448/2554 cut-off events. [2024-05-12 13:24:26,060 INFO L125 PetriNetUnfolderBase]: For 69229/69269 co-relation queries the response was YES. [2024-05-12 13:24:26,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17622 conditions, 2554 events. 1448/2554 cut-off events. For 69229/69269 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15014 event pairs, 182 based on Foata normal form. 29/2507 useless extension candidates. Maximal degree in co-relation 17517. Up to 1995 conditions per place. [2024-05-12 13:24:26,082 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 267 selfloop transitions, 96 changer transitions 0/389 dead transitions. [2024-05-12 13:24:26,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 389 transitions, 6285 flow [2024-05-12 13:24:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 13:24:26,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 13:24:26,083 INFO L175 Difference]: Start difference. First operand has 224 places, 340 transitions, 5247 flow. Second operand 9 states and 161 transitions. [2024-05-12 13:24:26,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 389 transitions, 6285 flow [2024-05-12 13:24:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 389 transitions, 6085 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:26,230 INFO L231 Difference]: Finished difference. Result has 230 places, 360 transitions, 5519 flow [2024-05-12 13:24:26,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5047, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5519, PETRI_PLACES=230, PETRI_TRANSITIONS=360} [2024-05-12 13:24:26,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-05-12 13:24:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 360 transitions, 5519 flow [2024-05-12 13:24:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:26,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:26,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:24:26,231 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:26,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1674387704, now seen corresponding path program 8 times [2024-05-12 13:24:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16603] [2024-05-12 13:24:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16603] [2024-05-12 13:24:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16603] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:27,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833123317] [2024-05-12 13:24:27,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:27,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:27,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 360 transitions, 5519 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:27,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:27,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:27,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:27,753 INFO L124 PetriNetUnfolderBase]: 1524/2683 cut-off events. [2024-05-12 13:24:27,753 INFO L125 PetriNetUnfolderBase]: For 75195/75235 co-relation queries the response was YES. [2024-05-12 13:24:27,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18963 conditions, 2683 events. 1524/2683 cut-off events. For 75195/75235 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15990 event pairs, 273 based on Foata normal form. 29/2635 useless extension candidates. Maximal degree in co-relation 18855. Up to 2153 conditions per place. [2024-05-12 13:24:27,776 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 298 selfloop transitions, 92 changer transitions 0/416 dead transitions. [2024-05-12 13:24:27,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 416 transitions, 6801 flow [2024-05-12 13:24:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:24:27,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 13:24:27,778 INFO L175 Difference]: Start difference. First operand has 230 places, 360 transitions, 5519 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:24:27,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 416 transitions, 6801 flow [2024-05-12 13:24:27,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 416 transitions, 6574 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:27,995 INFO L231 Difference]: Finished difference. Result has 235 places, 384 transitions, 5928 flow [2024-05-12 13:24:27,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5928, PETRI_PLACES=235, PETRI_TRANSITIONS=384} [2024-05-12 13:24:27,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-05-12 13:24:27,996 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 384 transitions, 5928 flow [2024-05-12 13:24:27,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:27,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:27,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:27,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:24:27,996 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:27,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1786168856, now seen corresponding path program 9 times [2024-05-12 13:24:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288696894] [2024-05-12 13:24:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288696894] [2024-05-12 13:24:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288696894] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:28,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:28,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:24:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282621923] [2024-05-12 13:24:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:28,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:24:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:24:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:24:28,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 13:24:28,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 384 transitions, 5928 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:28,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:28,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 13:24:28,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:29,580 INFO L124 PetriNetUnfolderBase]: 1550/2719 cut-off events. [2024-05-12 13:24:29,581 INFO L125 PetriNetUnfolderBase]: For 74177/74217 co-relation queries the response was YES. [2024-05-12 13:24:29,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19364 conditions, 2719 events. 1550/2719 cut-off events. For 74177/74217 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16233 event pairs, 294 based on Foata normal form. 29/2673 useless extension candidates. Maximal degree in co-relation 19254. Up to 2189 conditions per place. [2024-05-12 13:24:29,603 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 304 selfloop transitions, 98 changer transitions 0/428 dead transitions. [2024-05-12 13:24:29,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 428 transitions, 7113 flow [2024-05-12 13:24:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:24:29,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 13:24:29,604 INFO L175 Difference]: Start difference. First operand has 235 places, 384 transitions, 5928 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:24:29,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 428 transitions, 7113 flow [2024-05-12 13:24:29,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 428 transitions, 6972 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-05-12 13:24:29,813 INFO L231 Difference]: Finished difference. Result has 241 places, 396 transitions, 6288 flow [2024-05-12 13:24:29,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5787, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6288, PETRI_PLACES=241, PETRI_TRANSITIONS=396} [2024-05-12 13:24:29,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-05-12 13:24:29,814 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 396 transitions, 6288 flow [2024-05-12 13:24:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:29,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:29,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:29,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:24:29,815 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 370729205, now seen corresponding path program 1 times [2024-05-12 13:24:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129974179] [2024-05-12 13:24:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129974179] [2024-05-12 13:24:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129974179] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:30,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79031871] [2024-05-12 13:24:30,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:30,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:30,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:30,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 396 transitions, 6288 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:30,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:30,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:31,564 INFO L124 PetriNetUnfolderBase]: 1674/2880 cut-off events. [2024-05-12 13:24:31,565 INFO L125 PetriNetUnfolderBase]: For 75804/75804 co-relation queries the response was YES. [2024-05-12 13:24:31,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20330 conditions, 2880 events. 1674/2880 cut-off events. For 75804/75804 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17017 event pairs, 387 based on Foata normal form. 2/2821 useless extension candidates. Maximal degree in co-relation 20218. Up to 2578 conditions per place. [2024-05-12 13:24:31,589 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 407 selfloop transitions, 25 changer transitions 0/438 dead transitions. [2024-05-12 13:24:31,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 438 transitions, 7514 flow [2024-05-12 13:24:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:24:31,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-05-12 13:24:31,590 INFO L175 Difference]: Start difference. First operand has 241 places, 396 transitions, 6288 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:24:31,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 438 transitions, 7514 flow [2024-05-12 13:24:31,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 438 transitions, 7309 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:31,823 INFO L231 Difference]: Finished difference. Result has 245 places, 398 transitions, 6198 flow [2024-05-12 13:24:31,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6083, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6198, PETRI_PLACES=245, PETRI_TRANSITIONS=398} [2024-05-12 13:24:31,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-05-12 13:24:31,824 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 398 transitions, 6198 flow [2024-05-12 13:24:31,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:31,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:31,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:31,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:24:31,824 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:31,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1492296227, now seen corresponding path program 1 times [2024-05-12 13:24:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397053123] [2024-05-12 13:24:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397053123] [2024-05-12 13:24:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397053123] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:31,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:24:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758301749] [2024-05-12 13:24:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:31,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:24:31,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:24:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:24:31,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-05-12 13:24:31,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 398 transitions, 6198 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:31,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:31,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-05-12 13:24:31,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:32,211 INFO L124 PetriNetUnfolderBase]: 721/1528 cut-off events. [2024-05-12 13:24:32,211 INFO L125 PetriNetUnfolderBase]: For 49557/49694 co-relation queries the response was YES. [2024-05-12 13:24:32,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9814 conditions, 1528 events. 721/1528 cut-off events. For 49557/49694 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9976 event pairs, 144 based on Foata normal form. 135/1568 useless extension candidates. Maximal degree in co-relation 9701. Up to 512 conditions per place. [2024-05-12 13:24:32,223 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 107 selfloop transitions, 44 changer transitions 0/255 dead transitions. [2024-05-12 13:24:32,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 255 transitions, 4067 flow [2024-05-12 13:24:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:24:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:24:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-05-12 13:24:32,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2024-05-12 13:24:32,223 INFO L175 Difference]: Start difference. First operand has 245 places, 398 transitions, 6198 flow. Second operand 4 states and 99 transitions. [2024-05-12 13:24:32,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 255 transitions, 4067 flow [2024-05-12 13:24:32,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 255 transitions, 3123 flow, removed 36 selfloop flow, removed 53 redundant places. [2024-05-12 13:24:32,321 INFO L231 Difference]: Finished difference. Result has 197 places, 234 transitions, 2795 flow [2024-05-12 13:24:32,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2795, PETRI_PLACES=197, PETRI_TRANSITIONS=234} [2024-05-12 13:24:32,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-05-12 13:24:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 234 transitions, 2795 flow [2024-05-12 13:24:32,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:32,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:32,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:32,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:24:32,322 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1897807215, now seen corresponding path program 1 times [2024-05-12 13:24:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:32,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457031792] [2024-05-12 13:24:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:32,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:33,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457031792] [2024-05-12 13:24:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457031792] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:33,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:33,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927533779] [2024-05-12 13:24:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:33,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:33,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 234 transitions, 2795 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:33,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:33,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:33,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:33,744 INFO L124 PetriNetUnfolderBase]: 1055/1908 cut-off events. [2024-05-12 13:24:33,744 INFO L125 PetriNetUnfolderBase]: For 49588/49588 co-relation queries the response was YES. [2024-05-12 13:24:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11591 conditions, 1908 events. 1055/1908 cut-off events. For 49588/49588 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10565 event pairs, 123 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 11494. Up to 1338 conditions per place. [2024-05-12 13:24:33,758 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 182 selfloop transitions, 73 changer transitions 0/262 dead transitions. [2024-05-12 13:24:33,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 262 transitions, 3483 flow [2024-05-12 13:24:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 13:24:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-05-12 13:24:33,759 INFO L175 Difference]: Start difference. First operand has 197 places, 234 transitions, 2795 flow. Second operand 9 states and 141 transitions. [2024-05-12 13:24:33,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 262 transitions, 3483 flow [2024-05-12 13:24:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 262 transitions, 3481 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:24:33,880 INFO L231 Difference]: Finished difference. Result has 205 places, 236 transitions, 3009 flow [2024-05-12 13:24:33,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3009, PETRI_PLACES=205, PETRI_TRANSITIONS=236} [2024-05-12 13:24:33,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-05-12 13:24:33,881 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 236 transitions, 3009 flow [2024-05-12 13:24:33,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:33,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:33,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:24:33,881 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:33,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -574976249, now seen corresponding path program 1 times [2024-05-12 13:24:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278220147] [2024-05-12 13:24:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278220147] [2024-05-12 13:24:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278220147] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:34,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82899042] [2024-05-12 13:24:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:34,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:34,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 236 transitions, 3009 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:34,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:34,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:34,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:35,287 INFO L124 PetriNetUnfolderBase]: 1053/1908 cut-off events. [2024-05-12 13:24:35,287 INFO L125 PetriNetUnfolderBase]: For 50326/50326 co-relation queries the response was YES. [2024-05-12 13:24:35,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11857 conditions, 1908 events. 1053/1908 cut-off events. For 50326/50326 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10569 event pairs, 265 based on Foata normal form. 1/1828 useless extension candidates. Maximal degree in co-relation 11757. Up to 1599 conditions per place. [2024-05-12 13:24:35,301 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 187 selfloop transitions, 63 changer transitions 0/257 dead transitions. [2024-05-12 13:24:35,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 257 transitions, 3599 flow [2024-05-12 13:24:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-05-12 13:24:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2024-05-12 13:24:35,302 INFO L175 Difference]: Start difference. First operand has 205 places, 236 transitions, 3009 flow. Second operand 9 states and 136 transitions. [2024-05-12 13:24:35,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 257 transitions, 3599 flow [2024-05-12 13:24:35,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 257 transitions, 3409 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:35,435 INFO L231 Difference]: Finished difference. Result has 207 places, 236 transitions, 2953 flow [2024-05-12 13:24:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2953, PETRI_PLACES=207, PETRI_TRANSITIONS=236} [2024-05-12 13:24:35,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-05-12 13:24:35,436 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 236 transitions, 2953 flow [2024-05-12 13:24:35,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:35,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:35,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:35,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:24:35,437 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:35,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1098854399, now seen corresponding path program 2 times [2024-05-12 13:24:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979220440] [2024-05-12 13:24:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:36,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979220440] [2024-05-12 13:24:36,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979220440] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:36,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:36,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012372795] [2024-05-12 13:24:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:36,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:36,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 236 transitions, 2953 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:36,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:36,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:36,851 INFO L124 PetriNetUnfolderBase]: 1069/1936 cut-off events. [2024-05-12 13:24:36,851 INFO L125 PetriNetUnfolderBase]: For 52724/52724 co-relation queries the response was YES. [2024-05-12 13:24:36,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11956 conditions, 1936 events. 1069/1936 cut-off events. For 52724/52724 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10777 event pairs, 273 based on Foata normal form. 2/1858 useless extension candidates. Maximal degree in co-relation 11855. Up to 1623 conditions per place. [2024-05-12 13:24:36,870 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 193 selfloop transitions, 61 changer transitions 0/261 dead transitions. [2024-05-12 13:24:36,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 261 transitions, 3623 flow [2024-05-12 13:24:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 13:24:36,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-05-12 13:24:36,871 INFO L175 Difference]: Start difference. First operand has 207 places, 236 transitions, 2953 flow. Second operand 9 states and 138 transitions. [2024-05-12 13:24:36,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 261 transitions, 3623 flow [2024-05-12 13:24:37,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 261 transitions, 3421 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 13:24:37,012 INFO L231 Difference]: Finished difference. Result has 206 places, 238 transitions, 2939 flow [2024-05-12 13:24:37,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2939, PETRI_PLACES=206, PETRI_TRANSITIONS=238} [2024-05-12 13:24:37,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-05-12 13:24:37,013 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 238 transitions, 2939 flow [2024-05-12 13:24:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:37,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:37,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:37,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:24:37,013 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:37,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1492758185, now seen corresponding path program 3 times [2024-05-12 13:24:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088726759] [2024-05-12 13:24:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:37,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:37,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088726759] [2024-05-12 13:24:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088726759] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556317375] [2024-05-12 13:24:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:37,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:37,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:37,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 238 transitions, 2939 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:37,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:37,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:37,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:38,426 INFO L124 PetriNetUnfolderBase]: 1085/1964 cut-off events. [2024-05-12 13:24:38,426 INFO L125 PetriNetUnfolderBase]: For 55269/55269 co-relation queries the response was YES. [2024-05-12 13:24:38,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12134 conditions, 1964 events. 1085/1964 cut-off events. For 55269/55269 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10988 event pairs, 268 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 12032. Up to 1475 conditions per place. [2024-05-12 13:24:38,441 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 195 selfloop transitions, 63 changer transitions 0/265 dead transitions. [2024-05-12 13:24:38,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 265 transitions, 3637 flow [2024-05-12 13:24:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 13:24:38,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-05-12 13:24:38,442 INFO L175 Difference]: Start difference. First operand has 206 places, 238 transitions, 2939 flow. Second operand 9 states and 142 transitions. [2024-05-12 13:24:38,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 265 transitions, 3637 flow [2024-05-12 13:24:38,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 265 transitions, 3467 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:38,580 INFO L231 Difference]: Finished difference. Result has 208 places, 240 transitions, 2969 flow [2024-05-12 13:24:38,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2969, PETRI_PLACES=208, PETRI_TRANSITIONS=240} [2024-05-12 13:24:38,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-05-12 13:24:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 240 transitions, 2969 flow [2024-05-12 13:24:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:38,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:24:38,583 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:38,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -487210971, now seen corresponding path program 1 times [2024-05-12 13:24:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774362505] [2024-05-12 13:24:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774362505] [2024-05-12 13:24:39,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774362505] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:39,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:39,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830029458] [2024-05-12 13:24:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:39,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:39,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:39,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 240 transitions, 2969 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:39,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:39,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:39,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:39,824 INFO L124 PetriNetUnfolderBase]: 1096/1977 cut-off events. [2024-05-12 13:24:39,824 INFO L125 PetriNetUnfolderBase]: For 57378/57380 co-relation queries the response was YES. [2024-05-12 13:24:39,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12249 conditions, 1977 events. 1096/1977 cut-off events. For 57378/57380 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11030 event pairs, 269 based on Foata normal form. 4/1897 useless extension candidates. Maximal degree in co-relation 12146. Up to 1696 conditions per place. [2024-05-12 13:24:39,839 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 50 changer transitions 0/269 dead transitions. [2024-05-12 13:24:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 269 transitions, 3657 flow [2024-05-12 13:24:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 13:24:39,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39210526315789473 [2024-05-12 13:24:39,840 INFO L175 Difference]: Start difference. First operand has 208 places, 240 transitions, 2969 flow. Second operand 10 states and 149 transitions. [2024-05-12 13:24:39,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 269 transitions, 3657 flow [2024-05-12 13:24:40,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 269 transitions, 3483 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:40,011 INFO L231 Difference]: Finished difference. Result has 211 places, 242 transitions, 2934 flow [2024-05-12 13:24:40,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2934, PETRI_PLACES=211, PETRI_TRANSITIONS=242} [2024-05-12 13:24:40,012 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-05-12 13:24:40,012 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 242 transitions, 2934 flow [2024-05-12 13:24:40,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:40,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:40,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:40,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:24:40,013 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:40,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1663465265, now seen corresponding path program 4 times [2024-05-12 13:24:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94073578] [2024-05-12 13:24:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:40,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:40,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94073578] [2024-05-12 13:24:40,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94073578] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:40,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:40,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601170467] [2024-05-12 13:24:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:40,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:40,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:40,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 242 transitions, 2934 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:40,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:40,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:40,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:41,413 INFO L124 PetriNetUnfolderBase]: 1112/2007 cut-off events. [2024-05-12 13:24:41,413 INFO L125 PetriNetUnfolderBase]: For 58559/58559 co-relation queries the response was YES. [2024-05-12 13:24:41,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12409 conditions, 2007 events. 1112/2007 cut-off events. For 58559/58559 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11244 event pairs, 279 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 12305. Up to 1653 conditions per place. [2024-05-12 13:24:41,428 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 205 selfloop transitions, 54 changer transitions 0/266 dead transitions. [2024-05-12 13:24:41,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 266 transitions, 3620 flow [2024-05-12 13:24:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-05-12 13:24:41,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-05-12 13:24:41,430 INFO L175 Difference]: Start difference. First operand has 211 places, 242 transitions, 2934 flow. Second operand 9 states and 140 transitions. [2024-05-12 13:24:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 266 transitions, 3620 flow [2024-05-12 13:24:41,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 266 transitions, 3501 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:41,574 INFO L231 Difference]: Finished difference. Result has 212 places, 244 transitions, 2996 flow [2024-05-12 13:24:41,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2996, PETRI_PLACES=212, PETRI_TRANSITIONS=244} [2024-05-12 13:24:41,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-05-12 13:24:41,574 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 244 transitions, 2996 flow [2024-05-12 13:24:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:41,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:41,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:41,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:24:41,575 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:41,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:41,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1180630941, now seen corresponding path program 5 times [2024-05-12 13:24:41,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:41,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812951141] [2024-05-12 13:24:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812951141] [2024-05-12 13:24:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812951141] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:42,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:42,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046269258] [2024-05-12 13:24:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:42,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:42,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:42,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 244 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:42,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:42,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:42,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:43,112 INFO L124 PetriNetUnfolderBase]: 1147/2070 cut-off events. [2024-05-12 13:24:43,112 INFO L125 PetriNetUnfolderBase]: For 66412/66412 co-relation queries the response was YES. [2024-05-12 13:24:43,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13057 conditions, 2070 events. 1147/2070 cut-off events. For 66412/66412 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11680 event pairs, 279 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 12952. Up to 1649 conditions per place. [2024-05-12 13:24:43,130 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 207 selfloop transitions, 59 changer transitions 0/273 dead transitions. [2024-05-12 13:24:43,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 273 transitions, 3904 flow [2024-05-12 13:24:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 13:24:43,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:24:43,131 INFO L175 Difference]: Start difference. First operand has 212 places, 244 transitions, 2996 flow. Second operand 9 states and 144 transitions. [2024-05-12 13:24:43,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 273 transitions, 3904 flow [2024-05-12 13:24:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 273 transitions, 3739 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:43,285 INFO L231 Difference]: Finished difference. Result has 214 places, 248 transitions, 3094 flow [2024-05-12 13:24:43,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3094, PETRI_PLACES=214, PETRI_TRANSITIONS=248} [2024-05-12 13:24:43,286 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-05-12 13:24:43,286 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 248 transitions, 3094 flow [2024-05-12 13:24:43,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:43,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:43,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:24:43,286 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:43,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1180446367, now seen corresponding path program 2 times [2024-05-12 13:24:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873937449] [2024-05-12 13:24:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873937449] [2024-05-12 13:24:43,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873937449] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:43,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:43,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690366817] [2024-05-12 13:24:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:43,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:44,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:44,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 248 transitions, 3094 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:44,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:44,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:44,544 INFO L124 PetriNetUnfolderBase]: 1223/2184 cut-off events. [2024-05-12 13:24:44,545 INFO L125 PetriNetUnfolderBase]: For 83290/83290 co-relation queries the response was YES. [2024-05-12 13:24:44,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14245 conditions, 2184 events. 1223/2184 cut-off events. For 83290/83290 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12342 event pairs, 304 based on Foata normal form. 2/2090 useless extension candidates. Maximal degree in co-relation 14139. Up to 1671 conditions per place. [2024-05-12 13:24:44,561 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 210 selfloop transitions, 65 changer transitions 0/282 dead transitions. [2024-05-12 13:24:44,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 282 transitions, 4132 flow [2024-05-12 13:24:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:24:44,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-05-12 13:24:44,562 INFO L175 Difference]: Start difference. First operand has 214 places, 248 transitions, 3094 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:24:44,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 282 transitions, 4132 flow [2024-05-12 13:24:44,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 282 transitions, 3985 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:44,764 INFO L231 Difference]: Finished difference. Result has 221 places, 256 transitions, 3278 flow [2024-05-12 13:24:44,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3278, PETRI_PLACES=221, PETRI_TRANSITIONS=256} [2024-05-12 13:24:44,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-05-12 13:24:44,767 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 256 transitions, 3278 flow [2024-05-12 13:24:44,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:44,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:44,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:24:44,767 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:44,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1669894355, now seen corresponding path program 6 times [2024-05-12 13:24:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:44,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180169428] [2024-05-12 13:24:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:45,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180169428] [2024-05-12 13:24:45,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180169428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:45,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:45,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:45,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702771516] [2024-05-12 13:24:45,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:45,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:45,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:45,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:45,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 256 transitions, 3278 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:45,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:45,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:46,238 INFO L124 PetriNetUnfolderBase]: 1220/2179 cut-off events. [2024-05-12 13:24:46,239 INFO L125 PetriNetUnfolderBase]: For 81305/81305 co-relation queries the response was YES. [2024-05-12 13:24:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14405 conditions, 2179 events. 1220/2179 cut-off events. For 81305/81305 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12336 event pairs, 298 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 14295. Up to 1823 conditions per place. [2024-05-12 13:24:46,257 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 205 selfloop transitions, 66 changer transitions 0/278 dead transitions. [2024-05-12 13:24:46,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 278 transitions, 3924 flow [2024-05-12 13:24:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 13:24:46,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064327485380117 [2024-05-12 13:24:46,258 INFO L175 Difference]: Start difference. First operand has 221 places, 256 transitions, 3278 flow. Second operand 9 states and 139 transitions. [2024-05-12 13:24:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 278 transitions, 3924 flow [2024-05-12 13:24:46,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 278 transitions, 3812 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 13:24:46,464 INFO L231 Difference]: Finished difference. Result has 225 places, 256 transitions, 3303 flow [2024-05-12 13:24:46,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3303, PETRI_PLACES=225, PETRI_TRANSITIONS=256} [2024-05-12 13:24:46,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-05-12 13:24:46,465 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 256 transitions, 3303 flow [2024-05-12 13:24:46,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:46,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:46,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:46,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:24:46,465 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:46,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash 499640577, now seen corresponding path program 3 times [2024-05-12 13:24:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591562071] [2024-05-12 13:24:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:47,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:47,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591562071] [2024-05-12 13:24:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591562071] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108077057] [2024-05-12 13:24:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:47,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:47,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 256 transitions, 3303 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:47,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:47,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:47,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:47,660 INFO L124 PetriNetUnfolderBase]: 1231/2196 cut-off events. [2024-05-12 13:24:47,660 INFO L125 PetriNetUnfolderBase]: For 82915/82915 co-relation queries the response was YES. [2024-05-12 13:24:47,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 2196 events. 1231/2196 cut-off events. For 82915/82915 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12436 event pairs, 287 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 14456. Up to 1670 conditions per place. [2024-05-12 13:24:47,680 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 199 selfloop transitions, 78 changer transitions 0/284 dead transitions. [2024-05-12 13:24:47,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 284 transitions, 4264 flow [2024-05-12 13:24:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 13:24:47,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-05-12 13:24:47,681 INFO L175 Difference]: Start difference. First operand has 225 places, 256 transitions, 3303 flow. Second operand 10 states and 158 transitions. [2024-05-12 13:24:47,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 284 transitions, 4264 flow [2024-05-12 13:24:47,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 284 transitions, 4120 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:47,892 INFO L231 Difference]: Finished difference. Result has 227 places, 258 transitions, 3359 flow [2024-05-12 13:24:47,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=227, PETRI_TRANSITIONS=258} [2024-05-12 13:24:47,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-05-12 13:24:47,893 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 258 transitions, 3359 flow [2024-05-12 13:24:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:47,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:47,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:47,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:24:47,893 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:47,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 499879897, now seen corresponding path program 1 times [2024-05-12 13:24:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633546154] [2024-05-12 13:24:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:48,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:48,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633546154] [2024-05-12 13:24:48,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633546154] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:48,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:48,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:48,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493258862] [2024-05-12 13:24:48,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:48,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:48,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:48,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:48,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 258 transitions, 3359 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:48,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:48,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:48,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:49,326 INFO L124 PetriNetUnfolderBase]: 1227/2191 cut-off events. [2024-05-12 13:24:49,326 INFO L125 PetriNetUnfolderBase]: For 81156/81156 co-relation queries the response was YES. [2024-05-12 13:24:49,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14442 conditions, 2191 events. 1227/2191 cut-off events. For 81156/81156 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12409 event pairs, 289 based on Foata normal form. 3/2097 useless extension candidates. Maximal degree in co-relation 14329. Up to 1682 conditions per place. [2024-05-12 13:24:49,345 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 190 selfloop transitions, 88 changer transitions 0/285 dead transitions. [2024-05-12 13:24:49,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 285 transitions, 4217 flow [2024-05-12 13:24:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 13:24:49,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-05-12 13:24:49,346 INFO L175 Difference]: Start difference. First operand has 227 places, 258 transitions, 3359 flow. Second operand 10 states and 154 transitions. [2024-05-12 13:24:49,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 285 transitions, 4217 flow [2024-05-12 13:24:49,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 285 transitions, 4054 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:49,553 INFO L231 Difference]: Finished difference. Result has 231 places, 261 transitions, 3476 flow [2024-05-12 13:24:49,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3476, PETRI_PLACES=231, PETRI_TRANSITIONS=261} [2024-05-12 13:24:49,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-05-12 13:24:49,553 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 261 transitions, 3476 flow [2024-05-12 13:24:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:49,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:24:49,554 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 499879587, now seen corresponding path program 4 times [2024-05-12 13:24:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224613763] [2024-05-12 13:24:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224613763] [2024-05-12 13:24:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224613763] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:50,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799493942] [2024-05-12 13:24:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:50,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:50,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 261 transitions, 3476 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:50,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:50,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:50,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:50,804 INFO L124 PetriNetUnfolderBase]: 1234/2202 cut-off events. [2024-05-12 13:24:50,804 INFO L125 PetriNetUnfolderBase]: For 81013/81013 co-relation queries the response was YES. [2024-05-12 13:24:50,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 2202 events. 1234/2202 cut-off events. For 81013/81013 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12473 event pairs, 287 based on Foata normal form. 4/2108 useless extension candidates. Maximal degree in co-relation 14473. Up to 1670 conditions per place. [2024-05-12 13:24:50,825 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 193 selfloop transitions, 87 changer transitions 0/287 dead transitions. [2024-05-12 13:24:50,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 287 transitions, 4313 flow [2024-05-12 13:24:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:24:50,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-05-12 13:24:50,826 INFO L175 Difference]: Start difference. First operand has 231 places, 261 transitions, 3476 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:24:50,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 287 transitions, 4313 flow [2024-05-12 13:24:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 287 transitions, 4073 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:51,051 INFO L231 Difference]: Finished difference. Result has 233 places, 263 transitions, 3465 flow [2024-05-12 13:24:51,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3465, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2024-05-12 13:24:51,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-05-12 13:24:51,052 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 3465 flow [2024-05-12 13:24:51,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:51,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:51,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:24:51,052 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:51,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1670131939, now seen corresponding path program 5 times [2024-05-12 13:24:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197710580] [2024-05-12 13:24:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:51,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197710580] [2024-05-12 13:24:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197710580] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548768580] [2024-05-12 13:24:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:51,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:51,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 3465 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:51,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:51,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:51,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:52,323 INFO L124 PetriNetUnfolderBase]: 1229/2194 cut-off events. [2024-05-12 13:24:52,323 INFO L125 PetriNetUnfolderBase]: For 74138/74138 co-relation queries the response was YES. [2024-05-12 13:24:52,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14323 conditions, 2194 events. 1229/2194 cut-off events. For 74138/74138 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12424 event pairs, 288 based on Foata normal form. 2/2098 useless extension candidates. Maximal degree in co-relation 14208. Up to 1668 conditions per place. [2024-05-12 13:24:52,344 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 196 selfloop transitions, 84 changer transitions 0/287 dead transitions. [2024-05-12 13:24:52,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 287 transitions, 4259 flow [2024-05-12 13:24:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 13:24:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-05-12 13:24:52,345 INFO L175 Difference]: Start difference. First operand has 233 places, 263 transitions, 3465 flow. Second operand 10 states and 156 transitions. [2024-05-12 13:24:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 287 transitions, 4259 flow [2024-05-12 13:24:52,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 287 transitions, 4053 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:52,554 INFO L231 Difference]: Finished difference. Result has 236 places, 263 transitions, 3432 flow [2024-05-12 13:24:52,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3432, PETRI_PLACES=236, PETRI_TRANSITIONS=263} [2024-05-12 13:24:52,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-05-12 13:24:52,555 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 263 transitions, 3432 flow [2024-05-12 13:24:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:52,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:52,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:24:52,556 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1874968235, now seen corresponding path program 7 times [2024-05-12 13:24:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789027015] [2024-05-12 13:24:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:52,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:53,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789027015] [2024-05-12 13:24:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789027015] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076221620] [2024-05-12 13:24:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:53,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:53,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 263 transitions, 3432 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:53,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:53,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:53,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:54,062 INFO L124 PetriNetUnfolderBase]: 1245/2224 cut-off events. [2024-05-12 13:24:54,062 INFO L125 PetriNetUnfolderBase]: For 76704/76704 co-relation queries the response was YES. [2024-05-12 13:24:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14508 conditions, 2224 events. 1245/2224 cut-off events. For 76704/76704 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12674 event pairs, 283 based on Foata normal form. 2/2124 useless extension candidates. Maximal degree in co-relation 14392. Up to 1798 conditions per place. [2024-05-12 13:24:54,076 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 200 selfloop transitions, 78 changer transitions 0/285 dead transitions. [2024-05-12 13:24:54,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 285 transitions, 4158 flow [2024-05-12 13:24:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 13:24:54,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064327485380117 [2024-05-12 13:24:54,084 INFO L175 Difference]: Start difference. First operand has 236 places, 263 transitions, 3432 flow. Second operand 9 states and 139 transitions. [2024-05-12 13:24:54,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 285 transitions, 4158 flow [2024-05-12 13:24:54,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 285 transitions, 3998 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:24:54,271 INFO L231 Difference]: Finished difference. Result has 237 places, 265 transitions, 3509 flow [2024-05-12 13:24:54,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3509, PETRI_PLACES=237, PETRI_TRANSITIONS=265} [2024-05-12 13:24:54,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-05-12 13:24:54,272 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 265 transitions, 3509 flow [2024-05-12 13:24:54,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:54,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:54,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:54,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:24:54,272 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:54,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1874961291, now seen corresponding path program 6 times [2024-05-12 13:24:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938515238] [2024-05-12 13:24:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938515238] [2024-05-12 13:24:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938515238] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:54,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:54,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:54,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125664987] [2024-05-12 13:24:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:54,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:55,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:55,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 265 transitions, 3509 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:55,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:55,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:55,595 INFO L124 PetriNetUnfolderBase]: 1313/2325 cut-off events. [2024-05-12 13:24:55,595 INFO L125 PetriNetUnfolderBase]: For 95656/95656 co-relation queries the response was YES. [2024-05-12 13:24:55,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15760 conditions, 2325 events. 1313/2325 cut-off events. For 95656/95656 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13263 event pairs, 292 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 15643. Up to 1455 conditions per place. [2024-05-12 13:24:55,611 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 186 selfloop transitions, 107 changer transitions 0/300 dead transitions. [2024-05-12 13:24:55,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 300 transitions, 4797 flow [2024-05-12 13:24:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:24:55,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-05-12 13:24:55,612 INFO L175 Difference]: Start difference. First operand has 237 places, 265 transitions, 3509 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:24:55,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 300 transitions, 4797 flow [2024-05-12 13:24:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 300 transitions, 4576 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:55,856 INFO L231 Difference]: Finished difference. Result has 242 places, 273 transitions, 3696 flow [2024-05-12 13:24:55,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3696, PETRI_PLACES=242, PETRI_TRANSITIONS=273} [2024-05-12 13:24:55,857 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 200 predicate places. [2024-05-12 13:24:55,857 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 273 transitions, 3696 flow [2024-05-12 13:24:55,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:55,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:55,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:24:55,858 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:55,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1056139571, now seen corresponding path program 8 times [2024-05-12 13:24:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390255720] [2024-05-12 13:24:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:56,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390255720] [2024-05-12 13:24:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390255720] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33195429] [2024-05-12 13:24:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:56,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:56,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 273 transitions, 3696 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:56,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:56,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:56,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:57,423 INFO L124 PetriNetUnfolderBase]: 1329/2354 cut-off events. [2024-05-12 13:24:57,423 INFO L125 PetriNetUnfolderBase]: For 99208/99208 co-relation queries the response was YES. [2024-05-12 13:24:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16223 conditions, 2354 events. 1329/2354 cut-off events. For 99208/99208 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13448 event pairs, 299 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 16103. Up to 1928 conditions per place. [2024-05-12 13:24:57,443 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 223 selfloop transitions, 65 changer transitions 0/295 dead transitions. [2024-05-12 13:24:57,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 295 transitions, 4446 flow [2024-05-12 13:24:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:24:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:24:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-05-12 13:24:57,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-05-12 13:24:57,445 INFO L175 Difference]: Start difference. First operand has 242 places, 273 transitions, 3696 flow. Second operand 9 states and 140 transitions. [2024-05-12 13:24:57,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 295 transitions, 4446 flow [2024-05-12 13:24:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 295 transitions, 4196 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:24:57,774 INFO L231 Difference]: Finished difference. Result has 245 places, 275 transitions, 3661 flow [2024-05-12 13:24:57,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3661, PETRI_PLACES=245, PETRI_TRANSITIONS=275} [2024-05-12 13:24:57,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-05-12 13:24:57,775 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 275 transitions, 3661 flow [2024-05-12 13:24:57,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:57,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:57,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:57,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:24:57,775 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:57,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1049464527, now seen corresponding path program 7 times [2024-05-12 13:24:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191473382] [2024-05-12 13:24:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:24:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:24:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:24:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191473382] [2024-05-12 13:24:58,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191473382] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:24:58,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:24:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:24:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130440480] [2024-05-12 13:24:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:24:58,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:24:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:24:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:24:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:24:58,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:24:58,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 275 transitions, 3661 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:58,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:24:58,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:24:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:24:59,084 INFO L124 PetriNetUnfolderBase]: 1355/2393 cut-off events. [2024-05-12 13:24:59,084 INFO L125 PetriNetUnfolderBase]: For 105061/105061 co-relation queries the response was YES. [2024-05-12 13:24:59,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16325 conditions, 2393 events. 1355/2393 cut-off events. For 105061/105061 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13725 event pairs, 329 based on Foata normal form. 4/2282 useless extension candidates. Maximal degree in co-relation 16205. Up to 1502 conditions per place. [2024-05-12 13:24:59,104 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 204 selfloop transitions, 94 changer transitions 0/305 dead transitions. [2024-05-12 13:24:59,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 305 transitions, 4877 flow [2024-05-12 13:24:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:24:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:24:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-05-12 13:24:59,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-05-12 13:24:59,105 INFO L175 Difference]: Start difference. First operand has 245 places, 275 transitions, 3661 flow. Second operand 10 states and 166 transitions. [2024-05-12 13:24:59,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 305 transitions, 4877 flow [2024-05-12 13:24:59,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 305 transitions, 4678 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-05-12 13:24:59,373 INFO L231 Difference]: Finished difference. Result has 249 places, 279 transitions, 3750 flow [2024-05-12 13:24:59,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3462, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3750, PETRI_PLACES=249, PETRI_TRANSITIONS=279} [2024-05-12 13:24:59,374 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-05-12 13:24:59,374 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 279 transitions, 3750 flow [2024-05-12 13:24:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:24:59,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:24:59,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:24:59,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:24:59,374 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:24:59,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:24:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1687883309, now seen corresponding path program 8 times [2024-05-12 13:24:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:24:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176726543] [2024-05-12 13:24:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:24:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:24:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:00,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:00,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176726543] [2024-05-12 13:25:00,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176726543] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:00,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:00,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:00,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377489254] [2024-05-12 13:25:00,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:00,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:00,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:00,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:00,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:00,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:00,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 279 transitions, 3750 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:00,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:00,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:00,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:00,645 INFO L124 PetriNetUnfolderBase]: 1421/2493 cut-off events. [2024-05-12 13:25:00,645 INFO L125 PetriNetUnfolderBase]: For 120030/120030 co-relation queries the response was YES. [2024-05-12 13:25:00,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17532 conditions, 2493 events. 1421/2493 cut-off events. For 120030/120030 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14326 event pairs, 308 based on Foata normal form. 4/2373 useless extension candidates. Maximal degree in co-relation 17410. Up to 1546 conditions per place. [2024-05-12 13:25:00,666 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 195 selfloop transitions, 111 changer transitions 0/313 dead transitions. [2024-05-12 13:25:00,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 313 transitions, 5059 flow [2024-05-12 13:25:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:25:00,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 13:25:00,667 INFO L175 Difference]: Start difference. First operand has 249 places, 279 transitions, 3750 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:25:00,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 313 transitions, 5059 flow [2024-05-12 13:25:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 313 transitions, 4726 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-05-12 13:25:01,025 INFO L231 Difference]: Finished difference. Result has 251 places, 286 transitions, 3795 flow [2024-05-12 13:25:01,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3427, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3795, PETRI_PLACES=251, PETRI_TRANSITIONS=286} [2024-05-12 13:25:01,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2024-05-12 13:25:01,026 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 286 transitions, 3795 flow [2024-05-12 13:25:01,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:01,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:01,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:01,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:25:01,027 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:01,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1687882999, now seen corresponding path program 2 times [2024-05-12 13:25:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466990050] [2024-05-12 13:25:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:02,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466990050] [2024-05-12 13:25:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466990050] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:02,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:02,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191339946] [2024-05-12 13:25:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:02,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:02,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 286 transitions, 3795 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:02,817 INFO L124 PetriNetUnfolderBase]: 1417/2490 cut-off events. [2024-05-12 13:25:02,817 INFO L125 PetriNetUnfolderBase]: For 111958/111958 co-relation queries the response was YES. [2024-05-12 13:25:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 2490 events. 1417/2490 cut-off events. For 111958/111958 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14346 event pairs, 363 based on Foata normal form. 1/2370 useless extension candidates. Maximal degree in co-relation 17038. Up to 2244 conditions per place. [2024-05-12 13:25:02,884 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 256 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-05-12 13:25:02,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 303 transitions, 4475 flow [2024-05-12 13:25:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-05-12 13:25:02,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-05-12 13:25:02,885 INFO L175 Difference]: Start difference. First operand has 251 places, 286 transitions, 3795 flow. Second operand 10 states and 145 transitions. [2024-05-12 13:25:02,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 303 transitions, 4475 flow [2024-05-12 13:25:03,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 303 transitions, 4241 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-05-12 13:25:03,172 INFO L231 Difference]: Finished difference. Result has 255 places, 287 transitions, 3660 flow [2024-05-12 13:25:03,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3660, PETRI_PLACES=255, PETRI_TRANSITIONS=287} [2024-05-12 13:25:03,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-05-12 13:25:03,173 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 287 transitions, 3660 flow [2024-05-12 13:25:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:03,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:03,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:03,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:25:03,173 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:03,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1392663799, now seen corresponding path program 3 times [2024-05-12 13:25:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349315466] [2024-05-12 13:25:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349315466] [2024-05-12 13:25:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349315466] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:04,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185610236] [2024-05-12 13:25:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:04,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:04,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 287 transitions, 3660 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:04,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:04,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:04,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:04,952 INFO L124 PetriNetUnfolderBase]: 1423/2503 cut-off events. [2024-05-12 13:25:04,953 INFO L125 PetriNetUnfolderBase]: For 113197/113197 co-relation queries the response was YES. [2024-05-12 13:25:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16859 conditions, 2503 events. 1423/2503 cut-off events. For 113197/113197 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14416 event pairs, 381 based on Foata normal form. 1/2384 useless extension candidates. Maximal degree in co-relation 16735. Up to 2336 conditions per place. [2024-05-12 13:25:04,975 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 281 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2024-05-12 13:25:04,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 305 transitions, 4368 flow [2024-05-12 13:25:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-05-12 13:25:04,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631578947368421 [2024-05-12 13:25:04,976 INFO L175 Difference]: Start difference. First operand has 255 places, 287 transitions, 3660 flow. Second operand 10 states and 138 transitions. [2024-05-12 13:25:04,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 305 transitions, 4368 flow [2024-05-12 13:25:05,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 305 transitions, 4275 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:05,369 INFO L231 Difference]: Finished difference. Result has 257 places, 289 transitions, 3646 flow [2024-05-12 13:25:05,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3567, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3646, PETRI_PLACES=257, PETRI_TRANSITIONS=289} [2024-05-12 13:25:05,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-05-12 13:25:05,369 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 289 transitions, 3646 flow [2024-05-12 13:25:05,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:05,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:05,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:05,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:25:05,370 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:05,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1056144221, now seen corresponding path program 9 times [2024-05-12 13:25:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912904755] [2024-05-12 13:25:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:06,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912904755] [2024-05-12 13:25:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912904755] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:06,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:06,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771496654] [2024-05-12 13:25:06,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:06,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:06,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:06,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 289 transitions, 3646 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:06,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:06,958 INFO L124 PetriNetUnfolderBase]: 1442/2530 cut-off events. [2024-05-12 13:25:06,959 INFO L125 PetriNetUnfolderBase]: For 120314/120314 co-relation queries the response was YES. [2024-05-12 13:25:06,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17178 conditions, 2530 events. 1442/2530 cut-off events. For 120314/120314 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14566 event pairs, 307 based on Foata normal form. 2/2409 useless extension candidates. Maximal degree in co-relation 17053. Up to 2020 conditions per place. [2024-05-12 13:25:06,980 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 237 selfloop transitions, 72 changer transitions 0/316 dead transitions. [2024-05-12 13:25:06,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 316 transitions, 4686 flow [2024-05-12 13:25:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:25:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:25:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 13:25:06,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:25:06,981 INFO L175 Difference]: Start difference. First operand has 257 places, 289 transitions, 3646 flow. Second operand 9 states and 144 transitions. [2024-05-12 13:25:06,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 316 transitions, 4686 flow [2024-05-12 13:25:07,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 316 transitions, 4633 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:07,325 INFO L231 Difference]: Finished difference. Result has 258 places, 293 transitions, 3906 flow [2024-05-12 13:25:07,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3906, PETRI_PLACES=258, PETRI_TRANSITIONS=293} [2024-05-12 13:25:07,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-05-12 13:25:07,325 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 293 transitions, 3906 flow [2024-05-12 13:25:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:07,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:07,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:07,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:25:07,326 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:07,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1055959647, now seen corresponding path program 9 times [2024-05-12 13:25:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276880527] [2024-05-12 13:25:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276880527] [2024-05-12 13:25:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276880527] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:08,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:08,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:08,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164474762] [2024-05-12 13:25:08,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:08,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:08,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:08,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:08,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:08,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 293 transitions, 3906 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:08,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:08,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:08,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:08,599 INFO L124 PetriNetUnfolderBase]: 1453/2546 cut-off events. [2024-05-12 13:25:08,599 INFO L125 PetriNetUnfolderBase]: For 124765/124765 co-relation queries the response was YES. [2024-05-12 13:25:08,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17582 conditions, 2546 events. 1453/2546 cut-off events. For 124765/124765 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14657 event pairs, 336 based on Foata normal form. 2/2421 useless extension candidates. Maximal degree in co-relation 17456. Up to 1583 conditions per place. [2024-05-12 13:25:08,621 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 201 selfloop transitions, 114 changer transitions 0/322 dead transitions. [2024-05-12 13:25:08,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 322 transitions, 5168 flow [2024-05-12 13:25:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:08,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:25:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 13:25:08,622 INFO L175 Difference]: Start difference. First operand has 258 places, 293 transitions, 3906 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:25:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 322 transitions, 5168 flow [2024-05-12 13:25:08,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 322 transitions, 4992 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:08,981 INFO L231 Difference]: Finished difference. Result has 263 places, 297 transitions, 4047 flow [2024-05-12 13:25:08,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4047, PETRI_PLACES=263, PETRI_TRANSITIONS=297} [2024-05-12 13:25:08,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-05-12 13:25:08,981 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 297 transitions, 4047 flow [2024-05-12 13:25:08,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:08,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:08,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:08,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:25:08,982 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:08,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1874730651, now seen corresponding path program 10 times [2024-05-12 13:25:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187846828] [2024-05-12 13:25:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187846828] [2024-05-12 13:25:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187846828] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:09,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816165606] [2024-05-12 13:25:09,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:09,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:09,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:09,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 297 transitions, 4047 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:09,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:09,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:10,339 INFO L124 PetriNetUnfolderBase]: 1449/2540 cut-off events. [2024-05-12 13:25:10,339 INFO L125 PetriNetUnfolderBase]: For 120279/120279 co-relation queries the response was YES. [2024-05-12 13:25:10,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17653 conditions, 2540 events. 1449/2540 cut-off events. For 120279/120279 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14631 event pairs, 320 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 17525. Up to 1582 conditions per place. [2024-05-12 13:25:10,361 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 201 selfloop transitions, 115 changer transitions 0/323 dead transitions. [2024-05-12 13:25:10,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 323 transitions, 5253 flow [2024-05-12 13:25:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-05-12 13:25:10,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-05-12 13:25:10,362 INFO L175 Difference]: Start difference. First operand has 263 places, 297 transitions, 4047 flow. Second operand 10 states and 166 transitions. [2024-05-12 13:25:10,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 323 transitions, 5253 flow [2024-05-12 13:25:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 323 transitions, 5123 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:10,726 INFO L231 Difference]: Finished difference. Result has 268 places, 298 transitions, 4172 flow [2024-05-12 13:25:10,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4172, PETRI_PLACES=268, PETRI_TRANSITIONS=298} [2024-05-12 13:25:10,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-05-12 13:25:10,727 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 298 transitions, 4172 flow [2024-05-12 13:25:10,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:10,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:10,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:10,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:25:10,727 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1392307609, now seen corresponding path program 4 times [2024-05-12 13:25:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025928610] [2024-05-12 13:25:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025928610] [2024-05-12 13:25:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025928610] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:11,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756432171] [2024-05-12 13:25:11,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:11,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:11,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:11,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 298 transitions, 4172 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:11,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:11,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:11,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:12,327 INFO L124 PetriNetUnfolderBase]: 1455/2557 cut-off events. [2024-05-12 13:25:12,327 INFO L125 PetriNetUnfolderBase]: For 120134/120134 co-relation queries the response was YES. [2024-05-12 13:25:12,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18077 conditions, 2557 events. 1455/2557 cut-off events. For 120134/120134 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 14816 event pairs, 388 based on Foata normal form. 1/2435 useless extension candidates. Maximal degree in co-relation 17947. Up to 2379 conditions per place. [2024-05-12 13:25:12,353 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 290 selfloop transitions, 21 changer transitions 0/318 dead transitions. [2024-05-12 13:25:12,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 318 transitions, 4926 flow [2024-05-12 13:25:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:25:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:25:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-05-12 13:25:12,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588516746411483 [2024-05-12 13:25:12,355 INFO L175 Difference]: Start difference. First operand has 268 places, 298 transitions, 4172 flow. Second operand 11 states and 150 transitions. [2024-05-12 13:25:12,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 318 transitions, 4926 flow [2024-05-12 13:25:12,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 318 transitions, 4687 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:25:12,795 INFO L231 Difference]: Finished difference. Result has 272 places, 300 transitions, 4033 flow [2024-05-12 13:25:12,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4033, PETRI_PLACES=272, PETRI_TRANSITIONS=300} [2024-05-12 13:25:12,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-05-12 13:25:12,796 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 300 transitions, 4033 flow [2024-05-12 13:25:12,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:12,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:12,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:12,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:25:12,796 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:12,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1402495139, now seen corresponding path program 11 times [2024-05-12 13:25:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:12,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041623389] [2024-05-12 13:25:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:13,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041623389] [2024-05-12 13:25:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041623389] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250474211] [2024-05-12 13:25:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:13,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:13,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 300 transitions, 4033 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:13,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:13,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:13,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:14,188 INFO L124 PetriNetUnfolderBase]: 1496/2618 cut-off events. [2024-05-12 13:25:14,189 INFO L125 PetriNetUnfolderBase]: For 136553/136553 co-relation queries the response was YES. [2024-05-12 13:25:14,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18325 conditions, 2618 events. 1496/2618 cut-off events. For 136553/136553 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 15183 event pairs, 389 based on Foata normal form. 4/2492 useless extension candidates. Maximal degree in co-relation 18194. Up to 2401 conditions per place. [2024-05-12 13:25:14,212 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 293 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-05-12 13:25:14,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 324 transitions, 5007 flow [2024-05-12 13:25:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-05-12 13:25:14,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-05-12 13:25:14,213 INFO L175 Difference]: Start difference. First operand has 272 places, 300 transitions, 4033 flow. Second operand 10 states and 145 transitions. [2024-05-12 13:25:14,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 324 transitions, 5007 flow [2024-05-12 13:25:14,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 324 transitions, 4939 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-05-12 13:25:14,631 INFO L231 Difference]: Finished difference. Result has 274 places, 305 transitions, 4143 flow [2024-05-12 13:25:14,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4143, PETRI_PLACES=274, PETRI_TRANSITIONS=305} [2024-05-12 13:25:14,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-05-12 13:25:14,631 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 305 transitions, 4143 flow [2024-05-12 13:25:14,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:14,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:14,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:14,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:25:14,631 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:14,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1049710481, now seen corresponding path program 10 times [2024-05-12 13:25:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617390606] [2024-05-12 13:25:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:15,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617390606] [2024-05-12 13:25:15,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617390606] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:15,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:15,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:25:15,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291660609] [2024-05-12 13:25:15,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:15,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:25:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:25:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:25:15,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:15,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 305 transitions, 4143 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:15,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:15,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:16,048 INFO L124 PetriNetUnfolderBase]: 1493/2606 cut-off events. [2024-05-12 13:25:16,048 INFO L125 PetriNetUnfolderBase]: For 124683/124683 co-relation queries the response was YES. [2024-05-12 13:25:16,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18204 conditions, 2606 events. 1493/2606 cut-off events. For 124683/124683 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15025 event pairs, 325 based on Foata normal form. 2/2473 useless extension candidates. Maximal degree in co-relation 18071. Up to 2179 conditions per place. [2024-05-12 13:25:16,072 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 255 selfloop transitions, 64 changer transitions 0/326 dead transitions. [2024-05-12 13:25:16,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 326 transitions, 4883 flow [2024-05-12 13:25:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:25:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:25:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 13:25:16,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-05-12 13:25:16,073 INFO L175 Difference]: Start difference. First operand has 274 places, 305 transitions, 4143 flow. Second operand 9 states and 142 transitions. [2024-05-12 13:25:16,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 326 transitions, 4883 flow [2024-05-12 13:25:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 326 transitions, 4767 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-05-12 13:25:16,538 INFO L231 Difference]: Finished difference. Result has 276 places, 305 transitions, 4160 flow [2024-05-12 13:25:16,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4160, PETRI_PLACES=276, PETRI_TRANSITIONS=305} [2024-05-12 13:25:16,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-05-12 13:25:16,538 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 305 transitions, 4160 flow [2024-05-12 13:25:16,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:16,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:16,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:25:16,539 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:16,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1049472897, now seen corresponding path program 12 times [2024-05-12 13:25:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150014267] [2024-05-12 13:25:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:16,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:17,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:17,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150014267] [2024-05-12 13:25:17,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150014267] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:17,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:17,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510585761] [2024-05-12 13:25:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:17,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:17,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:17,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 305 transitions, 4160 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:17,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:17,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:17,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:17,804 INFO L124 PetriNetUnfolderBase]: 1504/2622 cut-off events. [2024-05-12 13:25:17,804 INFO L125 PetriNetUnfolderBase]: For 127344/127344 co-relation queries the response was YES. [2024-05-12 13:25:17,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18286 conditions, 2622 events. 1504/2622 cut-off events. For 127344/127344 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 15123 event pairs, 344 based on Foata normal form. 2/2488 useless extension candidates. Maximal degree in co-relation 18152. Up to 1616 conditions per place. [2024-05-12 13:25:17,827 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 217 selfloop transitions, 108 changer transitions 0/332 dead transitions. [2024-05-12 13:25:17,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 332 transitions, 5423 flow [2024-05-12 13:25:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:25:17,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-05-12 13:25:17,828 INFO L175 Difference]: Start difference. First operand has 276 places, 305 transitions, 4160 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:25:17,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 332 transitions, 5423 flow [2024-05-12 13:25:18,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 332 transitions, 5276 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:18,255 INFO L231 Difference]: Finished difference. Result has 278 places, 307 transitions, 4275 flow [2024-05-12 13:25:18,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4013, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4275, PETRI_PLACES=278, PETRI_TRANSITIONS=307} [2024-05-12 13:25:18,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-05-12 13:25:18,256 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 307 transitions, 4275 flow [2024-05-12 13:25:18,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:18,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:18,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:18,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:25:18,256 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:18,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1402783439, now seen corresponding path program 13 times [2024-05-12 13:25:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608345494] [2024-05-12 13:25:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608345494] [2024-05-12 13:25:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608345494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966361535] [2024-05-12 13:25:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:18,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:18,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:18,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 307 transitions, 4275 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:18,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:18,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:18,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:19,602 INFO L124 PetriNetUnfolderBase]: 1513/2637 cut-off events. [2024-05-12 13:25:19,602 INFO L125 PetriNetUnfolderBase]: For 131588/131588 co-relation queries the response was YES. [2024-05-12 13:25:19,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18554 conditions, 2637 events. 1513/2637 cut-off events. For 131588/131588 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15239 event pairs, 307 based on Foata normal form. 4/2504 useless extension candidates. Maximal degree in co-relation 18419. Up to 1620 conditions per place. [2024-05-12 13:25:19,626 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 198 selfloop transitions, 129 changer transitions 0/334 dead transitions. [2024-05-12 13:25:19,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 334 transitions, 5561 flow [2024-05-12 13:25:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:25:19,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-05-12 13:25:19,627 INFO L175 Difference]: Start difference. First operand has 278 places, 307 transitions, 4275 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:25:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 334 transitions, 5561 flow [2024-05-12 13:25:20,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 334 transitions, 5334 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:25:20,032 INFO L231 Difference]: Finished difference. Result has 281 places, 309 transitions, 4367 flow [2024-05-12 13:25:20,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4367, PETRI_PLACES=281, PETRI_TRANSITIONS=309} [2024-05-12 13:25:20,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-05-12 13:25:20,033 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 309 transitions, 4367 flow [2024-05-12 13:25:20,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:20,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:20,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:20,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:25:20,034 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:20,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1402783129, now seen corresponding path program 5 times [2024-05-12 13:25:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714070584] [2024-05-12 13:25:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714070584] [2024-05-12 13:25:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714070584] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484980178] [2024-05-12 13:25:20,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:20,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:20,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:20,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 309 transitions, 4367 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:20,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:20,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:20,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:21,565 INFO L124 PetriNetUnfolderBase]: 1507/2628 cut-off events. [2024-05-12 13:25:21,565 INFO L125 PetriNetUnfolderBase]: For 121745/121745 co-relation queries the response was YES. [2024-05-12 13:25:21,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 2628 events. 1507/2628 cut-off events. For 121745/121745 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15203 event pairs, 297 based on Foata normal form. 3/2494 useless extension candidates. Maximal degree in co-relation 18209. Up to 1823 conditions per place. [2024-05-12 13:25:21,591 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 200 selfloop transitions, 130 changer transitions 0/337 dead transitions. [2024-05-12 13:25:21,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 337 transitions, 5520 flow [2024-05-12 13:25:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 13:25:21,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:25:21,592 INFO L175 Difference]: Start difference. First operand has 281 places, 309 transitions, 4367 flow. Second operand 10 states and 160 transitions. [2024-05-12 13:25:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 337 transitions, 5520 flow [2024-05-12 13:25:21,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 337 transitions, 5154 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-05-12 13:25:22,005 INFO L231 Difference]: Finished difference. Result has 284 places, 313 transitions, 4414 flow [2024-05-12 13:25:22,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4028, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4414, PETRI_PLACES=284, PETRI_TRANSITIONS=313} [2024-05-12 13:25:22,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-05-12 13:25:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 313 transitions, 4414 flow [2024-05-12 13:25:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:22,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:22,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:25:22,006 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:22,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1402791809, now seen corresponding path program 14 times [2024-05-12 13:25:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562710912] [2024-05-12 13:25:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:22,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:22,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562710912] [2024-05-12 13:25:22,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562710912] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:22,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:22,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48133955] [2024-05-12 13:25:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:22,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:22,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:22,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 313 transitions, 4414 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:22,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:22,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:22,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:23,355 INFO L124 PetriNetUnfolderBase]: 1501/2618 cut-off events. [2024-05-12 13:25:23,355 INFO L125 PetriNetUnfolderBase]: For 114569/114569 co-relation queries the response was YES. [2024-05-12 13:25:23,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 2618 events. 1501/2618 cut-off events. For 114569/114569 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15100 event pairs, 301 based on Foata normal form. 2/2483 useless extension candidates. Maximal degree in co-relation 17990. Up to 1612 conditions per place. [2024-05-12 13:25:23,380 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 138 changer transitions 0/337 dead transitions. [2024-05-12 13:25:23,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 337 transitions, 5502 flow [2024-05-12 13:25:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 13:25:23,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-05-12 13:25:23,381 INFO L175 Difference]: Start difference. First operand has 284 places, 313 transitions, 4414 flow. Second operand 10 states and 162 transitions. [2024-05-12 13:25:23,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 337 transitions, 5502 flow [2024-05-12 13:25:23,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 337 transitions, 5256 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-05-12 13:25:23,781 INFO L231 Difference]: Finished difference. Result has 289 places, 313 transitions, 4449 flow [2024-05-12 13:25:23,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4449, PETRI_PLACES=289, PETRI_TRANSITIONS=313} [2024-05-12 13:25:23,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-05-12 13:25:23,781 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 313 transitions, 4449 flow [2024-05-12 13:25:23,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:23,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:23,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:23,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:25:23,782 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:23,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2096606331, now seen corresponding path program 15 times [2024-05-12 13:25:23,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097012486] [2024-05-12 13:25:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097012486] [2024-05-12 13:25:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097012486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155745717] [2024-05-12 13:25:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:24,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:24,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 313 transitions, 4449 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:24,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:24,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:24,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:25,060 INFO L124 PetriNetUnfolderBase]: 1497/2612 cut-off events. [2024-05-12 13:25:25,060 INFO L125 PetriNetUnfolderBase]: For 110239/110239 co-relation queries the response was YES. [2024-05-12 13:25:25,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17961 conditions, 2612 events. 1497/2612 cut-off events. For 110239/110239 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15076 event pairs, 342 based on Foata normal form. 2/2477 useless extension candidates. Maximal degree in co-relation 17822. Up to 1611 conditions per place. [2024-05-12 13:25:25,084 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 218 selfloop transitions, 113 changer transitions 0/338 dead transitions. [2024-05-12 13:25:25,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 338 transitions, 5709 flow [2024-05-12 13:25:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-05-12 13:25:25,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-05-12 13:25:25,085 INFO L175 Difference]: Start difference. First operand has 289 places, 313 transitions, 4449 flow. Second operand 10 states and 168 transitions. [2024-05-12 13:25:25,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 338 transitions, 5709 flow [2024-05-12 13:25:25,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 338 transitions, 5378 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-05-12 13:25:25,499 INFO L231 Difference]: Finished difference. Result has 289 places, 313 transitions, 4349 flow [2024-05-12 13:25:25,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4349, PETRI_PLACES=289, PETRI_TRANSITIONS=313} [2024-05-12 13:25:25,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-05-12 13:25:25,499 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 313 transitions, 4349 flow [2024-05-12 13:25:25,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:25,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:25,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:25:25,500 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:25,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2096367011, now seen corresponding path program 6 times [2024-05-12 13:25:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325917775] [2024-05-12 13:25:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325917775] [2024-05-12 13:25:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325917775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407707825] [2024-05-12 13:25:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:26,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:26,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:26,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 313 transitions, 4349 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:26,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:26,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:27,140 INFO L124 PetriNetUnfolderBase]: 1493/2609 cut-off events. [2024-05-12 13:25:27,141 INFO L125 PetriNetUnfolderBase]: For 104882/104882 co-relation queries the response was YES. [2024-05-12 13:25:27,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17692 conditions, 2609 events. 1493/2609 cut-off events. For 104882/104882 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15120 event pairs, 370 based on Foata normal form. 1/2476 useless extension candidates. Maximal degree in co-relation 17552. Up to 2362 conditions per place. [2024-05-12 13:25:27,166 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 284 selfloop transitions, 39 changer transitions 0/330 dead transitions. [2024-05-12 13:25:27,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 330 transitions, 5085 flow [2024-05-12 13:25:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-05-12 13:25:27,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38421052631578945 [2024-05-12 13:25:27,167 INFO L175 Difference]: Start difference. First operand has 289 places, 313 transitions, 4349 flow. Second operand 10 states and 146 transitions. [2024-05-12 13:25:27,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 330 transitions, 5085 flow [2024-05-12 13:25:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 330 transitions, 4785 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-05-12 13:25:27,560 INFO L231 Difference]: Finished difference. Result has 290 places, 314 transitions, 4148 flow [2024-05-12 13:25:27,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4148, PETRI_PLACES=290, PETRI_TRANSITIONS=314} [2024-05-12 13:25:27,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-05-12 13:25:27,560 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 314 transitions, 4148 flow [2024-05-12 13:25:27,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:27,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:27,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:27,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:25:27,561 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:27,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1001939959, now seen corresponding path program 1 times [2024-05-12 13:25:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656171775] [2024-05-12 13:25:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:27,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:28,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656171775] [2024-05-12 13:25:28,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656171775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:28,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223223146] [2024-05-12 13:25:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:28,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:28,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 314 transitions, 4148 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:28,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:28,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:28,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:29,227 INFO L124 PetriNetUnfolderBase]: 1509/2634 cut-off events. [2024-05-12 13:25:29,227 INFO L125 PetriNetUnfolderBase]: For 108897/108897 co-relation queries the response was YES. [2024-05-12 13:25:29,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17406 conditions, 2634 events. 1509/2634 cut-off events. For 108897/108897 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 15246 event pairs, 199 based on Foata normal form. 2/2517 useless extension candidates. Maximal degree in co-relation 17266. Up to 2032 conditions per place. [2024-05-12 13:25:29,251 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 265 selfloop transitions, 75 changer transitions 0/347 dead transitions. [2024-05-12 13:25:29,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 347 transitions, 5050 flow [2024-05-12 13:25:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 13:25:29,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-05-12 13:25:29,252 INFO L175 Difference]: Start difference. First operand has 290 places, 314 transitions, 4148 flow. Second operand 10 states and 156 transitions. [2024-05-12 13:25:29,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 347 transitions, 5050 flow [2024-05-12 13:25:29,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 347 transitions, 4959 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:29,634 INFO L231 Difference]: Finished difference. Result has 292 places, 316 transitions, 4282 flow [2024-05-12 13:25:29,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4282, PETRI_PLACES=292, PETRI_TRANSITIONS=316} [2024-05-12 13:25:29,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-05-12 13:25:29,635 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 316 transitions, 4282 flow [2024-05-12 13:25:29,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:29,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:29,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:25:29,635 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:29,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -644393025, now seen corresponding path program 2 times [2024-05-12 13:25:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943588082] [2024-05-12 13:25:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:30,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943588082] [2024-05-12 13:25:30,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943588082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:30,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:30,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:30,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710908456] [2024-05-12 13:25:30,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:30,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:30,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:30,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:30,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:30,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:30,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 316 transitions, 4282 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:30,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:30,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:30,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:31,253 INFO L124 PetriNetUnfolderBase]: 1525/2665 cut-off events. [2024-05-12 13:25:31,253 INFO L125 PetriNetUnfolderBase]: For 112955/112955 co-relation queries the response was YES. [2024-05-12 13:25:31,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 2665 events. 1525/2665 cut-off events. For 112955/112955 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15485 event pairs, 347 based on Foata normal form. 2/2534 useless extension candidates. Maximal degree in co-relation 17706. Up to 2328 conditions per place. [2024-05-12 13:25:31,279 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 272 selfloop transitions, 65 changer transitions 0/344 dead transitions. [2024-05-12 13:25:31,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 344 transitions, 5146 flow [2024-05-12 13:25:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 13:25:31,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-05-12 13:25:31,280 INFO L175 Difference]: Start difference. First operand has 292 places, 316 transitions, 4282 flow. Second operand 10 states and 151 transitions. [2024-05-12 13:25:31,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 344 transitions, 5146 flow [2024-05-12 13:25:31,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 344 transitions, 4937 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:31,700 INFO L231 Difference]: Finished difference. Result has 294 places, 318 transitions, 4283 flow [2024-05-12 13:25:31,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4283, PETRI_PLACES=294, PETRI_TRANSITIONS=318} [2024-05-12 13:25:31,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-05-12 13:25:31,700 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 318 transitions, 4283 flow [2024-05-12 13:25:31,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:31,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:31,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:31,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:25:31,701 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:31,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1058490102, now seen corresponding path program 1 times [2024-05-12 13:25:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964818278] [2024-05-12 13:25:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964818278] [2024-05-12 13:25:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964818278] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371472657] [2024-05-12 13:25:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:32,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:32,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 4283 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:32,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:32,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:32,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:33,175 INFO L124 PetriNetUnfolderBase]: 1522/2660 cut-off events. [2024-05-12 13:25:33,176 INFO L125 PetriNetUnfolderBase]: For 107431/107431 co-relation queries the response was YES. [2024-05-12 13:25:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17602 conditions, 2660 events. 1522/2660 cut-off events. For 107431/107431 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15468 event pairs, 346 based on Foata normal form. 1/2527 useless extension candidates. Maximal degree in co-relation 17460. Up to 2327 conditions per place. [2024-05-12 13:25:33,200 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 268 selfloop transitions, 67 changer transitions 0/342 dead transitions. [2024-05-12 13:25:33,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 342 transitions, 5057 flow [2024-05-12 13:25:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 13:25:33,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39210526315789473 [2024-05-12 13:25:33,201 INFO L175 Difference]: Start difference. First operand has 294 places, 318 transitions, 4283 flow. Second operand 10 states and 149 transitions. [2024-05-12 13:25:33,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 342 transitions, 5057 flow [2024-05-12 13:25:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 342 transitions, 4853 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:33,614 INFO L231 Difference]: Finished difference. Result has 296 places, 318 transitions, 4221 flow [2024-05-12 13:25:33,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4221, PETRI_PLACES=296, PETRI_TRANSITIONS=318} [2024-05-12 13:25:33,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-05-12 13:25:33,615 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 318 transitions, 4221 flow [2024-05-12 13:25:33,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:33,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:33,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:33,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:25:33,615 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:33,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash 644576059, now seen corresponding path program 3 times [2024-05-12 13:25:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:33,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070086801] [2024-05-12 13:25:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:34,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:34,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070086801] [2024-05-12 13:25:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070086801] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:34,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037263350] [2024-05-12 13:25:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:34,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:34,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 318 transitions, 4221 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:34,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:34,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:34,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:35,606 INFO L124 PetriNetUnfolderBase]: 1604/2795 cut-off events. [2024-05-12 13:25:35,606 INFO L125 PetriNetUnfolderBase]: For 113424/113424 co-relation queries the response was YES. [2024-05-12 13:25:35,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18391 conditions, 2795 events. 1604/2795 cut-off events. For 113424/113424 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16409 event pairs, 356 based on Foata normal form. 2/2655 useless extension candidates. Maximal degree in co-relation 18248. Up to 2465 conditions per place. [2024-05-12 13:25:35,631 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 296 selfloop transitions, 55 changer transitions 0/358 dead transitions. [2024-05-12 13:25:35,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 358 transitions, 5295 flow [2024-05-12 13:25:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:25:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:25:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-05-12 13:25:35,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-05-12 13:25:35,633 INFO L175 Difference]: Start difference. First operand has 296 places, 318 transitions, 4221 flow. Second operand 11 states and 166 transitions. [2024-05-12 13:25:35,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 358 transitions, 5295 flow [2024-05-12 13:25:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 358 transitions, 5001 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-05-12 13:25:36,073 INFO L231 Difference]: Finished difference. Result has 296 places, 330 transitions, 4302 flow [2024-05-12 13:25:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4302, PETRI_PLACES=296, PETRI_TRANSITIONS=330} [2024-05-12 13:25:36,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-05-12 13:25:36,073 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 330 transitions, 4302 flow [2024-05-12 13:25:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:36,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:36,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:25:36,074 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash -295394453, now seen corresponding path program 4 times [2024-05-12 13:25:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762700149] [2024-05-12 13:25:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762700149] [2024-05-12 13:25:37,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762700149] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:37,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:37,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762222866] [2024-05-12 13:25:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:37,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:37,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:37,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 330 transitions, 4302 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:37,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:37,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:37,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:37,882 INFO L124 PetriNetUnfolderBase]: 1636/2852 cut-off events. [2024-05-12 13:25:37,882 INFO L125 PetriNetUnfolderBase]: For 117102/117102 co-relation queries the response was YES. [2024-05-12 13:25:37,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18556 conditions, 2852 events. 1636/2852 cut-off events. For 117102/117102 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 16838 event pairs, 366 based on Foata normal form. 2/2714 useless extension candidates. Maximal degree in co-relation 18411. Up to 2407 conditions per place. [2024-05-12 13:25:37,910 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 299 selfloop transitions, 58 changer transitions 0/364 dead transitions. [2024-05-12 13:25:37,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 364 transitions, 5274 flow [2024-05-12 13:25:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:25:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:25:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:25:37,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-05-12 13:25:37,912 INFO L175 Difference]: Start difference. First operand has 296 places, 330 transitions, 4302 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:25:37,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 364 transitions, 5274 flow [2024-05-12 13:25:38,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 364 transitions, 5117 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-05-12 13:25:38,399 INFO L231 Difference]: Finished difference. Result has 301 places, 334 transitions, 4365 flow [2024-05-12 13:25:38,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4145, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4365, PETRI_PLACES=301, PETRI_TRANSITIONS=334} [2024-05-12 13:25:38,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-05-12 13:25:38,399 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 334 transitions, 4365 flow [2024-05-12 13:25:38,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:38,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:38,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:38,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:25:38,400 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:38,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1890521075, now seen corresponding path program 5 times [2024-05-12 13:25:38,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:38,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801774138] [2024-05-12 13:25:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:39,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:39,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801774138] [2024-05-12 13:25:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801774138] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:39,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:39,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:39,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030585871] [2024-05-12 13:25:39,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:39,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:39,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:39,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:39,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 334 transitions, 4365 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:39,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:39,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:39,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:40,278 INFO L124 PetriNetUnfolderBase]: 1652/2880 cut-off events. [2024-05-12 13:25:40,278 INFO L125 PetriNetUnfolderBase]: For 120626/120626 co-relation queries the response was YES. [2024-05-12 13:25:40,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18842 conditions, 2880 events. 1652/2880 cut-off events. For 120626/120626 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17054 event pairs, 380 based on Foata normal form. 2/2741 useless extension candidates. Maximal degree in co-relation 18695. Up to 2432 conditions per place. [2024-05-12 13:25:40,307 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 286 selfloop transitions, 68 changer transitions 0/361 dead transitions. [2024-05-12 13:25:40,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 361 transitions, 5273 flow [2024-05-12 13:25:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:25:40,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-05-12 13:25:40,308 INFO L175 Difference]: Start difference. First operand has 301 places, 334 transitions, 4365 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:25:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 361 transitions, 5273 flow [2024-05-12 13:25:40,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 361 transitions, 5091 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:40,818 INFO L231 Difference]: Finished difference. Result has 303 places, 336 transitions, 4410 flow [2024-05-12 13:25:40,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4410, PETRI_PLACES=303, PETRI_TRANSITIONS=336} [2024-05-12 13:25:40,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-05-12 13:25:40,818 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 336 transitions, 4410 flow [2024-05-12 13:25:40,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:40,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:40,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:40,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:25:40,819 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:40,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1890526655, now seen corresponding path program 6 times [2024-05-12 13:25:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855369299] [2024-05-12 13:25:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855369299] [2024-05-12 13:25:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855369299] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389215665] [2024-05-12 13:25:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:41,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:41,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 336 transitions, 4410 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:41,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:41,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:41,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:42,713 INFO L124 PetriNetUnfolderBase]: 1668/2908 cut-off events. [2024-05-12 13:25:42,713 INFO L125 PetriNetUnfolderBase]: For 123808/123808 co-relation queries the response was YES. [2024-05-12 13:25:42,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19087 conditions, 2908 events. 1668/2908 cut-off events. For 123808/123808 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 17257 event pairs, 380 based on Foata normal form. 2/2770 useless extension candidates. Maximal degree in co-relation 18939. Up to 2416 conditions per place. [2024-05-12 13:25:42,742 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 287 selfloop transitions, 71 changer transitions 0/365 dead transitions. [2024-05-12 13:25:42,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 365 transitions, 5346 flow [2024-05-12 13:25:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:25:42,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-05-12 13:25:42,743 INFO L175 Difference]: Start difference. First operand has 303 places, 336 transitions, 4410 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:25:42,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 365 transitions, 5346 flow [2024-05-12 13:25:43,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 365 transitions, 5135 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:43,229 INFO L231 Difference]: Finished difference. Result has 305 places, 338 transitions, 4436 flow [2024-05-12 13:25:43,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4436, PETRI_PLACES=305, PETRI_TRANSITIONS=338} [2024-05-12 13:25:43,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-05-12 13:25:43,230 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 338 transitions, 4436 flow [2024-05-12 13:25:43,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:43,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:43,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:43,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:25:43,230 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:43,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:43,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1890670805, now seen corresponding path program 7 times [2024-05-12 13:25:43,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:43,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798776961] [2024-05-12 13:25:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798776961] [2024-05-12 13:25:44,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798776961] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:44,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:44,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574165982] [2024-05-12 13:25:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:44,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:44,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:44,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:44,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 338 transitions, 4436 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:44,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:44,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:44,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:45,107 INFO L124 PetriNetUnfolderBase]: 1703/2971 cut-off events. [2024-05-12 13:25:45,107 INFO L125 PetriNetUnfolderBase]: For 137297/137297 co-relation queries the response was YES. [2024-05-12 13:25:45,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19770 conditions, 2971 events. 1703/2971 cut-off events. For 137297/137297 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 17698 event pairs, 383 based on Foata normal form. 2/2834 useless extension candidates. Maximal degree in co-relation 19621. Up to 2352 conditions per place. [2024-05-12 13:25:45,138 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 287 selfloop transitions, 78 changer transitions 0/372 dead transitions. [2024-05-12 13:25:45,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 372 transitions, 5680 flow [2024-05-12 13:25:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 13:25:45,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-05-12 13:25:45,140 INFO L175 Difference]: Start difference. First operand has 305 places, 338 transitions, 4436 flow. Second operand 10 states and 162 transitions. [2024-05-12 13:25:45,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 372 transitions, 5680 flow [2024-05-12 13:25:45,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 372 transitions, 5459 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:45,784 INFO L231 Difference]: Finished difference. Result has 307 places, 342 transitions, 4560 flow [2024-05-12 13:25:45,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4560, PETRI_PLACES=307, PETRI_TRANSITIONS=342} [2024-05-12 13:25:45,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-05-12 13:25:45,784 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 342 transitions, 4560 flow [2024-05-12 13:25:45,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:45,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 13:25:45,785 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2033015937, now seen corresponding path program 8 times [2024-05-12 13:25:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214807314] [2024-05-12 13:25:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214807314] [2024-05-12 13:25:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214807314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:46,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:46,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:46,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157022771] [2024-05-12 13:25:46,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:46,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:46,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 342 transitions, 4560 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:46,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:46,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:46,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:47,517 INFO L124 PetriNetUnfolderBase]: 1719/3000 cut-off events. [2024-05-12 13:25:47,517 INFO L125 PetriNetUnfolderBase]: For 141269/141269 co-relation queries the response was YES. [2024-05-12 13:25:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 3000 events. 1719/3000 cut-off events. For 141269/141269 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 17972 event pairs, 384 based on Foata normal form. 2/2858 useless extension candidates. Maximal degree in co-relation 19857. Up to 2549 conditions per place. [2024-05-12 13:25:47,546 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 83 changer transitions 0/369 dead transitions. [2024-05-12 13:25:47,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 369 transitions, 5496 flow [2024-05-12 13:25:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-05-12 13:25:47,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-05-12 13:25:47,547 INFO L175 Difference]: Start difference. First operand has 307 places, 342 transitions, 4560 flow. Second operand 10 states and 153 transitions. [2024-05-12 13:25:47,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 369 transitions, 5496 flow [2024-05-12 13:25:48,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 369 transitions, 5294 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-05-12 13:25:48,196 INFO L231 Difference]: Finished difference. Result has 311 places, 344 transitions, 4627 flow [2024-05-12 13:25:48,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4372, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4627, PETRI_PLACES=311, PETRI_TRANSITIONS=344} [2024-05-12 13:25:48,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-05-12 13:25:48,197 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 344 transitions, 4627 flow [2024-05-12 13:25:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:48,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:48,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:48,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 13:25:48,197 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:48,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2040367587, now seen corresponding path program 9 times [2024-05-12 13:25:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:48,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444243770] [2024-05-12 13:25:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:48,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:49,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444243770] [2024-05-12 13:25:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444243770] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:49,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957680183] [2024-05-12 13:25:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:49,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:49,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 344 transitions, 4627 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:49,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:49,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:49,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:50,048 INFO L124 PetriNetUnfolderBase]: 1735/3028 cut-off events. [2024-05-12 13:25:50,049 INFO L125 PetriNetUnfolderBase]: For 142534/142534 co-relation queries the response was YES. [2024-05-12 13:25:50,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20292 conditions, 3028 events. 1735/3028 cut-off events. For 142534/142534 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18174 event pairs, 394 based on Foata normal form. 2/2886 useless extension candidates. Maximal degree in co-relation 20140. Up to 2577 conditions per place. [2024-05-12 13:25:50,079 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 284 selfloop transitions, 80 changer transitions 0/371 dead transitions. [2024-05-12 13:25:50,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 371 transitions, 5557 flow [2024-05-12 13:25:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 13:25:50,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-05-12 13:25:50,080 INFO L175 Difference]: Start difference. First operand has 311 places, 344 transitions, 4627 flow. Second operand 10 states and 154 transitions. [2024-05-12 13:25:50,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 371 transitions, 5557 flow [2024-05-12 13:25:50,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 371 transitions, 5322 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:50,705 INFO L231 Difference]: Finished difference. Result has 313 places, 346 transitions, 4645 flow [2024-05-12 13:25:50,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4645, PETRI_PLACES=313, PETRI_TRANSITIONS=346} [2024-05-12 13:25:50,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-05-12 13:25:50,706 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 346 transitions, 4645 flow [2024-05-12 13:25:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:50,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:50,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:50,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 13:25:50,707 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:50,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash 234753426, now seen corresponding path program 1 times [2024-05-12 13:25:50,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760359000] [2024-05-12 13:25:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:51,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760359000] [2024-05-12 13:25:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760359000] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664746132] [2024-05-12 13:25:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:51,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:51,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:51,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 346 transitions, 4645 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:51,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:51,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:51,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:52,652 INFO L124 PetriNetUnfolderBase]: 1819/3188 cut-off events. [2024-05-12 13:25:52,652 INFO L125 PetriNetUnfolderBase]: For 195935/195935 co-relation queries the response was YES. [2024-05-12 13:25:52,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21323 conditions, 3188 events. 1819/3188 cut-off events. For 195935/195935 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19377 event pairs, 433 based on Foata normal form. 12/3055 useless extension candidates. Maximal degree in co-relation 21170. Up to 2477 conditions per place. [2024-05-12 13:25:52,688 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 275 selfloop transitions, 98 changer transitions 0/380 dead transitions. [2024-05-12 13:25:52,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 380 transitions, 5653 flow [2024-05-12 13:25:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:25:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:25:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 13:25:52,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-05-12 13:25:52,691 INFO L175 Difference]: Start difference. First operand has 313 places, 346 transitions, 4645 flow. Second operand 11 states and 172 transitions. [2024-05-12 13:25:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 380 transitions, 5653 flow [2024-05-12 13:25:53,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 380 transitions, 5420 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-05-12 13:25:53,422 INFO L231 Difference]: Finished difference. Result has 316 places, 348 transitions, 4716 flow [2024-05-12 13:25:53,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4716, PETRI_PLACES=316, PETRI_TRANSITIONS=348} [2024-05-12 13:25:53,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-05-12 13:25:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 348 transitions, 4716 flow [2024-05-12 13:25:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:53,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:53,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 13:25:53,424 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2040373167, now seen corresponding path program 10 times [2024-05-12 13:25:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763568016] [2024-05-12 13:25:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763568016] [2024-05-12 13:25:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763568016] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:54,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076108149] [2024-05-12 13:25:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:54,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:54,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:54,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 348 transitions, 4716 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:54,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:54,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:55,298 INFO L124 PetriNetUnfolderBase]: 1816/3181 cut-off events. [2024-05-12 13:25:55,298 INFO L125 PetriNetUnfolderBase]: For 144262/144262 co-relation queries the response was YES. [2024-05-12 13:25:55,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21132 conditions, 3181 events. 1816/3181 cut-off events. For 144262/144262 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19388 event pairs, 432 based on Foata normal form. 2/3040 useless extension candidates. Maximal degree in co-relation 20978. Up to 2666 conditions per place. [2024-05-12 13:25:55,337 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 283 selfloop transitions, 85 changer transitions 0/375 dead transitions. [2024-05-12 13:25:55,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 375 transitions, 5586 flow [2024-05-12 13:25:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-05-12 13:25:55,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-05-12 13:25:55,338 INFO L175 Difference]: Start difference. First operand has 316 places, 348 transitions, 4716 flow. Second operand 10 states and 157 transitions. [2024-05-12 13:25:55,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 375 transitions, 5586 flow [2024-05-12 13:25:55,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 375 transitions, 5256 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-05-12 13:25:55,990 INFO L231 Difference]: Finished difference. Result has 317 places, 348 transitions, 4561 flow [2024-05-12 13:25:55,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4561, PETRI_PLACES=317, PETRI_TRANSITIONS=348} [2024-05-12 13:25:55,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-05-12 13:25:55,991 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 348 transitions, 4561 flow [2024-05-12 13:25:55,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:55,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:55,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:55,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 13:25:55,991 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:55,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash -785040675, now seen corresponding path program 11 times [2024-05-12 13:25:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844658098] [2024-05-12 13:25:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:56,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:56,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844658098] [2024-05-12 13:25:56,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844658098] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:56,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:56,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:25:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976297919] [2024-05-12 13:25:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:25:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:25:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:25:57,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:57,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 348 transitions, 4561 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:25:57,946 INFO L124 PetriNetUnfolderBase]: 1832/3211 cut-off events. [2024-05-12 13:25:57,946 INFO L125 PetriNetUnfolderBase]: For 140744/140744 co-relation queries the response was YES. [2024-05-12 13:25:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20794 conditions, 3211 events. 1832/3211 cut-off events. For 140744/140744 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19624 event pairs, 419 based on Foata normal form. 2/3063 useless extension candidates. Maximal degree in co-relation 20639. Up to 2599 conditions per place. [2024-05-12 13:25:57,986 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 264 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2024-05-12 13:25:57,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 374 transitions, 5507 flow [2024-05-12 13:25:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:25:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:25:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-05-12 13:25:57,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-05-12 13:25:57,988 INFO L175 Difference]: Start difference. First operand has 317 places, 348 transitions, 4561 flow. Second operand 10 states and 157 transitions. [2024-05-12 13:25:57,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 374 transitions, 5507 flow [2024-05-12 13:25:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 374 transitions, 5298 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-05-12 13:25:58,620 INFO L231 Difference]: Finished difference. Result has 318 places, 350 transitions, 4663 flow [2024-05-12 13:25:58,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4352, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4663, PETRI_PLACES=318, PETRI_TRANSITIONS=350} [2024-05-12 13:25:58,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-05-12 13:25:58,620 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 350 transitions, 4663 flow [2024-05-12 13:25:58,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:58,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:25:58,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:25:58,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 13:25:58,621 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:25:58,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:25:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -784773269, now seen corresponding path program 1 times [2024-05-12 13:25:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:25:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092038459] [2024-05-12 13:25:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:25:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:25:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:25:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:25:59,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:25:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092038459] [2024-05-12 13:25:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092038459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:25:59,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:25:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:25:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984594614] [2024-05-12 13:25:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:25:59,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:25:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:25:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:25:59,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:25:59,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:25:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 350 transitions, 4663 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:25:59,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:25:59,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:25:59,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:00,626 INFO L124 PetriNetUnfolderBase]: 1845/3229 cut-off events. [2024-05-12 13:26:00,626 INFO L125 PetriNetUnfolderBase]: For 144062/144062 co-relation queries the response was YES. [2024-05-12 13:26:00,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20993 conditions, 3229 events. 1845/3229 cut-off events. For 144062/144062 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19724 event pairs, 426 based on Foata normal form. 2/3078 useless extension candidates. Maximal degree in co-relation 20837. Up to 2399 conditions per place. [2024-05-12 13:26:00,659 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 243 selfloop transitions, 127 changer transitions 0/377 dead transitions. [2024-05-12 13:26:00,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 377 transitions, 5555 flow [2024-05-12 13:26:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 13:26:00,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-05-12 13:26:00,661 INFO L175 Difference]: Start difference. First operand has 318 places, 350 transitions, 4663 flow. Second operand 11 states and 171 transitions. [2024-05-12 13:26:00,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 377 transitions, 5555 flow [2024-05-12 13:26:01,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 377 transitions, 5260 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:01,351 INFO L231 Difference]: Finished difference. Result has 321 places, 352 transitions, 4669 flow [2024-05-12 13:26:01,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4669, PETRI_PLACES=321, PETRI_TRANSITIONS=352} [2024-05-12 13:26:01,352 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-05-12 13:26:01,352 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 352 transitions, 4669 flow [2024-05-12 13:26:01,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:01,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:01,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:01,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 13:26:01,353 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:01,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1619418943, now seen corresponding path program 12 times [2024-05-12 13:26:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754378402] [2024-05-12 13:26:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754378402] [2024-05-12 13:26:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754378402] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:02,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:02,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:26:02,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080328451] [2024-05-12 13:26:02,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:02,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:26:02,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:02,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:26:02,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:26:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:02,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 352 transitions, 4669 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:02,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:02,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:02,980 INFO L124 PetriNetUnfolderBase]: 1861/3257 cut-off events. [2024-05-12 13:26:02,980 INFO L125 PetriNetUnfolderBase]: For 146699/146699 co-relation queries the response was YES. [2024-05-12 13:26:03,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21241 conditions, 3257 events. 1861/3257 cut-off events. For 146699/146699 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 19944 event pairs, 447 based on Foata normal form. 2/3107 useless extension candidates. Maximal degree in co-relation 21084. Up to 2646 conditions per place. [2024-05-12 13:26:03,014 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 278 selfloop transitions, 92 changer transitions 0/377 dead transitions. [2024-05-12 13:26:03,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 377 transitions, 5621 flow [2024-05-12 13:26:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 13:26:03,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-05-12 13:26:03,015 INFO L175 Difference]: Start difference. First operand has 321 places, 352 transitions, 4669 flow. Second operand 10 states and 156 transitions. [2024-05-12 13:26:03,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 377 transitions, 5621 flow [2024-05-12 13:26:03,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 377 transitions, 5418 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:26:03,713 INFO L231 Difference]: Finished difference. Result has 324 places, 354 transitions, 4759 flow [2024-05-12 13:26:03,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4759, PETRI_PLACES=324, PETRI_TRANSITIONS=354} [2024-05-12 13:26:03,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-05-12 13:26:03,714 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 354 transitions, 4759 flow [2024-05-12 13:26:03,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:03,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:03,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:03,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 13:26:03,714 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:03,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:03,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1619413363, now seen corresponding path program 13 times [2024-05-12 13:26:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:03,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736684497] [2024-05-12 13:26:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:03,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736684497] [2024-05-12 13:26:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736684497] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:04,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:04,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139559570] [2024-05-12 13:26:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:04,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:04,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:04,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 354 transitions, 4759 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:04,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:04,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:05,551 INFO L124 PetriNetUnfolderBase]: 1877/3286 cut-off events. [2024-05-12 13:26:05,551 INFO L125 PetriNetUnfolderBase]: For 152392/152392 co-relation queries the response was YES. [2024-05-12 13:26:05,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21510 conditions, 3286 events. 1877/3286 cut-off events. For 152392/152392 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20133 event pairs, 441 based on Foata normal form. 2/3136 useless extension candidates. Maximal degree in co-relation 21352. Up to 2630 conditions per place. [2024-05-12 13:26:05,587 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 95 changer transitions 0/381 dead transitions. [2024-05-12 13:26:05,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 381 transitions, 5739 flow [2024-05-12 13:26:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 13:26:05,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:26:05,588 INFO L175 Difference]: Start difference. First operand has 324 places, 354 transitions, 4759 flow. Second operand 10 states and 160 transitions. [2024-05-12 13:26:05,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 381 transitions, 5739 flow [2024-05-12 13:26:06,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 381 transitions, 5462 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:06,338 INFO L231 Difference]: Finished difference. Result has 326 places, 356 transitions, 4785 flow [2024-05-12 13:26:06,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4785, PETRI_PLACES=326, PETRI_TRANSITIONS=356} [2024-05-12 13:26:06,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-05-12 13:26:06,339 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 356 transitions, 4785 flow [2024-05-12 13:26:06,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:06,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:06,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:06,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 13:26:06,339 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:06,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash -784763628, now seen corresponding path program 2 times [2024-05-12 13:26:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057812789] [2024-05-12 13:26:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:06,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057812789] [2024-05-12 13:26:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057812789] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892067536] [2024-05-12 13:26:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:07,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:07,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 356 transitions, 4785 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:07,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:08,202 INFO L124 PetriNetUnfolderBase]: 1957/3440 cut-off events. [2024-05-12 13:26:08,202 INFO L125 PetriNetUnfolderBase]: For 212454/212454 co-relation queries the response was YES. [2024-05-12 13:26:08,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22365 conditions, 3440 events. 1957/3440 cut-off events. For 212454/212454 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 21345 event pairs, 466 based on Foata normal form. 14/3300 useless extension candidates. Maximal degree in co-relation 22206. Up to 2421 conditions per place. [2024-05-12 13:26:08,241 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 250 selfloop transitions, 132 changer transitions 0/389 dead transitions. [2024-05-12 13:26:08,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 389 transitions, 5819 flow [2024-05-12 13:26:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:26:08,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-05-12 13:26:08,242 INFO L175 Difference]: Start difference. First operand has 326 places, 356 transitions, 4785 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:26:08,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 389 transitions, 5819 flow [2024-05-12 13:26:08,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 389 transitions, 5518 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:08,982 INFO L231 Difference]: Finished difference. Result has 330 places, 358 transitions, 4881 flow [2024-05-12 13:26:08,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4881, PETRI_PLACES=330, PETRI_TRANSITIONS=358} [2024-05-12 13:26:08,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-05-12 13:26:08,984 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 358 transitions, 4881 flow [2024-05-12 13:26:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:08,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:08,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:08,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 13:26:08,985 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:08,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash -792392325, now seen corresponding path program 14 times [2024-05-12 13:26:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:08,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686595532] [2024-05-12 13:26:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:09,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:09,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686595532] [2024-05-12 13:26:09,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686595532] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:09,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:09,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306098765] [2024-05-12 13:26:09,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:09,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:09,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:10,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:10,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 358 transitions, 4881 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:10,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:10,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:10,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:11,029 INFO L124 PetriNetUnfolderBase]: 1973/3469 cut-off events. [2024-05-12 13:26:11,029 INFO L125 PetriNetUnfolderBase]: For 160504/160504 co-relation queries the response was YES. [2024-05-12 13:26:11,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22732 conditions, 3469 events. 1973/3469 cut-off events. For 160504/160504 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21586 event pairs, 463 based on Foata normal form. 2/3316 useless extension candidates. Maximal degree in co-relation 22571. Up to 2852 conditions per place. [2024-05-12 13:26:11,062 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 272 selfloop transitions, 104 changer transitions 0/383 dead transitions. [2024-05-12 13:26:11,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 383 transitions, 5855 flow [2024-05-12 13:26:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:26:11,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-05-12 13:26:11,064 INFO L175 Difference]: Start difference. First operand has 330 places, 358 transitions, 4881 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:26:11,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 383 transitions, 5855 flow [2024-05-12 13:26:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 383 transitions, 5456 flow, removed 47 selfloop flow, removed 11 redundant places. [2024-05-12 13:26:11,770 INFO L231 Difference]: Finished difference. Result has 329 places, 360 transitions, 4809 flow [2024-05-12 13:26:11,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4809, PETRI_PLACES=329, PETRI_TRANSITIONS=360} [2024-05-12 13:26:11,770 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-05-12 13:26:11,770 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 360 transitions, 4809 flow [2024-05-12 13:26:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:11,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:11,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 13:26:11,771 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:11,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash -527664950, now seen corresponding path program 3 times [2024-05-12 13:26:11,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:11,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170688102] [2024-05-12 13:26:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:13,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170688102] [2024-05-12 13:26:13,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170688102] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:13,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:13,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847318515] [2024-05-12 13:26:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:13,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:13,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:13,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:13,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 360 transitions, 4809 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:13,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:13,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:14,260 INFO L124 PetriNetUnfolderBase]: 1989/3505 cut-off events. [2024-05-12 13:26:14,260 INFO L125 PetriNetUnfolderBase]: For 152375/152375 co-relation queries the response was YES. [2024-05-12 13:26:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22395 conditions, 3505 events. 1989/3505 cut-off events. For 152375/152375 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21984 event pairs, 598 based on Foata normal form. 2/3357 useless extension candidates. Maximal degree in co-relation 22233. Up to 3303 conditions per place. [2024-05-12 13:26:14,298 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 356 selfloop transitions, 20 changer transitions 0/383 dead transitions. [2024-05-12 13:26:14,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 383 transitions, 5781 flow [2024-05-12 13:26:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:26:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:26:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-05-12 13:26:14,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35526315789473684 [2024-05-12 13:26:14,299 INFO L175 Difference]: Start difference. First operand has 329 places, 360 transitions, 4809 flow. Second operand 12 states and 162 transitions. [2024-05-12 13:26:14,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 383 transitions, 5781 flow [2024-05-12 13:26:14,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 383 transitions, 5470 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:14,983 INFO L231 Difference]: Finished difference. Result has 333 places, 362 transitions, 4661 flow [2024-05-12 13:26:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4661, PETRI_PLACES=333, PETRI_TRANSITIONS=362} [2024-05-12 13:26:14,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-05-12 13:26:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 362 transitions, 4661 flow [2024-05-12 13:26:14,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:14,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:14,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 13:26:14,984 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:14,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2005528555, now seen corresponding path program 15 times [2024-05-12 13:26:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:14,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532682558] [2024-05-12 13:26:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:15,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:15,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532682558] [2024-05-12 13:26:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532682558] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:15,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:15,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234555587] [2024-05-12 13:26:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 362 transitions, 4661 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:16,894 INFO L124 PetriNetUnfolderBase]: 2024/3561 cut-off events. [2024-05-12 13:26:16,894 INFO L125 PetriNetUnfolderBase]: For 168072/168072 co-relation queries the response was YES. [2024-05-12 13:26:16,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22828 conditions, 3561 events. 2024/3561 cut-off events. For 168072/168072 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22343 event pairs, 480 based on Foata normal form. 2/3409 useless extension candidates. Maximal degree in co-relation 22665. Up to 2858 conditions per place. [2024-05-12 13:26:16,934 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 274 selfloop transitions, 111 changer transitions 0/392 dead transitions. [2024-05-12 13:26:16,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 392 transitions, 5997 flow [2024-05-12 13:26:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:26:16,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-05-12 13:26:16,935 INFO L175 Difference]: Start difference. First operand has 333 places, 362 transitions, 4661 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:26:16,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 392 transitions, 5997 flow [2024-05-12 13:26:17,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 392 transitions, 5833 flow, removed 57 selfloop flow, removed 10 redundant places. [2024-05-12 13:26:17,821 INFO L231 Difference]: Finished difference. Result has 333 places, 366 transitions, 4960 flow [2024-05-12 13:26:17,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4960, PETRI_PLACES=333, PETRI_TRANSITIONS=366} [2024-05-12 13:26:17,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-05-12 13:26:17,821 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 366 transitions, 4960 flow [2024-05-12 13:26:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:17,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:17,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 13:26:17,821 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1826072383, now seen corresponding path program 16 times [2024-05-12 13:26:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120747555] [2024-05-12 13:26:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120747555] [2024-05-12 13:26:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120747555] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182174386] [2024-05-12 13:26:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:18,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:18,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 366 transitions, 4960 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:18,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:18,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:18,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:19,678 INFO L124 PetriNetUnfolderBase]: 2040/3589 cut-off events. [2024-05-12 13:26:19,678 INFO L125 PetriNetUnfolderBase]: For 173242/173242 co-relation queries the response was YES. [2024-05-12 13:26:19,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23320 conditions, 3589 events. 2040/3589 cut-off events. For 173242/173242 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 22569 event pairs, 495 based on Foata normal form. 2/3434 useless extension candidates. Maximal degree in co-relation 23157. Up to 2969 conditions per place. [2024-05-12 13:26:19,718 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 295 selfloop transitions, 90 changer transitions 0/392 dead transitions. [2024-05-12 13:26:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 392 transitions, 5966 flow [2024-05-12 13:26:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 13:26:19,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-05-12 13:26:19,719 INFO L175 Difference]: Start difference. First operand has 333 places, 366 transitions, 4960 flow. Second operand 10 states and 158 transitions. [2024-05-12 13:26:19,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 392 transitions, 5966 flow [2024-05-12 13:26:20,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 392 transitions, 5696 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-05-12 13:26:20,714 INFO L231 Difference]: Finished difference. Result has 337 places, 368 transitions, 4999 flow [2024-05-12 13:26:20,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4690, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4999, PETRI_PLACES=337, PETRI_TRANSITIONS=368} [2024-05-12 13:26:20,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-05-12 13:26:20,715 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 368 transitions, 4999 flow [2024-05-12 13:26:20,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:20,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:20,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:20,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 13:26:20,715 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1826080319, now seen corresponding path program 2 times [2024-05-12 13:26:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361271857] [2024-05-12 13:26:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361271857] [2024-05-12 13:26:21,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361271857] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:21,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:21,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093103163] [2024-05-12 13:26:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:21,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:21,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 368 transitions, 4999 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:21,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:21,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:21,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:22,609 INFO L124 PetriNetUnfolderBase]: 2053/3608 cut-off events. [2024-05-12 13:26:22,609 INFO L125 PetriNetUnfolderBase]: For 172912/172912 co-relation queries the response was YES. [2024-05-12 13:26:22,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23435 conditions, 3608 events. 2053/3608 cut-off events. For 172912/172912 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22645 event pairs, 520 based on Foata normal form. 2/3449 useless extension candidates. Maximal degree in co-relation 23270. Up to 2546 conditions per place. [2024-05-12 13:26:22,641 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 268 selfloop transitions, 122 changer transitions 0/397 dead transitions. [2024-05-12 13:26:22,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 397 transitions, 6351 flow [2024-05-12 13:26:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:26:22,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-05-12 13:26:22,642 INFO L175 Difference]: Start difference. First operand has 337 places, 368 transitions, 4999 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:26:22,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 397 transitions, 6351 flow [2024-05-12 13:26:23,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 397 transitions, 6058 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:23,516 INFO L231 Difference]: Finished difference. Result has 340 places, 370 transitions, 4993 flow [2024-05-12 13:26:23,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4706, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4993, PETRI_PLACES=340, PETRI_TRANSITIONS=370} [2024-05-12 13:26:23,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 298 predicate places. [2024-05-12 13:26:23,517 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 370 transitions, 4993 flow [2024-05-12 13:26:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:23,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:23,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:23,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 13:26:23,517 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:23,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash -222912661, now seen corresponding path program 3 times [2024-05-12 13:26:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623338235] [2024-05-12 13:26:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:24,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623338235] [2024-05-12 13:26:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623338235] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:24,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:24,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499192292] [2024-05-12 13:26:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:24,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:24,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:24,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 370 transitions, 4993 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:24,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:24,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:24,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:25,627 INFO L124 PetriNetUnfolderBase]: 2049/3612 cut-off events. [2024-05-12 13:26:25,627 INFO L125 PetriNetUnfolderBase]: For 161956/161956 co-relation queries the response was YES. [2024-05-12 13:26:25,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23141 conditions, 3612 events. 2049/3612 cut-off events. For 161956/161956 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 22796 event pairs, 602 based on Foata normal form. 2/3458 useless extension candidates. Maximal degree in co-relation 22975. Up to 3405 conditions per place. [2024-05-12 13:26:25,664 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 364 selfloop transitions, 19 changer transitions 0/390 dead transitions. [2024-05-12 13:26:25,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 390 transitions, 5853 flow [2024-05-12 13:26:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-05-12 13:26:25,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-05-12 13:26:25,665 INFO L175 Difference]: Start difference. First operand has 340 places, 370 transitions, 4993 flow. Second operand 11 states and 152 transitions. [2024-05-12 13:26:25,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 390 transitions, 5853 flow [2024-05-12 13:26:26,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 390 transitions, 5579 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-05-12 13:26:26,587 INFO L231 Difference]: Finished difference. Result has 342 places, 370 transitions, 4762 flow [2024-05-12 13:26:26,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4719, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4762, PETRI_PLACES=342, PETRI_TRANSITIONS=370} [2024-05-12 13:26:26,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-05-12 13:26:26,587 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 370 transitions, 4762 flow [2024-05-12 13:26:26,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:26,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:26,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:26,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 13:26:26,588 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1226356669, now seen corresponding path program 17 times [2024-05-12 13:26:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306199778] [2024-05-12 13:26:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306199778] [2024-05-12 13:26:27,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306199778] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:27,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:27,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:27,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238862460] [2024-05-12 13:26:27,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:27,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:27,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:27,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:27,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:27,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:27,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 370 transitions, 4762 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:27,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:27,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:27,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:28,538 INFO L124 PetriNetUnfolderBase]: 2046/3597 cut-off events. [2024-05-12 13:26:28,539 INFO L125 PetriNetUnfolderBase]: For 151033/151033 co-relation queries the response was YES. [2024-05-12 13:26:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22401 conditions, 3597 events. 2046/3597 cut-off events. For 151033/151033 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22651 event pairs, 488 based on Foata normal form. 2/3439 useless extension candidates. Maximal degree in co-relation 22234. Up to 2977 conditions per place. [2024-05-12 13:26:28,585 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 275 selfloop transitions, 111 changer transitions 0/393 dead transitions. [2024-05-12 13:26:28,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 393 transitions, 5646 flow [2024-05-12 13:26:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 13:26:28,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-05-12 13:26:28,586 INFO L175 Difference]: Start difference. First operand has 342 places, 370 transitions, 4762 flow. Second operand 10 states and 154 transitions. [2024-05-12 13:26:28,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 393 transitions, 5646 flow [2024-05-12 13:26:29,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 393 transitions, 5512 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-05-12 13:26:29,494 INFO L231 Difference]: Finished difference. Result has 342 places, 370 transitions, 4855 flow [2024-05-12 13:26:29,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4855, PETRI_PLACES=342, PETRI_TRANSITIONS=370} [2024-05-12 13:26:29,495 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-05-12 13:26:29,495 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 370 transitions, 4855 flow [2024-05-12 13:26:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:29,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:29,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 13:26:29,495 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:29,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -536602250, now seen corresponding path program 4 times [2024-05-12 13:26:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074444358] [2024-05-12 13:26:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:30,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074444358] [2024-05-12 13:26:30,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074444358] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:30,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:30,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118131965] [2024-05-12 13:26:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:30,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:30,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:30,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 370 transitions, 4855 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:30,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:30,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:30,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:31,556 INFO L124 PetriNetUnfolderBase]: 2062/3630 cut-off events. [2024-05-12 13:26:31,557 INFO L125 PetriNetUnfolderBase]: For 155482/155482 co-relation queries the response was YES. [2024-05-12 13:26:31,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22951 conditions, 3630 events. 2062/3630 cut-off events. For 155482/155482 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 22910 event pairs, 567 based on Foata normal form. 2/3474 useless extension candidates. Maximal degree in co-relation 22783. Up to 3345 conditions per place. [2024-05-12 13:26:31,600 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 343 selfloop transitions, 44 changer transitions 0/394 dead transitions. [2024-05-12 13:26:31,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 394 transitions, 5867 flow [2024-05-12 13:26:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-05-12 13:26:31,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803827751196172 [2024-05-12 13:26:31,602 INFO L175 Difference]: Start difference. First operand has 342 places, 370 transitions, 4855 flow. Second operand 11 states and 159 transitions. [2024-05-12 13:26:31,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 394 transitions, 5867 flow [2024-05-12 13:26:32,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 394 transitions, 5624 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 13:26:32,428 INFO L231 Difference]: Finished difference. Result has 345 places, 373 transitions, 4846 flow [2024-05-12 13:26:32,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4612, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4846, PETRI_PLACES=345, PETRI_TRANSITIONS=373} [2024-05-12 13:26:32,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-05-12 13:26:32,429 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 373 transitions, 4846 flow [2024-05-12 13:26:32,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:32,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:32,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 13:26:32,429 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:32,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1818720733, now seen corresponding path program 18 times [2024-05-12 13:26:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926922243] [2024-05-12 13:26:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926922243] [2024-05-12 13:26:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926922243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:33,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:33,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362992602] [2024-05-12 13:26:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:33,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:33,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 373 transitions, 4846 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:33,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:33,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:33,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:34,448 INFO L124 PetriNetUnfolderBase]: 2078/3653 cut-off events. [2024-05-12 13:26:34,449 INFO L125 PetriNetUnfolderBase]: For 161416/161416 co-relation queries the response was YES. [2024-05-12 13:26:34,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23071 conditions, 3653 events. 2078/3653 cut-off events. For 161416/161416 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23014 event pairs, 511 based on Foata normal form. 2/3495 useless extension candidates. Maximal degree in co-relation 22901. Up to 3033 conditions per place. [2024-05-12 13:26:34,499 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 303 selfloop transitions, 89 changer transitions 0/399 dead transitions. [2024-05-12 13:26:34,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 399 transitions, 5872 flow [2024-05-12 13:26:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 13:26:34,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-05-12 13:26:34,500 INFO L175 Difference]: Start difference. First operand has 345 places, 373 transitions, 4846 flow. Second operand 10 states and 159 transitions. [2024-05-12 13:26:34,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 399 transitions, 5872 flow [2024-05-12 13:26:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 399 transitions, 5672 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:35,400 INFO L231 Difference]: Finished difference. Result has 347 places, 375 transitions, 4959 flow [2024-05-12 13:26:35,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4646, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4959, PETRI_PLACES=347, PETRI_TRANSITIONS=375} [2024-05-12 13:26:35,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-05-12 13:26:35,400 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 375 transitions, 4959 flow [2024-05-12 13:26:35,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:35,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:35,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:35,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 13:26:35,400 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:35,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -211475180, now seen corresponding path program 5 times [2024-05-12 13:26:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287260301] [2024-05-12 13:26:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:36,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287260301] [2024-05-12 13:26:36,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287260301] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:36,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:36,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763420228] [2024-05-12 13:26:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:36,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:36,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 375 transitions, 4959 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:36,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:36,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:36,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:37,877 INFO L124 PetriNetUnfolderBase]: 2113/3724 cut-off events. [2024-05-12 13:26:37,877 INFO L125 PetriNetUnfolderBase]: For 181876/181876 co-relation queries the response was YES. [2024-05-12 13:26:37,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24081 conditions, 3724 events. 2113/3724 cut-off events. For 181876/181876 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23680 event pairs, 619 based on Foata normal form. 2/3570 useless extension candidates. Maximal degree in co-relation 23910. Up to 3442 conditions per place. [2024-05-12 13:26:37,919 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 371 selfloop transitions, 28 changer transitions 0/406 dead transitions. [2024-05-12 13:26:37,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 406 transitions, 6369 flow [2024-05-12 13:26:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:26:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:26:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-05-12 13:26:37,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 13:26:37,920 INFO L175 Difference]: Start difference. First operand has 347 places, 375 transitions, 4959 flow. Second operand 12 states and 171 transitions. [2024-05-12 13:26:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 406 transitions, 6369 flow [2024-05-12 13:26:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 406 transitions, 6072 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:38,954 INFO L231 Difference]: Finished difference. Result has 351 places, 379 transitions, 4983 flow [2024-05-12 13:26:38,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4983, PETRI_PLACES=351, PETRI_TRANSITIONS=379} [2024-05-12 13:26:38,955 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-05-12 13:26:38,955 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 379 transitions, 4983 flow [2024-05-12 13:26:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:38,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:38,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 13:26:38,955 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:38,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash -211861130, now seen corresponding path program 6 times [2024-05-12 13:26:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831672355] [2024-05-12 13:26:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:39,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:39,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831672355] [2024-05-12 13:26:39,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831672355] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:39,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:39,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242188737] [2024-05-12 13:26:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:40,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:40,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 379 transitions, 4983 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:40,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:40,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:40,945 INFO L124 PetriNetUnfolderBase]: 2110/3719 cut-off events. [2024-05-12 13:26:40,945 INFO L125 PetriNetUnfolderBase]: For 168838/168838 co-relation queries the response was YES. [2024-05-12 13:26:40,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23395 conditions, 3719 events. 2110/3719 cut-off events. For 168838/168838 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23640 event pairs, 630 based on Foata normal form. 2/3565 useless extension candidates. Maximal degree in co-relation 23223. Up to 3484 conditions per place. [2024-05-12 13:26:40,991 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 370 selfloop transitions, 25 changer transitions 0/402 dead transitions. [2024-05-12 13:26:40,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 402 transitions, 5889 flow [2024-05-12 13:26:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:26:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:26:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 165 transitions. [2024-05-12 13:26:40,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3618421052631579 [2024-05-12 13:26:40,992 INFO L175 Difference]: Start difference. First operand has 351 places, 379 transitions, 4983 flow. Second operand 12 states and 165 transitions. [2024-05-12 13:26:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 402 transitions, 5889 flow [2024-05-12 13:26:42,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 402 transitions, 5619 flow, removed 121 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:42,005 INFO L231 Difference]: Finished difference. Result has 355 places, 379 transitions, 4771 flow [2024-05-12 13:26:42,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4713, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4771, PETRI_PLACES=355, PETRI_TRANSITIONS=379} [2024-05-12 13:26:42,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-05-12 13:26:42,006 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 379 transitions, 4771 flow [2024-05-12 13:26:42,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:42,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:42,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:42,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 13:26:42,006 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:42,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1818715153, now seen corresponding path program 19 times [2024-05-12 13:26:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:42,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410839826] [2024-05-12 13:26:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410839826] [2024-05-12 13:26:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410839826] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:42,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065059459] [2024-05-12 13:26:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:43,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 379 transitions, 4771 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:43,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:43,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:43,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:43,872 INFO L124 PetriNetUnfolderBase]: 2126/3740 cut-off events. [2024-05-12 13:26:43,872 INFO L125 PetriNetUnfolderBase]: For 166904/166904 co-relation queries the response was YES. [2024-05-12 13:26:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23307 conditions, 3740 events. 2126/3740 cut-off events. For 166904/166904 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23704 event pairs, 522 based on Foata normal form. 2/3583 useless extension candidates. Maximal degree in co-relation 23133. Up to 3055 conditions per place. [2024-05-12 13:26:43,914 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 306 selfloop transitions, 94 changer transitions 0/407 dead transitions. [2024-05-12 13:26:43,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 407 transitions, 5835 flow [2024-05-12 13:26:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 13:26:43,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-05-12 13:26:43,915 INFO L175 Difference]: Start difference. First operand has 355 places, 379 transitions, 4771 flow. Second operand 10 states and 162 transitions. [2024-05-12 13:26:43,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 407 transitions, 5835 flow [2024-05-12 13:26:44,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 407 transitions, 5780 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-05-12 13:26:44,769 INFO L231 Difference]: Finished difference. Result has 354 places, 381 transitions, 5045 flow [2024-05-12 13:26:44,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4716, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5045, PETRI_PLACES=354, PETRI_TRANSITIONS=381} [2024-05-12 13:26:44,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-05-12 13:26:44,769 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 381 transitions, 5045 flow [2024-05-12 13:26:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:44,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:44,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 13:26:44,770 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:44,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1826339789, now seen corresponding path program 4 times [2024-05-12 13:26:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708340807] [2024-05-12 13:26:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:45,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708340807] [2024-05-12 13:26:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708340807] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:26:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793462204] [2024-05-12 13:26:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:26:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:26:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:26:45,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:45,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 381 transitions, 5045 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:45,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:45,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:45,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:46,561 INFO L124 PetriNetUnfolderBase]: 2122/3733 cut-off events. [2024-05-12 13:26:46,561 INFO L125 PetriNetUnfolderBase]: For 158971/158971 co-relation queries the response was YES. [2024-05-12 13:26:46,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23380 conditions, 3733 events. 2122/3733 cut-off events. For 158971/158971 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23667 event pairs, 540 based on Foata normal form. 2/3574 useless extension candidates. Maximal degree in co-relation 23205. Up to 2862 conditions per place. [2024-05-12 13:26:46,603 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 278 selfloop transitions, 118 changer transitions 0/403 dead transitions. [2024-05-12 13:26:46,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 403 transitions, 5937 flow [2024-05-12 13:26:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 13:26:46,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:26:46,604 INFO L175 Difference]: Start difference. First operand has 354 places, 381 transitions, 5045 flow. Second operand 10 states and 160 transitions. [2024-05-12 13:26:46,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 403 transitions, 5937 flow [2024-05-12 13:26:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 403 transitions, 5610 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:47,433 INFO L231 Difference]: Finished difference. Result has 356 places, 381 transitions, 4967 flow [2024-05-12 13:26:47,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4967, PETRI_PLACES=356, PETRI_TRANSITIONS=381} [2024-05-12 13:26:47,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-05-12 13:26:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 381 transitions, 4967 flow [2024-05-12 13:26:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 13:26:47,434 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:47,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1826349430, now seen corresponding path program 7 times [2024-05-12 13:26:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:47,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199015566] [2024-05-12 13:26:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:48,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199015566] [2024-05-12 13:26:48,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199015566] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:48,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:48,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:48,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813222348] [2024-05-12 13:26:48,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:48,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:48,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:48,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:48,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 381 transitions, 4967 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:48,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:48,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:48,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:49,548 INFO L124 PetriNetUnfolderBase]: 2187/3859 cut-off events. [2024-05-12 13:26:49,548 INFO L125 PetriNetUnfolderBase]: For 218649/218649 co-relation queries the response was YES. [2024-05-12 13:26:49,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23900 conditions, 3859 events. 2187/3859 cut-off events. For 218649/218649 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 24663 event pairs, 565 based on Foata normal form. 12/3710 useless extension candidates. Maximal degree in co-relation 23724. Up to 2825 conditions per place. [2024-05-12 13:26:49,602 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 287 selfloop transitions, 120 changer transitions 0/414 dead transitions. [2024-05-12 13:26:49,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 414 transitions, 6077 flow [2024-05-12 13:26:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:26:49,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-05-12 13:26:49,603 INFO L175 Difference]: Start difference. First operand has 356 places, 381 transitions, 4967 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:26:49,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 414 transitions, 6077 flow [2024-05-12 13:26:50,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 414 transitions, 5663 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-05-12 13:26:50,403 INFO L231 Difference]: Finished difference. Result has 354 places, 383 transitions, 4940 flow [2024-05-12 13:26:50,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4940, PETRI_PLACES=354, PETRI_TRANSITIONS=383} [2024-05-12 13:26:50,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-05-12 13:26:50,404 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 383 transitions, 4940 flow [2024-05-12 13:26:50,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:50,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:50,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:50,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 13:26:50,404 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:50,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1619269213, now seen corresponding path program 20 times [2024-05-12 13:26:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:50,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990354884] [2024-05-12 13:26:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990354884] [2024-05-12 13:26:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990354884] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:51,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:26:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973264847] [2024-05-12 13:26:51,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:51,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:26:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:26:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:26:51,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:51,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 383 transitions, 4940 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:51,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:51,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:51,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:52,359 INFO L124 PetriNetUnfolderBase]: 2203/3887 cut-off events. [2024-05-12 13:26:52,359 INFO L125 PetriNetUnfolderBase]: For 158505/158505 co-relation queries the response was YES. [2024-05-12 13:26:52,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24146 conditions, 3887 events. 2203/3887 cut-off events. For 158505/158505 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24932 event pairs, 549 based on Foata normal form. 2/3737 useless extension candidates. Maximal degree in co-relation 23970. Up to 2970 conditions per place. [2024-05-12 13:26:52,404 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 290 selfloop transitions, 115 changer transitions 0/412 dead transitions. [2024-05-12 13:26:52,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 412 transitions, 6032 flow [2024-05-12 13:26:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:26:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:26:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 13:26:52,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-05-12 13:26:52,405 INFO L175 Difference]: Start difference. First operand has 354 places, 383 transitions, 4940 flow. Second operand 10 states and 162 transitions. [2024-05-12 13:26:52,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 412 transitions, 6032 flow [2024-05-12 13:26:53,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 412 transitions, 5683 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-05-12 13:26:53,192 INFO L231 Difference]: Finished difference. Result has 355 places, 385 transitions, 4968 flow [2024-05-12 13:26:53,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4591, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4968, PETRI_PLACES=355, PETRI_TRANSITIONS=385} [2024-05-12 13:26:53,192 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-05-12 13:26:53,192 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 385 transitions, 4968 flow [2024-05-12 13:26:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:53,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:53,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:53,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 13:26:53,192 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:53,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1059698223, now seen corresponding path program 21 times [2024-05-12 13:26:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513912889] [2024-05-12 13:26:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:53,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513912889] [2024-05-12 13:26:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513912889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:53,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266276359] [2024-05-12 13:26:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:53,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:54,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:54,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 385 transitions, 4968 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:54,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:54,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:54,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:55,104 INFO L124 PetriNetUnfolderBase]: 2325/4100 cut-off events. [2024-05-12 13:26:55,104 INFO L125 PetriNetUnfolderBase]: For 152003/152003 co-relation queries the response was YES. [2024-05-12 13:26:55,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25150 conditions, 4100 events. 2325/4100 cut-off events. For 152003/152003 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26602 event pairs, 635 based on Foata normal form. 2/3936 useless extension candidates. Maximal degree in co-relation 24973. Up to 3697 conditions per place. [2024-05-12 13:26:55,150 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 365 selfloop transitions, 70 changer transitions 0/442 dead transitions. [2024-05-12 13:26:55,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 442 transitions, 6485 flow [2024-05-12 13:26:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 13:26:55,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043062200956938 [2024-05-12 13:26:55,152 INFO L175 Difference]: Start difference. First operand has 355 places, 385 transitions, 4968 flow. Second operand 11 states and 169 transitions. [2024-05-12 13:26:55,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 442 transitions, 6485 flow [2024-05-12 13:26:56,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 442 transitions, 6100 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-05-12 13:26:56,105 INFO L231 Difference]: Finished difference. Result has 360 places, 409 transitions, 5285 flow [2024-05-12 13:26:56,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4607, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5285, PETRI_PLACES=360, PETRI_TRANSITIONS=409} [2024-05-12 13:26:56,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 318 predicate places. [2024-05-12 13:26:56,106 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 409 transitions, 5285 flow [2024-05-12 13:26:56,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:56,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:56,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:56,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 13:26:56,107 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:56,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash -643645617, now seen corresponding path program 22 times [2024-05-12 13:26:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193974012] [2024-05-12 13:26:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:26:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:26:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:26:56,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193974012] [2024-05-12 13:26:56,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193974012] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:26:56,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:26:56,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:26:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766834602] [2024-05-12 13:26:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:26:56,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:26:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:26:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:26:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:26:57,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:26:57,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 409 transitions, 5285 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:57,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:26:57,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:26:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:26:58,163 INFO L124 PetriNetUnfolderBase]: 2377/4191 cut-off events. [2024-05-12 13:26:58,163 INFO L125 PetriNetUnfolderBase]: For 155772/155772 co-relation queries the response was YES. [2024-05-12 13:26:58,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25493 conditions, 4191 events. 2377/4191 cut-off events. For 155772/155772 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 27341 event pairs, 651 based on Foata normal form. 2/4029 useless extension candidates. Maximal degree in co-relation 25313. Up to 3651 conditions per place. [2024-05-12 13:26:58,219 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 369 selfloop transitions, 76 changer transitions 0/452 dead transitions. [2024-05-12 13:26:58,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 452 transitions, 6546 flow [2024-05-12 13:26:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:26:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:26:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:26:58,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-05-12 13:26:58,220 INFO L175 Difference]: Start difference. First operand has 360 places, 409 transitions, 5285 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:26:58,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 452 transitions, 6546 flow [2024-05-12 13:26:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 452 transitions, 6312 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-05-12 13:26:59,188 INFO L231 Difference]: Finished difference. Result has 365 places, 417 transitions, 5414 flow [2024-05-12 13:26:59,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5414, PETRI_PLACES=365, PETRI_TRANSITIONS=417} [2024-05-12 13:26:59,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-05-12 13:26:59,188 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 417 transitions, 5414 flow [2024-05-12 13:26:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:26:59,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:26:59,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:26:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 13:26:59,189 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:26:59,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:26:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1467112965, now seen corresponding path program 23 times [2024-05-12 13:26:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:26:59,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110208554] [2024-05-12 13:26:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:26:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:26:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:00,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110208554] [2024-05-12 13:27:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110208554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:27:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927013697] [2024-05-12 13:27:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:27:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:27:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:27:00,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:00,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 417 transitions, 5414 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:00,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:00,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:00,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:01,324 INFO L124 PetriNetUnfolderBase]: 2516/4438 cut-off events. [2024-05-12 13:27:01,324 INFO L125 PetriNetUnfolderBase]: For 168220/168220 co-relation queries the response was YES. [2024-05-12 13:27:01,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27556 conditions, 4438 events. 2516/4438 cut-off events. For 168220/168220 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29403 event pairs, 708 based on Foata normal form. 2/4266 useless extension candidates. Maximal degree in co-relation 27374. Up to 3824 conditions per place. [2024-05-12 13:27:01,382 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 391 selfloop transitions, 90 changer transitions 0/488 dead transitions. [2024-05-12 13:27:01,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 488 transitions, 7689 flow [2024-05-12 13:27:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 13:27:01,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-05-12 13:27:01,384 INFO L175 Difference]: Start difference. First operand has 365 places, 417 transitions, 5414 flow. Second operand 11 states and 175 transitions. [2024-05-12 13:27:01,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 488 transitions, 7689 flow [2024-05-12 13:27:02,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 488 transitions, 7261 flow, removed 138 selfloop flow, removed 7 redundant places. [2024-05-12 13:27:02,356 INFO L231 Difference]: Finished difference. Result has 372 places, 451 transitions, 6194 flow [2024-05-12 13:27:02,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6194, PETRI_PLACES=372, PETRI_TRANSITIONS=451} [2024-05-12 13:27:02,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-05-12 13:27:02,357 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 451 transitions, 6194 flow [2024-05-12 13:27:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:02,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:02,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:02,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 13:27:02,357 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:02,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1109654775, now seen corresponding path program 24 times [2024-05-12 13:27:02,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:02,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377909309] [2024-05-12 13:27:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:02,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377909309] [2024-05-12 13:27:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377909309] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:03,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:27:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769429979] [2024-05-12 13:27:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:27:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:27:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:27:03,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:03,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 451 transitions, 6194 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:03,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:03,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:03,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:04,606 INFO L124 PetriNetUnfolderBase]: 2513/4433 cut-off events. [2024-05-12 13:27:04,606 INFO L125 PetriNetUnfolderBase]: For 150231/150231 co-relation queries the response was YES. [2024-05-12 13:27:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27177 conditions, 4433 events. 2513/4433 cut-off events. For 150231/150231 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29347 event pairs, 723 based on Foata normal form. 2/4258 useless extension candidates. Maximal degree in co-relation 26991. Up to 3984 conditions per place. [2024-05-12 13:27:04,660 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 397 selfloop transitions, 81 changer transitions 0/485 dead transitions. [2024-05-12 13:27:04,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 485 transitions, 7340 flow [2024-05-12 13:27:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:27:04,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-05-12 13:27:04,661 INFO L175 Difference]: Start difference. First operand has 372 places, 451 transitions, 6194 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:27:04,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 485 transitions, 7340 flow [2024-05-12 13:27:05,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 485 transitions, 7002 flow, removed 132 selfloop flow, removed 7 redundant places. [2024-05-12 13:27:05,637 INFO L231 Difference]: Finished difference. Result has 377 places, 453 transitions, 6077 flow [2024-05-12 13:27:05,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5856, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6077, PETRI_PLACES=377, PETRI_TRANSITIONS=453} [2024-05-12 13:27:05,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-05-12 13:27:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 453 transitions, 6077 flow [2024-05-12 13:27:05,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:05,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:05,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:05,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 13:27:05,637 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:05,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash -334558778, now seen corresponding path program 1 times [2024-05-12 13:27:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338326041] [2024-05-12 13:27:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:06,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338326041] [2024-05-12 13:27:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338326041] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:06,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615536712] [2024-05-12 13:27:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:06,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:06,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 453 transitions, 6077 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:06,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:06,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:06,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:07,835 INFO L124 PetriNetUnfolderBase]: 2529/4461 cut-off events. [2024-05-12 13:27:07,835 INFO L125 PetriNetUnfolderBase]: For 142871/142871 co-relation queries the response was YES. [2024-05-12 13:27:07,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27111 conditions, 4461 events. 2529/4461 cut-off events. For 142871/142871 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29553 event pairs, 652 based on Foata normal form. 2/4318 useless extension candidates. Maximal degree in co-relation 26922. Up to 3802 conditions per place. [2024-05-12 13:27:07,892 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 407 selfloop transitions, 77 changer transitions 0/491 dead transitions. [2024-05-12 13:27:07,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 491 transitions, 7355 flow [2024-05-12 13:27:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 13:27:07,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-05-12 13:27:07,893 INFO L175 Difference]: Start difference. First operand has 377 places, 453 transitions, 6077 flow. Second operand 11 states and 171 transitions. [2024-05-12 13:27:07,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 491 transitions, 7355 flow [2024-05-12 13:27:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 491 transitions, 7169 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:08,903 INFO L231 Difference]: Finished difference. Result has 379 places, 455 transitions, 6178 flow [2024-05-12 13:27:08,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5891, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6178, PETRI_PLACES=379, PETRI_TRANSITIONS=455} [2024-05-12 13:27:08,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-05-12 13:27:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 455 transitions, 6178 flow [2024-05-12 13:27:08,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:08,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:08,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-05-12 13:27:08,904 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1498481452, now seen corresponding path program 2 times [2024-05-12 13:27:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464312943] [2024-05-12 13:27:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:09,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464312943] [2024-05-12 13:27:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464312943] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:09,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:09,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647399212] [2024-05-12 13:27:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:09,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:09,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 455 transitions, 6178 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:09,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:09,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:11,131 INFO L124 PetriNetUnfolderBase]: 2564/4526 cut-off events. [2024-05-12 13:27:11,131 INFO L125 PetriNetUnfolderBase]: For 164797/164797 co-relation queries the response was YES. [2024-05-12 13:27:11,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28079 conditions, 4526 events. 2564/4526 cut-off events. For 164797/164797 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30183 event pairs, 699 based on Foata normal form. 2/4358 useless extension candidates. Maximal degree in co-relation 27889. Up to 3576 conditions per place. [2024-05-12 13:27:11,189 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 369 selfloop transitions, 117 changer transitions 0/493 dead transitions. [2024-05-12 13:27:11,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 493 transitions, 7810 flow [2024-05-12 13:27:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:27:11,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-05-12 13:27:11,190 INFO L175 Difference]: Start difference. First operand has 379 places, 455 transitions, 6178 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:27:11,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 493 transitions, 7810 flow [2024-05-12 13:27:12,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 493 transitions, 7539 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:12,528 INFO L231 Difference]: Finished difference. Result has 381 places, 459 transitions, 6411 flow [2024-05-12 13:27:12,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6411, PETRI_PLACES=381, PETRI_TRANSITIONS=459} [2024-05-12 13:27:12,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-05-12 13:27:12,528 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 459 transitions, 6411 flow [2024-05-12 13:27:12,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:12,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:12,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:12,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-05-12 13:27:12,529 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:12,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -562643584, now seen corresponding path program 3 times [2024-05-12 13:27:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711684171] [2024-05-12 13:27:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711684171] [2024-05-12 13:27:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711684171] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:13,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016978679] [2024-05-12 13:27:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:13,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:13,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 459 transitions, 6411 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:13,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:13,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:13,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:14,958 INFO L124 PetriNetUnfolderBase]: 2580/4556 cut-off events. [2024-05-12 13:27:14,959 INFO L125 PetriNetUnfolderBase]: For 170469/170469 co-relation queries the response was YES. [2024-05-12 13:27:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28373 conditions, 4556 events. 2580/4556 cut-off events. For 170469/170469 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 30406 event pairs, 781 based on Foata normal form. 2/4378 useless extension candidates. Maximal degree in co-relation 28182. Up to 4071 conditions per place. [2024-05-12 13:27:15,009 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 384 selfloop transitions, 99 changer transitions 0/490 dead transitions. [2024-05-12 13:27:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 490 transitions, 7643 flow [2024-05-12 13:27:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 13:27:15,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-05-12 13:27:15,010 INFO L175 Difference]: Start difference. First operand has 381 places, 459 transitions, 6411 flow. Second operand 11 states and 164 transitions. [2024-05-12 13:27:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 490 transitions, 7643 flow [2024-05-12 13:27:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 490 transitions, 7343 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-05-12 13:27:16,033 INFO L231 Difference]: Finished difference. Result has 385 places, 461 transitions, 6451 flow [2024-05-12 13:27:16,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6451, PETRI_PLACES=385, PETRI_TRANSITIONS=461} [2024-05-12 13:27:16,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-05-12 13:27:16,033 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 461 transitions, 6451 flow [2024-05-12 13:27:16,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:16,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:16,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-05-12 13:27:16,034 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:16,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash -567291724, now seen corresponding path program 4 times [2024-05-12 13:27:16,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:16,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241456220] [2024-05-12 13:27:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:16,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241456220] [2024-05-12 13:27:16,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241456220] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:16,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:16,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254190839] [2024-05-12 13:27:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:17,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:17,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 461 transitions, 6451 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:17,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:17,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:17,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:18,362 INFO L124 PetriNetUnfolderBase]: 2596/4582 cut-off events. [2024-05-12 13:27:18,362 INFO L125 PetriNetUnfolderBase]: For 170217/170217 co-relation queries the response was YES. [2024-05-12 13:27:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28601 conditions, 4582 events. 2596/4582 cut-off events. For 170217/170217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30668 event pairs, 676 based on Foata normal form. 2/4418 useless extension candidates. Maximal degree in co-relation 28408. Up to 3190 conditions per place. [2024-05-12 13:27:18,417 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 359 selfloop transitions, 133 changer transitions 0/499 dead transitions. [2024-05-12 13:27:18,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 499 transitions, 7991 flow [2024-05-12 13:27:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 13:27:18,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-05-12 13:27:18,420 INFO L175 Difference]: Start difference. First operand has 385 places, 461 transitions, 6451 flow. Second operand 11 states and 177 transitions. [2024-05-12 13:27:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 499 transitions, 7991 flow [2024-05-12 13:27:19,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 499 transitions, 7695 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:19,489 INFO L231 Difference]: Finished difference. Result has 387 places, 463 transitions, 6567 flow [2024-05-12 13:27:19,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6155, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6567, PETRI_PLACES=387, PETRI_TRANSITIONS=463} [2024-05-12 13:27:19,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-05-12 13:27:19,490 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 463 transitions, 6567 flow [2024-05-12 13:27:19,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:19,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:19,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:19,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-05-12 13:27:19,491 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:19,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash -230392902, now seen corresponding path program 5 times [2024-05-12 13:27:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616438581] [2024-05-12 13:27:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:20,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616438581] [2024-05-12 13:27:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616438581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:20,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:20,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249580958] [2024-05-12 13:27:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:20,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:20,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 463 transitions, 6567 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:20,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:20,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:20,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:21,872 INFO L124 PetriNetUnfolderBase]: 2593/4579 cut-off events. [2024-05-12 13:27:21,872 INFO L125 PetriNetUnfolderBase]: For 158407/158407 co-relation queries the response was YES. [2024-05-12 13:27:21,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28422 conditions, 4579 events. 2593/4579 cut-off events. For 158407/158407 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30630 event pairs, 772 based on Foata normal form. 2/4405 useless extension candidates. Maximal degree in co-relation 28228. Up to 3918 conditions per place. [2024-05-12 13:27:21,930 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 386 selfloop transitions, 101 changer transitions 0/494 dead transitions. [2024-05-12 13:27:21,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 494 transitions, 7691 flow [2024-05-12 13:27:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-05-12 13:27:21,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-05-12 13:27:21,932 INFO L175 Difference]: Start difference. First operand has 387 places, 463 transitions, 6567 flow. Second operand 11 states and 168 transitions. [2024-05-12 13:27:21,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 494 transitions, 7691 flow [2024-05-12 13:27:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 494 transitions, 7209 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:22,858 INFO L231 Difference]: Finished difference. Result has 389 places, 463 transitions, 6297 flow [2024-05-12 13:27:22,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6085, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6297, PETRI_PLACES=389, PETRI_TRANSITIONS=463} [2024-05-12 13:27:22,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-05-12 13:27:22,858 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 463 transitions, 6297 flow [2024-05-12 13:27:22,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:22,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:22,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-05-12 13:27:22,859 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779248, now seen corresponding path program 6 times [2024-05-12 13:27:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:22,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878123995] [2024-05-12 13:27:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878123995] [2024-05-12 13:27:23,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878123995] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019744604] [2024-05-12 13:27:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:23,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:23,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:23,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 463 transitions, 6297 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:23,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:23,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:23,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:25,256 INFO L124 PetriNetUnfolderBase]: 2609/4604 cut-off events. [2024-05-12 13:27:25,256 INFO L125 PetriNetUnfolderBase]: For 157117/157117 co-relation queries the response was YES. [2024-05-12 13:27:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28291 conditions, 4604 events. 2609/4604 cut-off events. For 157117/157117 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 30766 event pairs, 785 based on Foata normal form. 2/4422 useless extension candidates. Maximal degree in co-relation 28096. Up to 3929 conditions per place. [2024-05-12 13:27:25,315 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 393 selfloop transitions, 93 changer transitions 0/493 dead transitions. [2024-05-12 13:27:25,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 493 transitions, 7537 flow [2024-05-12 13:27:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 13:27:25,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-05-12 13:27:25,316 INFO L175 Difference]: Start difference. First operand has 389 places, 463 transitions, 6297 flow. Second operand 11 states and 172 transitions. [2024-05-12 13:27:25,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 493 transitions, 7537 flow [2024-05-12 13:27:26,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 493 transitions, 7285 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 13:27:26,378 INFO L231 Difference]: Finished difference. Result has 390 places, 465 transitions, 6376 flow [2024-05-12 13:27:26,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6045, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6376, PETRI_PLACES=390, PETRI_TRANSITIONS=465} [2024-05-12 13:27:26,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-05-12 13:27:26,378 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 465 transitions, 6376 flow [2024-05-12 13:27:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:26,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-05-12 13:27:26,379 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:26,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -710272224, now seen corresponding path program 7 times [2024-05-12 13:27:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192370202] [2024-05-12 13:27:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192370202] [2024-05-12 13:27:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192370202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:27,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463735987] [2024-05-12 13:27:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:27,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:27,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 465 transitions, 6376 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:27,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:27,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:28,766 INFO L124 PetriNetUnfolderBase]: 2625/4633 cut-off events. [2024-05-12 13:27:28,766 INFO L125 PetriNetUnfolderBase]: For 163854/163854 co-relation queries the response was YES. [2024-05-12 13:27:28,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28595 conditions, 4633 events. 2625/4633 cut-off events. For 163854/163854 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31020 event pairs, 777 based on Foata normal form. 2/4452 useless extension candidates. Maximal degree in co-relation 28399. Up to 3913 conditions per place. [2024-05-12 13:27:28,820 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 394 selfloop transitions, 96 changer transitions 0/497 dead transitions. [2024-05-12 13:27:28,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 497 transitions, 7644 flow [2024-05-12 13:27:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 13:27:28,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:27:28,821 INFO L175 Difference]: Start difference. First operand has 390 places, 465 transitions, 6376 flow. Second operand 11 states and 176 transitions. [2024-05-12 13:27:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 497 transitions, 7644 flow [2024-05-12 13:27:29,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 497 transitions, 7329 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:29,872 INFO L231 Difference]: Finished difference. Result has 392 places, 467 transitions, 6402 flow [2024-05-12 13:27:29,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6061, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6402, PETRI_PLACES=392, PETRI_TRANSITIONS=467} [2024-05-12 13:27:29,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-05-12 13:27:29,872 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 467 transitions, 6402 flow [2024-05-12 13:27:29,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:29,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:29,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-05-12 13:27:29,873 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:29,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash -710445204, now seen corresponding path program 8 times [2024-05-12 13:27:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810904415] [2024-05-12 13:27:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:29,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:30,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810904415] [2024-05-12 13:27:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810904415] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413130666] [2024-05-12 13:27:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:30,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:30,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 467 transitions, 6402 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:30,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:30,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:30,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:32,250 INFO L124 PetriNetUnfolderBase]: 2641/4661 cut-off events. [2024-05-12 13:27:32,251 INFO L125 PetriNetUnfolderBase]: For 167050/167050 co-relation queries the response was YES. [2024-05-12 13:27:32,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28788 conditions, 4661 events. 2641/4661 cut-off events. For 167050/167050 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 31280 event pairs, 777 based on Foata normal form. 2/4481 useless extension candidates. Maximal degree in co-relation 28591. Up to 3871 conditions per place. [2024-05-12 13:27:32,307 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 394 selfloop transitions, 100 changer transitions 0/501 dead transitions. [2024-05-12 13:27:32,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 501 transitions, 7698 flow [2024-05-12 13:27:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-05-12 13:27:32,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-05-12 13:27:32,308 INFO L175 Difference]: Start difference. First operand has 392 places, 467 transitions, 6402 flow. Second operand 11 states and 180 transitions. [2024-05-12 13:27:32,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 501 transitions, 7698 flow [2024-05-12 13:27:33,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 501 transitions, 7373 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:33,435 INFO L231 Difference]: Finished difference. Result has 394 places, 469 transitions, 6430 flow [2024-05-12 13:27:33,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6077, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6430, PETRI_PLACES=394, PETRI_TRANSITIONS=469} [2024-05-12 13:27:33,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-05-12 13:27:33,435 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 469 transitions, 6430 flow [2024-05-12 13:27:33,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:33,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:33,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:33,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-05-12 13:27:33,436 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:33,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -714913854, now seen corresponding path program 9 times [2024-05-12 13:27:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171850590] [2024-05-12 13:27:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171850590] [2024-05-12 13:27:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171850590] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:27:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294775602] [2024-05-12 13:27:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:27:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:27:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:27:34,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:34,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 469 transitions, 6430 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:34,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:34,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:34,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:35,675 INFO L124 PetriNetUnfolderBase]: 2757/4876 cut-off events. [2024-05-12 13:27:35,675 INFO L125 PetriNetUnfolderBase]: For 284970/284970 co-relation queries the response was YES. [2024-05-12 13:27:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32045 conditions, 4876 events. 2757/4876 cut-off events. For 284970/284970 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 33153 event pairs, 836 based on Foata normal form. 2/4699 useless extension candidates. Maximal degree in co-relation 31847. Up to 3689 conditions per place. [2024-05-12 13:27:35,731 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 394 selfloop transitions, 111 changer transitions 0/512 dead transitions. [2024-05-12 13:27:35,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 512 transitions, 8200 flow [2024-05-12 13:27:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-05-12 13:27:35,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-05-12 13:27:35,732 INFO L175 Difference]: Start difference. First operand has 394 places, 469 transitions, 6430 flow. Second operand 11 states and 186 transitions. [2024-05-12 13:27:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 512 transitions, 8200 flow [2024-05-12 13:27:37,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 512 transitions, 7863 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:37,430 INFO L231 Difference]: Finished difference. Result has 396 places, 473 transitions, 6620 flow [2024-05-12 13:27:37,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6620, PETRI_PLACES=396, PETRI_TRANSITIONS=473} [2024-05-12 13:27:37,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 354 predicate places. [2024-05-12 13:27:37,431 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 473 transitions, 6620 flow [2024-05-12 13:27:37,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:37,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:37,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:37,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-05-12 13:27:37,431 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:37,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1173122480, now seen corresponding path program 10 times [2024-05-12 13:27:37,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:37,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406820711] [2024-05-12 13:27:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:37,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406820711] [2024-05-12 13:27:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406820711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090062765] [2024-05-12 13:27:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:38,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:38,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 473 transitions, 6620 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:38,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:38,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:39,884 INFO L124 PetriNetUnfolderBase]: 2773/4904 cut-off events. [2024-05-12 13:27:39,884 INFO L125 PetriNetUnfolderBase]: For 291197/291197 co-relation queries the response was YES. [2024-05-12 13:27:39,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32296 conditions, 4904 events. 2773/4904 cut-off events. For 291197/291197 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 33372 event pairs, 836 based on Foata normal form. 2/4717 useless extension candidates. Maximal degree in co-relation 32097. Up to 4225 conditions per place. [2024-05-12 13:27:39,945 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 392 selfloop transitions, 104 changer transitions 0/503 dead transitions. [2024-05-12 13:27:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 503 transitions, 7896 flow [2024-05-12 13:27:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 13:27:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-05-12 13:27:39,946 INFO L175 Difference]: Start difference. First operand has 396 places, 473 transitions, 6620 flow. Second operand 11 states and 171 transitions. [2024-05-12 13:27:39,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 503 transitions, 7896 flow [2024-05-12 13:27:41,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 503 transitions, 7595 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-05-12 13:27:41,491 INFO L231 Difference]: Finished difference. Result has 400 places, 475 transitions, 6688 flow [2024-05-12 13:27:41,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6337, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6688, PETRI_PLACES=400, PETRI_TRANSITIONS=475} [2024-05-12 13:27:41,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-05-12 13:27:41,491 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 475 transitions, 6688 flow [2024-05-12 13:27:41,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:41,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:41,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:41,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-05-12 13:27:41,491 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:41,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1409297840, now seen corresponding path program 11 times [2024-05-12 13:27:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067158869] [2024-05-12 13:27:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067158869] [2024-05-12 13:27:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067158869] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:42,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:42,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:27:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146233421] [2024-05-12 13:27:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:27:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:27:42,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:27:42,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:42,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 475 transitions, 6688 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:42,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:42,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:42,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:43,738 INFO L124 PetriNetUnfolderBase]: 2776/4910 cut-off events. [2024-05-12 13:27:43,738 INFO L125 PetriNetUnfolderBase]: For 289266/289266 co-relation queries the response was YES. [2024-05-12 13:27:43,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31166 conditions, 4910 events. 2776/4910 cut-off events. For 289266/289266 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 33421 event pairs, 824 based on Foata normal form. 12/4735 useless extension candidates. Maximal degree in co-relation 30965. Up to 4100 conditions per place. [2024-05-12 13:27:43,805 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 119 changer transitions 0/509 dead transitions. [2024-05-12 13:27:43,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 509 transitions, 7994 flow [2024-05-12 13:27:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:27:43,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-05-12 13:27:43,807 INFO L175 Difference]: Start difference. First operand has 400 places, 475 transitions, 6688 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:27:43,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 509 transitions, 7994 flow [2024-05-12 13:27:45,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 509 transitions, 7663 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:45,239 INFO L231 Difference]: Finished difference. Result has 402 places, 477 transitions, 6744 flow [2024-05-12 13:27:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6357, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6744, PETRI_PLACES=402, PETRI_TRANSITIONS=477} [2024-05-12 13:27:45,239 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-05-12 13:27:45,239 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 477 transitions, 6744 flow [2024-05-12 13:27:45,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-05-12 13:27:45,240 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1549066266, now seen corresponding path program 12 times [2024-05-12 13:27:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834477979] [2024-05-12 13:27:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834477979] [2024-05-12 13:27:46,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834477979] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:46,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:46,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:46,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228300035] [2024-05-12 13:27:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:46,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:46,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 477 transitions, 6744 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:46,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:46,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:47,714 INFO L124 PetriNetUnfolderBase]: 2792/4939 cut-off events. [2024-05-12 13:27:47,714 INFO L125 PetriNetUnfolderBase]: For 212424/212424 co-relation queries the response was YES. [2024-05-12 13:27:47,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31433 conditions, 4939 events. 2792/4939 cut-off events. For 212424/212424 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 33702 event pairs, 831 based on Foata normal form. 2/4753 useless extension candidates. Maximal degree in co-relation 31231. Up to 4269 conditions per place. [2024-05-12 13:27:47,776 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 396 selfloop transitions, 106 changer transitions 0/509 dead transitions. [2024-05-12 13:27:47,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 509 transitions, 8038 flow [2024-05-12 13:27:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:27:47,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-05-12 13:27:47,778 INFO L175 Difference]: Start difference. First operand has 402 places, 477 transitions, 6744 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:27:47,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 509 transitions, 8038 flow [2024-05-12 13:27:49,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 509 transitions, 7689 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-05-12 13:27:49,116 INFO L231 Difference]: Finished difference. Result has 404 places, 479 transitions, 6758 flow [2024-05-12 13:27:49,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6395, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6758, PETRI_PLACES=404, PETRI_TRANSITIONS=479} [2024-05-12 13:27:49,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-05-12 13:27:49,120 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 479 transitions, 6758 flow [2024-05-12 13:27:49,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:49,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:49,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-05-12 13:27:49,121 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1312576938, now seen corresponding path program 1 times [2024-05-12 13:27:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979483473] [2024-05-12 13:27:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979483473] [2024-05-12 13:27:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979483473] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:49,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:27:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356956038] [2024-05-12 13:27:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:49,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:27:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:27:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:27:49,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:49,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 479 transitions, 6758 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:49,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:49,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:49,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:51,389 INFO L124 PetriNetUnfolderBase]: 2906/5157 cut-off events. [2024-05-12 13:27:51,390 INFO L125 PetriNetUnfolderBase]: For 341543/341543 co-relation queries the response was YES. [2024-05-12 13:27:51,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33643 conditions, 5157 events. 2906/5157 cut-off events. For 341543/341543 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 35580 event pairs, 871 based on Foata normal form. 8/4982 useless extension candidates. Maximal degree in co-relation 33440. Up to 3874 conditions per place. [2024-05-12 13:27:51,455 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 391 selfloop transitions, 123 changer transitions 0/521 dead transitions. [2024-05-12 13:27:51,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 521 transitions, 8638 flow [2024-05-12 13:27:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-05-12 13:27:51,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-05-12 13:27:51,456 INFO L175 Difference]: Start difference. First operand has 404 places, 479 transitions, 6758 flow. Second operand 11 states and 178 transitions. [2024-05-12 13:27:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 521 transitions, 8638 flow [2024-05-12 13:27:53,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 521 transitions, 8305 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-05-12 13:27:53,094 INFO L231 Difference]: Finished difference. Result has 408 places, 482 transitions, 7051 flow [2024-05-12 13:27:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7051, PETRI_PLACES=408, PETRI_TRANSITIONS=482} [2024-05-12 13:27:53,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-05-12 13:27:53,094 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 482 transitions, 7051 flow [2024-05-12 13:27:53,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:53,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:53,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-05-12 13:27:53,095 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:53,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1401023630, now seen corresponding path program 13 times [2024-05-12 13:27:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515168444] [2024-05-12 13:27:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515168444] [2024-05-12 13:27:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515168444] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:54,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493180421] [2024-05-12 13:27:54,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:54,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:54,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:54,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 482 transitions, 7051 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:54,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:54,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:54,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:55,543 INFO L124 PetriNetUnfolderBase]: 2903/5151 cut-off events. [2024-05-12 13:27:55,543 INFO L125 PetriNetUnfolderBase]: For 276564/276564 co-relation queries the response was YES. [2024-05-12 13:27:55,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33301 conditions, 5151 events. 2903/5151 cut-off events. For 276564/276564 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35576 event pairs, 921 based on Foata normal form. 2/4963 useless extension candidates. Maximal degree in co-relation 33096. Up to 4471 conditions per place. [2024-05-12 13:27:55,609 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 398 selfloop transitions, 106 changer transitions 0/511 dead transitions. [2024-05-12 13:27:55,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 511 transitions, 8223 flow [2024-05-12 13:27:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:27:55,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-05-12 13:27:55,610 INFO L175 Difference]: Start difference. First operand has 408 places, 482 transitions, 7051 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:27:55,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 511 transitions, 8223 flow [2024-05-12 13:27:57,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 511 transitions, 7932 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-05-12 13:27:57,183 INFO L231 Difference]: Finished difference. Result has 412 places, 483 transitions, 7011 flow [2024-05-12 13:27:57,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6760, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7011, PETRI_PLACES=412, PETRI_TRANSITIONS=483} [2024-05-12 13:27:57,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-05-12 13:27:57,184 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 483 transitions, 7011 flow [2024-05-12 13:27:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:57,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:57,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-05-12 13:27:57,184 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:27:57,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1321165116, now seen corresponding path program 14 times [2024-05-12 13:27:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:57,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391897076] [2024-05-12 13:27:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391897076] [2024-05-12 13:27:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391897076] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:58,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:27:58,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509333511] [2024-05-12 13:27:58,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:58,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:27:58,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:58,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:27:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:27:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:27:58,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 483 transitions, 7011 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:58,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:58,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:27:58,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:59,849 INFO L124 PetriNetUnfolderBase]: 2919/5180 cut-off events. [2024-05-12 13:27:59,850 INFO L125 PetriNetUnfolderBase]: For 268471/268471 co-relation queries the response was YES. [2024-05-12 13:27:59,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33459 conditions, 5180 events. 2919/5180 cut-off events. For 268471/268471 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35822 event pairs, 916 based on Foata normal form. 2/4996 useless extension candidates. Maximal degree in co-relation 33252. Up to 4307 conditions per place. [2024-05-12 13:27:59,925 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 401 selfloop transitions, 111 changer transitions 0/519 dead transitions. [2024-05-12 13:27:59,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 519 transitions, 8365 flow [2024-05-12 13:27:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:27:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:27:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 13:27:59,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-05-12 13:27:59,926 INFO L175 Difference]: Start difference. First operand has 412 places, 483 transitions, 7011 flow. Second operand 11 states and 177 transitions. [2024-05-12 13:27:59,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 519 transitions, 8365 flow [2024-05-12 13:28:01,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 519 transitions, 8022 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:01,794 INFO L231 Difference]: Finished difference. Result has 414 places, 485 transitions, 7049 flow [2024-05-12 13:28:01,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6668, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7049, PETRI_PLACES=414, PETRI_TRANSITIONS=485} [2024-05-12 13:28:01,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-05-12 13:28:01,794 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 485 transitions, 7049 flow [2024-05-12 13:28:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:01,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:01,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-05-12 13:28:01,795 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1172942990, now seen corresponding path program 15 times [2024-05-12 13:28:01,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329483589] [2024-05-12 13:28:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:02,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329483589] [2024-05-12 13:28:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329483589] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683535749] [2024-05-12 13:28:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:02,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:02,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:02,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:02,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 485 transitions, 7049 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:02,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:02,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:04,309 INFO L124 PetriNetUnfolderBase]: 2916/5175 cut-off events. [2024-05-12 13:28:04,309 INFO L125 PetriNetUnfolderBase]: For 250165/250165 co-relation queries the response was YES. [2024-05-12 13:28:04,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32978 conditions, 5175 events. 2916/5175 cut-off events. For 250165/250165 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 35805 event pairs, 911 based on Foata normal form. 2/4994 useless extension candidates. Maximal degree in co-relation 32770. Up to 4170 conditions per place. [2024-05-12 13:28:04,364 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 396 selfloop transitions, 118 changer transitions 0/521 dead transitions. [2024-05-12 13:28:04,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 521 transitions, 8273 flow [2024-05-12 13:28:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:28:04,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-05-12 13:28:04,365 INFO L175 Difference]: Start difference. First operand has 414 places, 485 transitions, 7049 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:28:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 521 transitions, 8273 flow [2024-05-12 13:28:06,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 521 transitions, 7824 flow, removed 115 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:06,557 INFO L231 Difference]: Finished difference. Result has 416 places, 485 transitions, 6841 flow [2024-05-12 13:28:06,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6600, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6841, PETRI_PLACES=416, PETRI_TRANSITIONS=485} [2024-05-12 13:28:06,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-05-12 13:28:06,557 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 485 transitions, 6841 flow [2024-05-12 13:28:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:06,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:06,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-05-12 13:28:06,557 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:06,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -191638492, now seen corresponding path program 16 times [2024-05-12 13:28:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360376576] [2024-05-12 13:28:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:07,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:07,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360376576] [2024-05-12 13:28:07,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360376576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:07,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:07,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:07,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82243634] [2024-05-12 13:28:07,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:07,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:07,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:07,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 485 transitions, 6841 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:07,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:07,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:09,111 INFO L124 PetriNetUnfolderBase]: 2932/5205 cut-off events. [2024-05-12 13:28:09,111 INFO L125 PetriNetUnfolderBase]: For 249115/249115 co-relation queries the response was YES. [2024-05-12 13:28:09,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32960 conditions, 5205 events. 2932/5205 cut-off events. For 249115/249115 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 36045 event pairs, 884 based on Foata normal form. 2/5014 useless extension candidates. Maximal degree in co-relation 32751. Up to 4047 conditions per place. [2024-05-12 13:28:09,174 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 343 selfloop transitions, 164 changer transitions 0/514 dead transitions. [2024-05-12 13:28:09,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 514 transitions, 8139 flow [2024-05-12 13:28:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 13:28:09,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:28:09,176 INFO L175 Difference]: Start difference. First operand has 416 places, 485 transitions, 6841 flow. Second operand 11 states and 176 transitions. [2024-05-12 13:28:09,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 514 transitions, 8139 flow [2024-05-12 13:28:11,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 514 transitions, 7791 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-05-12 13:28:11,249 INFO L231 Difference]: Finished difference. Result has 416 places, 487 transitions, 6984 flow [2024-05-12 13:28:11,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6493, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6984, PETRI_PLACES=416, PETRI_TRANSITIONS=487} [2024-05-12 13:28:11,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-05-12 13:28:11,250 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 487 transitions, 6984 flow [2024-05-12 13:28:11,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:11,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:11,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:11,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-05-12 13:28:11,250 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1205643428, now seen corresponding path program 17 times [2024-05-12 13:28:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522079032] [2024-05-12 13:28:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522079032] [2024-05-12 13:28:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522079032] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570197468] [2024-05-12 13:28:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:12,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:12,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 487 transitions, 6984 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:12,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:12,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:12,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:13,816 INFO L124 PetriNetUnfolderBase]: 2948/5233 cut-off events. [2024-05-12 13:28:13,817 INFO L125 PetriNetUnfolderBase]: For 257116/257116 co-relation queries the response was YES. [2024-05-12 13:28:13,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33369 conditions, 5233 events. 2948/5233 cut-off events. For 257116/257116 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36286 event pairs, 878 based on Foata normal form. 2/5043 useless extension candidates. Maximal degree in co-relation 33160. Up to 4031 conditions per place. [2024-05-12 13:28:13,882 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 344 selfloop transitions, 167 changer transitions 0/518 dead transitions. [2024-05-12 13:28:13,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 518 transitions, 8310 flow [2024-05-12 13:28:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-05-12 13:28:13,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-05-12 13:28:13,883 INFO L175 Difference]: Start difference. First operand has 416 places, 487 transitions, 6984 flow. Second operand 11 states and 180 transitions. [2024-05-12 13:28:13,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 518 transitions, 8310 flow [2024-05-12 13:28:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 518 transitions, 7835 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:16,019 INFO L231 Difference]: Finished difference. Result has 418 places, 489 transitions, 7010 flow [2024-05-12 13:28:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6509, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7010, PETRI_PLACES=418, PETRI_TRANSITIONS=489} [2024-05-12 13:28:16,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-05-12 13:28:16,020 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 489 transitions, 7010 flow [2024-05-12 13:28:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:16,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:16,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-05-12 13:28:16,020 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:16,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1337612082, now seen corresponding path program 18 times [2024-05-12 13:28:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657180905] [2024-05-12 13:28:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:16,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657180905] [2024-05-12 13:28:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657180905] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226960696] [2024-05-12 13:28:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:16,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:17,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:17,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 489 transitions, 7010 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:17,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:17,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:17,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:18,555 INFO L124 PetriNetUnfolderBase]: 2964/5262 cut-off events. [2024-05-12 13:28:18,555 INFO L125 PetriNetUnfolderBase]: For 261791/261791 co-relation queries the response was YES. [2024-05-12 13:28:18,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33570 conditions, 5262 events. 2964/5262 cut-off events. For 261791/261791 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36520 event pairs, 929 based on Foata normal form. 2/5070 useless extension candidates. Maximal degree in co-relation 33360. Up to 4103 conditions per place. [2024-05-12 13:28:18,628 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 353 selfloop transitions, 158 changer transitions 0/518 dead transitions. [2024-05-12 13:28:18,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 518 transitions, 8324 flow [2024-05-12 13:28:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 13:28:18,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-05-12 13:28:18,629 INFO L175 Difference]: Start difference. First operand has 418 places, 489 transitions, 7010 flow. Second operand 11 states and 177 transitions. [2024-05-12 13:28:18,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 518 transitions, 8324 flow [2024-05-12 13:28:20,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 518 transitions, 7839 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:20,972 INFO L231 Difference]: Finished difference. Result has 420 places, 491 transitions, 7012 flow [2024-05-12 13:28:20,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6525, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7012, PETRI_PLACES=420, PETRI_TRANSITIONS=491} [2024-05-12 13:28:20,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-05-12 13:28:20,972 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 491 transitions, 7012 flow [2024-05-12 13:28:20,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:20,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:20,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:20,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-05-12 13:28:20,972 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:20,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:20,973 INFO L85 PathProgramCache]: Analyzing trace with hash 821949724, now seen corresponding path program 19 times [2024-05-12 13:28:20,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:20,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147652522] [2024-05-12 13:28:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:20,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:21,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147652522] [2024-05-12 13:28:21,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147652522] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:21,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:21,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429604247] [2024-05-12 13:28:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:21,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:21,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:22,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:22,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 491 transitions, 7012 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:22,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:22,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:23,746 INFO L124 PetriNetUnfolderBase]: 3048/5429 cut-off events. [2024-05-12 13:28:23,746 INFO L125 PetriNetUnfolderBase]: For 379026/379026 co-relation queries the response was YES. [2024-05-12 13:28:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34876 conditions, 5429 events. 3048/5429 cut-off events. For 379026/379026 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 38059 event pairs, 1118 based on Foata normal form. 12/5251 useless extension candidates. Maximal degree in co-relation 34665. Up to 5020 conditions per place. [2024-05-12 13:28:23,801 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 486 selfloop transitions, 27 changer transitions 0/520 dead transitions. [2024-05-12 13:28:23,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 520 transitions, 8350 flow [2024-05-12 13:28:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-05-12 13:28:23,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-05-12 13:28:23,802 INFO L175 Difference]: Start difference. First operand has 420 places, 491 transitions, 7012 flow. Second operand 11 states and 163 transitions. [2024-05-12 13:28:23,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 520 transitions, 8350 flow [2024-05-12 13:28:25,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 520 transitions, 7879 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:26,002 INFO L231 Difference]: Finished difference. Result has 422 places, 493 transitions, 6772 flow [2024-05-12 13:28:26,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6541, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6772, PETRI_PLACES=422, PETRI_TRANSITIONS=493} [2024-05-12 13:28:26,003 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-05-12 13:28:26,003 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 493 transitions, 6772 flow [2024-05-12 13:28:26,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:26,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:26,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:26,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-05-12 13:28:26,004 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:26,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1679942420, now seen corresponding path program 2 times [2024-05-12 13:28:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987898318] [2024-05-12 13:28:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:26,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:26,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987898318] [2024-05-12 13:28:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987898318] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:26,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:26,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:28:26,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942267679] [2024-05-12 13:28:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:28:26,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:28:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:28:26,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:26,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 493 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:26,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:26,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:26,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:28,672 INFO L124 PetriNetUnfolderBase]: 3181/5682 cut-off events. [2024-05-12 13:28:28,673 INFO L125 PetriNetUnfolderBase]: For 469998/469998 co-relation queries the response was YES. [2024-05-12 13:28:28,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37622 conditions, 5682 events. 3181/5682 cut-off events. For 469998/469998 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 40303 event pairs, 1162 based on Foata normal form. 8/5501 useless extension candidates. Maximal degree in co-relation 37410. Up to 4954 conditions per place. [2024-05-12 13:28:28,741 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 493 selfloop transitions, 28 changer transitions 0/528 dead transitions. [2024-05-12 13:28:28,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 528 transitions, 8538 flow [2024-05-12 13:28:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-05-12 13:28:28,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-05-12 13:28:28,742 INFO L175 Difference]: Start difference. First operand has 422 places, 493 transitions, 6772 flow. Second operand 11 states and 168 transitions. [2024-05-12 13:28:28,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 528 transitions, 8538 flow [2024-05-12 13:28:31,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 528 transitions, 8341 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:31,741 INFO L231 Difference]: Finished difference. Result has 424 places, 495 transitions, 6898 flow [2024-05-12 13:28:31,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6575, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6898, PETRI_PLACES=424, PETRI_TRANSITIONS=495} [2024-05-12 13:28:31,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-05-12 13:28:31,742 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 495 transitions, 6898 flow [2024-05-12 13:28:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:31,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:31,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:31,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-05-12 13:28:31,742 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:31,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1337618592, now seen corresponding path program 20 times [2024-05-12 13:28:31,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:31,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238845280] [2024-05-12 13:28:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:31,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:32,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238845280] [2024-05-12 13:28:32,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238845280] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:32,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:32,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773669687] [2024-05-12 13:28:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:32,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:32,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:32,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 495 transitions, 6898 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:32,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:32,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:32,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:34,515 INFO L124 PetriNetUnfolderBase]: 3197/5703 cut-off events. [2024-05-12 13:28:34,515 INFO L125 PetriNetUnfolderBase]: For 400911/400911 co-relation queries the response was YES. [2024-05-12 13:28:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37244 conditions, 5703 events. 3197/5703 cut-off events. For 400911/400911 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40458 event pairs, 1038 based on Foata normal form. 2/5510 useless extension candidates. Maximal degree in co-relation 37031. Up to 4494 conditions per place. [2024-05-12 13:28:34,589 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 358 selfloop transitions, 161 changer transitions 0/526 dead transitions. [2024-05-12 13:28:34,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 526 transitions, 8254 flow [2024-05-12 13:28:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:28:34,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-05-12 13:28:34,590 INFO L175 Difference]: Start difference. First operand has 424 places, 495 transitions, 6898 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:28:34,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 526 transitions, 8254 flow [2024-05-12 13:28:37,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 526 transitions, 8092 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-05-12 13:28:37,689 INFO L231 Difference]: Finished difference. Result has 428 places, 497 transitions, 7239 flow [2024-05-12 13:28:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6736, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7239, PETRI_PLACES=428, PETRI_TRANSITIONS=497} [2024-05-12 13:28:37,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-05-12 13:28:37,690 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 497 transitions, 7239 flow [2024-05-12 13:28:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-05-12 13:28:37,690 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:37,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1337791572, now seen corresponding path program 21 times [2024-05-12 13:28:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586110466] [2024-05-12 13:28:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:38,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:38,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586110466] [2024-05-12 13:28:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586110466] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:38,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911743148] [2024-05-12 13:28:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:38,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:38,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:38,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 497 transitions, 7239 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:38,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:38,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:38,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:40,504 INFO L124 PetriNetUnfolderBase]: 3213/5731 cut-off events. [2024-05-12 13:28:40,504 INFO L125 PetriNetUnfolderBase]: For 393842/393842 co-relation queries the response was YES. [2024-05-12 13:28:40,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37839 conditions, 5731 events. 3213/5731 cut-off events. For 393842/393842 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 40758 event pairs, 1042 based on Foata normal form. 2/5538 useless extension candidates. Maximal degree in co-relation 37624. Up to 4452 conditions per place. [2024-05-12 13:28:40,578 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 358 selfloop transitions, 165 changer transitions 0/530 dead transitions. [2024-05-12 13:28:40,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 530 transitions, 8623 flow [2024-05-12 13:28:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 13:28:40,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-05-12 13:28:40,579 INFO L175 Difference]: Start difference. First operand has 428 places, 497 transitions, 7239 flow. Second operand 11 states and 185 transitions. [2024-05-12 13:28:40,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 530 transitions, 8623 flow [2024-05-12 13:28:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 530 transitions, 8136 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:44,029 INFO L231 Difference]: Finished difference. Result has 430 places, 499 transitions, 7267 flow [2024-05-12 13:28:44,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6752, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7267, PETRI_PLACES=430, PETRI_TRANSITIONS=499} [2024-05-12 13:28:44,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-05-12 13:28:44,030 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 499 transitions, 7267 flow [2024-05-12 13:28:44,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:44,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:44,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:44,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-05-12 13:28:44,030 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:44,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2034205460, now seen corresponding path program 3 times [2024-05-12 13:28:44,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:44,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678651477] [2024-05-12 13:28:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:44,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678651477] [2024-05-12 13:28:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678651477] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:44,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:44,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:28:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432820100] [2024-05-12 13:28:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:28:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:28:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:28:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:44,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 499 transitions, 7267 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:44,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:44,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:44,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:46,554 INFO L124 PetriNetUnfolderBase]: 3265/5839 cut-off events. [2024-05-12 13:28:46,554 INFO L125 PetriNetUnfolderBase]: For 469866/469866 co-relation queries the response was YES. [2024-05-12 13:28:46,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38548 conditions, 5839 events. 3265/5839 cut-off events. For 469866/469866 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41732 event pairs, 1204 based on Foata normal form. 8/5657 useless extension candidates. Maximal degree in co-relation 38332. Up to 4962 conditions per place. [2024-05-12 13:28:46,632 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 500 selfloop transitions, 31 changer transitions 0/538 dead transitions. [2024-05-12 13:28:46,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 538 transitions, 8965 flow [2024-05-12 13:28:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:28:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:28:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-05-12 13:28:46,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-05-12 13:28:46,637 INFO L175 Difference]: Start difference. First operand has 430 places, 499 transitions, 7267 flow. Second operand 12 states and 184 transitions. [2024-05-12 13:28:46,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 538 transitions, 8965 flow [2024-05-12 13:28:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 538 transitions, 8466 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-05-12 13:28:49,850 INFO L231 Difference]: Finished difference. Result has 433 places, 500 transitions, 6972 flow [2024-05-12 13:28:49,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6768, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6972, PETRI_PLACES=433, PETRI_TRANSITIONS=500} [2024-05-12 13:28:49,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-05-12 13:28:49,850 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 500 transitions, 6972 flow [2024-05-12 13:28:49,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:49,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-05-12 13:28:49,851 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:49,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1433551088, now seen corresponding path program 22 times [2024-05-12 13:28:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851404617] [2024-05-12 13:28:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851404617] [2024-05-12 13:28:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851404617] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:28:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609362613] [2024-05-12 13:28:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:28:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:28:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:28:50,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:50,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 500 transitions, 6972 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:50,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:50,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:50,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:52,649 INFO L124 PetriNetUnfolderBase]: 3281/5860 cut-off events. [2024-05-12 13:28:52,650 INFO L125 PetriNetUnfolderBase]: For 416458/416458 co-relation queries the response was YES. [2024-05-12 13:28:52,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38173 conditions, 5860 events. 3281/5860 cut-off events. For 416458/416458 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 41892 event pairs, 1064 based on Foata normal form. 2/5665 useless extension candidates. Maximal degree in co-relation 37956. Up to 4694 conditions per place. [2024-05-12 13:28:52,732 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 368 selfloop transitions, 154 changer transitions 0/529 dead transitions. [2024-05-12 13:28:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 529 transitions, 8328 flow [2024-05-12 13:28:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-05-12 13:28:52,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-05-12 13:28:52,733 INFO L175 Difference]: Start difference. First operand has 433 places, 500 transitions, 6972 flow. Second operand 11 states and 178 transitions. [2024-05-12 13:28:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 529 transitions, 8328 flow [2024-05-12 13:28:56,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 529 transitions, 8146 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-05-12 13:28:56,270 INFO L231 Difference]: Finished difference. Result has 434 places, 502 transitions, 7289 flow [2024-05-12 13:28:56,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6790, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7289, PETRI_PLACES=434, PETRI_TRANSITIONS=502} [2024-05-12 13:28:56,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-05-12 13:28:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 502 transitions, 7289 flow [2024-05-12 13:28:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:56,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-05-12 13:28:56,271 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:28:56,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1342260222, now seen corresponding path program 23 times [2024-05-12 13:28:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665677793] [2024-05-12 13:28:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:57,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:57,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665677793] [2024-05-12 13:28:57,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665677793] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:57,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:57,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:28:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068798344] [2024-05-12 13:28:57,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:57,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:28:57,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:28:57,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:28:57,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:28:57,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 502 transitions, 7289 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:57,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:28:57,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:58,866 INFO L124 PetriNetUnfolderBase]: 3381/6046 cut-off events. [2024-05-12 13:28:58,866 INFO L125 PetriNetUnfolderBase]: For 541747/541747 co-relation queries the response was YES. [2024-05-12 13:28:58,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41571 conditions, 6046 events. 3381/6046 cut-off events. For 541747/541747 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 43579 event pairs, 1137 based on Foata normal form. 2/5865 useless extension candidates. Maximal degree in co-relation 41353. Up to 3990 conditions per place. [2024-05-12 13:28:58,946 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 348 selfloop transitions, 189 changer transitions 0/544 dead transitions. [2024-05-12 13:28:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 544 transitions, 9231 flow [2024-05-12 13:28:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:28:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:28:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-05-12 13:28:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-05-12 13:28:58,947 INFO L175 Difference]: Start difference. First operand has 434 places, 502 transitions, 7289 flow. Second operand 11 states and 191 transitions. [2024-05-12 13:28:58,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 544 transitions, 9231 flow [2024-05-12 13:29:02,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 544 transitions, 8748 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-05-12 13:29:02,801 INFO L231 Difference]: Finished difference. Result has 436 places, 506 transitions, 7565 flow [2024-05-12 13:29:02,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6806, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7565, PETRI_PLACES=436, PETRI_TRANSITIONS=506} [2024-05-12 13:29:02,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-05-12 13:29:02,801 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 506 transitions, 7565 flow [2024-05-12 13:29:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:02,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:02,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:02,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-05-12 13:29:02,801 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:02,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1205470448, now seen corresponding path program 24 times [2024-05-12 13:29:02,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:02,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820161934] [2024-05-12 13:29:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:02,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:03,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:03,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820161934] [2024-05-12 13:29:03,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820161934] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:03,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:03,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:29:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299562491] [2024-05-12 13:29:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:03,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:29:03,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:03,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:29:03,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:29:03,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:03,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 506 transitions, 7565 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:03,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:03,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:03,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:05,581 INFO L124 PetriNetUnfolderBase]: 3497/6264 cut-off events. [2024-05-12 13:29:05,581 INFO L125 PetriNetUnfolderBase]: For 705376/705376 co-relation queries the response was YES. [2024-05-12 13:29:05,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45517 conditions, 6264 events. 3497/6264 cut-off events. For 705376/705376 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 45537 event pairs, 1138 based on Foata normal form. 2/6074 useless extension candidates. Maximal degree in co-relation 45298. Up to 4556 conditions per place. [2024-05-12 13:29:05,660 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 360 selfloop transitions, 179 changer transitions 0/546 dead transitions. [2024-05-12 13:29:05,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 546 transitions, 9505 flow [2024-05-12 13:29:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:29:05,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 13:29:05,661 INFO L175 Difference]: Start difference. First operand has 436 places, 506 transitions, 7565 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:29:05,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 546 transitions, 9505 flow [2024-05-12 13:29:10,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 546 transitions, 8937 flow, removed 128 selfloop flow, removed 8 redundant places. [2024-05-12 13:29:10,842 INFO L231 Difference]: Finished difference. Result has 439 places, 510 transitions, 7744 flow [2024-05-12 13:29:10,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7744, PETRI_PLACES=439, PETRI_TRANSITIONS=510} [2024-05-12 13:29:10,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-05-12 13:29:10,842 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 510 transitions, 7744 flow [2024-05-12 13:29:10,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:10,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:10,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-05-12 13:29:10,843 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1679643890, now seen corresponding path program 4 times [2024-05-12 13:29:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086602010] [2024-05-12 13:29:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086602010] [2024-05-12 13:29:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086602010] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413132552] [2024-05-12 13:29:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:11,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:11,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:11,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:11,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:12,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:12,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 510 transitions, 7744 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:13,940 INFO L124 PetriNetUnfolderBase]: 3484/6248 cut-off events. [2024-05-12 13:29:13,940 INFO L125 PetriNetUnfolderBase]: For 670583/670583 co-relation queries the response was YES. [2024-05-12 13:29:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43467 conditions, 6248 events. 3484/6248 cut-off events. For 670583/670583 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 45458 event pairs, 1368 based on Foata normal form. 10/6064 useless extension candidates. Maximal degree in co-relation 43247. Up to 5686 conditions per place. [2024-05-12 13:29:14,032 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 505 selfloop transitions, 27 changer transitions 0/539 dead transitions. [2024-05-12 13:29:14,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 539 transitions, 8964 flow [2024-05-12 13:29:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:29:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:29:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-05-12 13:29:14,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-05-12 13:29:14,033 INFO L175 Difference]: Start difference. First operand has 439 places, 510 transitions, 7744 flow. Second operand 12 states and 174 transitions. [2024-05-12 13:29:14,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 539 transitions, 8964 flow [2024-05-12 13:29:18,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 539 transitions, 8499 flow, removed 124 selfloop flow, removed 7 redundant places. [2024-05-12 13:29:18,688 INFO L231 Difference]: Finished difference. Result has 444 places, 510 transitions, 7342 flow [2024-05-12 13:29:18,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7342, PETRI_PLACES=444, PETRI_TRANSITIONS=510} [2024-05-12 13:29:18,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-05-12 13:29:18,689 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 510 transitions, 7342 flow [2024-05-12 13:29:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:18,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:18,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-05-12 13:29:18,689 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash 773677262, now seen corresponding path program 25 times [2024-05-12 13:29:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218902985] [2024-05-12 13:29:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:18,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218902985] [2024-05-12 13:29:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218902985] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435730588] [2024-05-12 13:29:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:19,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:19,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:19,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 510 transitions, 7342 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:19,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:19,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:19,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:21,500 INFO L124 PetriNetUnfolderBase]: 3500/6268 cut-off events. [2024-05-12 13:29:21,500 INFO L125 PetriNetUnfolderBase]: For 578356/578356 co-relation queries the response was YES. [2024-05-12 13:29:21,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43098 conditions, 6268 events. 3500/6268 cut-off events. For 578356/578356 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 45586 event pairs, 1202 based on Foata normal form. 2/6069 useless extension candidates. Maximal degree in co-relation 42876. Up to 5095 conditions per place. [2024-05-12 13:29:21,584 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 391 selfloop transitions, 141 changer transitions 0/539 dead transitions. [2024-05-12 13:29:21,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 539 transitions, 8706 flow [2024-05-12 13:29:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:29:21,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-05-12 13:29:21,586 INFO L175 Difference]: Start difference. First operand has 444 places, 510 transitions, 7342 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:29:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 539 transitions, 8706 flow [2024-05-12 13:29:25,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 539 transitions, 8642 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-05-12 13:29:25,827 INFO L231 Difference]: Finished difference. Result has 444 places, 512 transitions, 7739 flow [2024-05-12 13:29:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7278, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7739, PETRI_PLACES=444, PETRI_TRANSITIONS=512} [2024-05-12 13:29:25,827 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-05-12 13:29:25,827 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 512 transitions, 7739 flow [2024-05-12 13:29:25,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:25,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:25,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:25,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-05-12 13:29:25,828 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:25,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1441825298, now seen corresponding path program 26 times [2024-05-12 13:29:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:25,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796107298] [2024-05-12 13:29:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796107298] [2024-05-12 13:29:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796107298] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:26,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656967773] [2024-05-12 13:29:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:26,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:26,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:26,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 512 transitions, 7739 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:26,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:26,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:26,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:28,897 INFO L124 PetriNetUnfolderBase]: 3584/6431 cut-off events. [2024-05-12 13:29:28,897 INFO L125 PetriNetUnfolderBase]: For 719113/719113 co-relation queries the response was YES. [2024-05-12 13:29:28,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45172 conditions, 6431 events. 3584/6431 cut-off events. For 719113/719113 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 47113 event pairs, 1165 based on Foata normal form. 12/6240 useless extension candidates. Maximal degree in co-relation 44949. Up to 5121 conditions per place. [2024-05-12 13:29:28,976 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 384 selfloop transitions, 154 changer transitions 0/545 dead transitions. [2024-05-12 13:29:28,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 545 transitions, 9147 flow [2024-05-12 13:29:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:29:28,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-05-12 13:29:28,977 INFO L175 Difference]: Start difference. First operand has 444 places, 512 transitions, 7739 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:29:28,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 545 transitions, 9147 flow [2024-05-12 13:29:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 545 transitions, 8706 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-05-12 13:29:33,366 INFO L231 Difference]: Finished difference. Result has 446 places, 514 transitions, 7787 flow [2024-05-12 13:29:33,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7298, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7787, PETRI_PLACES=446, PETRI_TRANSITIONS=514} [2024-05-12 13:29:33,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-05-12 13:29:33,366 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 514 transitions, 7787 flow [2024-05-12 13:29:33,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:33,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:33,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:33,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-05-12 13:29:33,366 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:33,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:33,367 INFO L85 PathProgramCache]: Analyzing trace with hash -823801164, now seen corresponding path program 27 times [2024-05-12 13:29:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053712024] [2024-05-12 13:29:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:33,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:34,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053712024] [2024-05-12 13:29:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053712024] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:34,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608419432] [2024-05-12 13:29:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:34,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:34,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 514 transitions, 7787 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:34,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:34,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:34,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:36,269 INFO L124 PetriNetUnfolderBase]: 3600/6456 cut-off events. [2024-05-12 13:29:36,269 INFO L125 PetriNetUnfolderBase]: For 620888/620888 co-relation queries the response was YES. [2024-05-12 13:29:36,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45414 conditions, 6456 events. 3600/6456 cut-off events. For 620888/620888 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 47295 event pairs, 1186 based on Foata normal form. 2/6255 useless extension candidates. Maximal degree in co-relation 45190. Up to 5279 conditions per place. [2024-05-12 13:29:36,361 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 370 selfloop transitions, 166 changer transitions 0/543 dead transitions. [2024-05-12 13:29:36,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 543 transitions, 9163 flow [2024-05-12 13:29:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 13:29:36,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-05-12 13:29:36,362 INFO L175 Difference]: Start difference. First operand has 446 places, 514 transitions, 7787 flow. Second operand 11 states and 175 transitions. [2024-05-12 13:29:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 543 transitions, 9163 flow [2024-05-12 13:29:41,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 543 transitions, 8716 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-05-12 13:29:41,214 INFO L231 Difference]: Finished difference. Result has 448 places, 516 transitions, 7855 flow [2024-05-12 13:29:41,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7855, PETRI_PLACES=448, PETRI_TRANSITIONS=516} [2024-05-12 13:29:41,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-05-12 13:29:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 516 transitions, 7855 flow [2024-05-12 13:29:41,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:41,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:41,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-05-12 13:29:41,215 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash 773670752, now seen corresponding path program 28 times [2024-05-12 13:29:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316305032] [2024-05-12 13:29:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:42,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316305032] [2024-05-12 13:29:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316305032] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:42,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576504224] [2024-05-12 13:29:42,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:42,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 516 transitions, 7855 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:42,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:44,161 INFO L124 PetriNetUnfolderBase]: 3635/6519 cut-off events. [2024-05-12 13:29:44,161 INFO L125 PetriNetUnfolderBase]: For 638173/638173 co-relation queries the response was YES. [2024-05-12 13:29:44,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45982 conditions, 6519 events. 3635/6519 cut-off events. For 638173/638173 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 47879 event pairs, 1238 based on Foata normal form. 2/6319 useless extension candidates. Maximal degree in co-relation 45757. Up to 5122 conditions per place. [2024-05-12 13:29:44,256 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 401 selfloop transitions, 146 changer transitions 0/554 dead transitions. [2024-05-12 13:29:44,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 554 transitions, 9773 flow [2024-05-12 13:29:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:29:44,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 13:29:44,257 INFO L175 Difference]: Start difference. First operand has 448 places, 516 transitions, 7855 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:29:44,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 554 transitions, 9773 flow [2024-05-12 13:29:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 554 transitions, 9282 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-05-12 13:29:48,615 INFO L231 Difference]: Finished difference. Result has 450 places, 520 transitions, 8013 flow [2024-05-12 13:29:48,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8013, PETRI_PLACES=450, PETRI_TRANSITIONS=520} [2024-05-12 13:29:48,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-05-12 13:29:48,615 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 520 transitions, 8013 flow [2024-05-12 13:29:48,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:48,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:48,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:48,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-05-12 13:29:48,615 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:48,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -392308430, now seen corresponding path program 29 times [2024-05-12 13:29:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819028795] [2024-05-12 13:29:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:49,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819028795] [2024-05-12 13:29:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819028795] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:49,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:49,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:29:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050402661] [2024-05-12 13:29:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:49,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:29:49,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:29:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:29:49,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:49,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 520 transitions, 8013 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:49,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:49,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:49,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:51,643 INFO L124 PetriNetUnfolderBase]: 3619/6493 cut-off events. [2024-05-12 13:29:51,643 INFO L125 PetriNetUnfolderBase]: For 617537/617537 co-relation queries the response was YES. [2024-05-12 13:29:51,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43727 conditions, 6493 events. 3619/6493 cut-off events. For 617537/617537 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 47709 event pairs, 1217 based on Foata normal form. 12/6301 useless extension candidates. Maximal degree in co-relation 43501. Up to 5182 conditions per place. [2024-05-12 13:29:51,732 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 402 selfloop transitions, 142 changer transitions 0/551 dead transitions. [2024-05-12 13:29:51,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 551 transitions, 9263 flow [2024-05-12 13:29:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-05-12 13:29:51,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-05-12 13:29:51,733 INFO L175 Difference]: Start difference. First operand has 450 places, 520 transitions, 8013 flow. Second operand 11 states and 182 transitions. [2024-05-12 13:29:51,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 551 transitions, 9263 flow [2024-05-12 13:29:56,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 551 transitions, 8781 flow, removed 156 selfloop flow, removed 7 redundant places. [2024-05-12 13:29:56,032 INFO L231 Difference]: Finished difference. Result has 454 places, 520 transitions, 7822 flow [2024-05-12 13:29:56,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7531, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7822, PETRI_PLACES=454, PETRI_TRANSITIONS=520} [2024-05-12 13:29:56,032 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-05-12 13:29:56,032 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 520 transitions, 7822 flow [2024-05-12 13:29:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:56,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:56,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-05-12 13:29:56,033 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:29:56,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -823807674, now seen corresponding path program 30 times [2024-05-12 13:29:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795286919] [2024-05-12 13:29:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795286919] [2024-05-12 13:29:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795286919] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:56,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:56,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:29:56,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143584449] [2024-05-12 13:29:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:29:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:29:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:29:57,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:29:57,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 520 transitions, 7822 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:57,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:57,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:29:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:58,956 INFO L124 PetriNetUnfolderBase]: 3654/6555 cut-off events. [2024-05-12 13:29:58,957 INFO L125 PetriNetUnfolderBase]: For 515859/515859 co-relation queries the response was YES. [2024-05-12 13:29:59,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44304 conditions, 6555 events. 3654/6555 cut-off events. For 515859/515859 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 48223 event pairs, 1169 based on Foata normal form. 2/6356 useless extension candidates. Maximal degree in co-relation 44076. Up to 5007 conditions per place. [2024-05-12 13:29:59,048 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 378 selfloop transitions, 173 changer transitions 0/558 dead transitions. [2024-05-12 13:29:59,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 558 transitions, 9760 flow [2024-05-12 13:29:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:29:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:29:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 13:29:59,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-05-12 13:29:59,049 INFO L175 Difference]: Start difference. First operand has 454 places, 520 transitions, 7822 flow. Second operand 11 states and 183 transitions. [2024-05-12 13:29:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 558 transitions, 9760 flow [2024-05-12 13:30:03,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 558 transitions, 9464 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-05-12 13:30:03,150 INFO L231 Difference]: Finished difference. Result has 455 places, 524 transitions, 8237 flow [2024-05-12 13:30:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7526, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8237, PETRI_PLACES=455, PETRI_TRANSITIONS=524} [2024-05-12 13:30:03,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-05-12 13:30:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 524 transitions, 8237 flow [2024-05-12 13:30:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:03,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-05-12 13:30:03,151 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:03,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1833628352, now seen corresponding path program 5 times [2024-05-12 13:30:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:03,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023209810] [2024-05-12 13:30:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023209810] [2024-05-12 13:30:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023209810] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:04,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:04,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:30:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139682417] [2024-05-12 13:30:04,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:04,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:30:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:30:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:30:04,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:04,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 524 transitions, 8237 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:04,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:04,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:04,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:06,476 INFO L124 PetriNetUnfolderBase]: 3735/6703 cut-off events. [2024-05-12 13:30:06,476 INFO L125 PetriNetUnfolderBase]: For 636554/636554 co-relation queries the response was YES. [2024-05-12 13:30:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45852 conditions, 6703 events. 3735/6703 cut-off events. For 636554/636554 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 49575 event pairs, 1220 based on Foata normal form. 10/6504 useless extension candidates. Maximal degree in co-relation 45623. Up to 5383 conditions per place. [2024-05-12 13:30:06,575 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 385 selfloop transitions, 169 changer transitions 0/561 dead transitions. [2024-05-12 13:30:06,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 561 transitions, 9691 flow [2024-05-12 13:30:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:30:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:30:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-05-12 13:30:06,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-05-12 13:30:06,576 INFO L175 Difference]: Start difference. First operand has 455 places, 524 transitions, 8237 flow. Second operand 12 states and 192 transitions. [2024-05-12 13:30:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 561 transitions, 9691 flow [2024-05-12 13:30:11,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 561 transitions, 9301 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-05-12 13:30:11,033 INFO L231 Difference]: Finished difference. Result has 460 places, 527 transitions, 8365 flow [2024-05-12 13:30:11,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7849, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8365, PETRI_PLACES=460, PETRI_TRANSITIONS=527} [2024-05-12 13:30:11,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-05-12 13:30:11,034 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 527 transitions, 8365 flow [2024-05-12 13:30:11,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:11,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:11,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:11,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-05-12 13:30:11,034 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:11,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash 782258930, now seen corresponding path program 6 times [2024-05-12 13:30:11,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:11,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972445025] [2024-05-12 13:30:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:11,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972445025] [2024-05-12 13:30:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972445025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:30:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143784925] [2024-05-12 13:30:11,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:30:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:30:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:30:11,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:11,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 527 transitions, 8365 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:11,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:11,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:11,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:14,120 INFO L124 PetriNetUnfolderBase]: 3849/6921 cut-off events. [2024-05-12 13:30:14,121 INFO L125 PetriNetUnfolderBase]: For 748006/748006 co-relation queries the response was YES. [2024-05-12 13:30:14,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49415 conditions, 6921 events. 3849/6921 cut-off events. For 748006/748006 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 51506 event pairs, 1325 based on Foata normal form. 8/6724 useless extension candidates. Maximal degree in co-relation 49184. Up to 5151 conditions per place. [2024-05-12 13:30:14,224 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 414 selfloop transitions, 147 changer transitions 0/568 dead transitions. [2024-05-12 13:30:14,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 568 transitions, 10463 flow [2024-05-12 13:30:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:30:14,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 13:30:14,225 INFO L175 Difference]: Start difference. First operand has 460 places, 527 transitions, 8365 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:30:14,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 568 transitions, 10463 flow [2024-05-12 13:30:19,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 568 transitions, 10026 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-05-12 13:30:19,460 INFO L231 Difference]: Finished difference. Result has 464 places, 530 transitions, 8668 flow [2024-05-12 13:30:19,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7928, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8668, PETRI_PLACES=464, PETRI_TRANSITIONS=530} [2024-05-12 13:30:19,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 422 predicate places. [2024-05-12 13:30:19,461 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 530 transitions, 8668 flow [2024-05-12 13:30:19,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:19,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:19,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-05-12 13:30:19,461 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:19,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1433544578, now seen corresponding path program 31 times [2024-05-12 13:30:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404997935] [2024-05-12 13:30:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:19,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:20,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404997935] [2024-05-12 13:30:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404997935] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:20,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:30:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164861067] [2024-05-12 13:30:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:30:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:30:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:30:20,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:20,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 530 transitions, 8668 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:20,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:20,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:20,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:22,500 INFO L124 PetriNetUnfolderBase]: 3846/6917 cut-off events. [2024-05-12 13:30:22,500 INFO L125 PetriNetUnfolderBase]: For 641518/641518 co-relation queries the response was YES. [2024-05-12 13:30:22,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48494 conditions, 6917 events. 3846/6917 cut-off events. For 641518/641518 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 51613 event pairs, 1308 based on Foata normal form. 2/6712 useless extension candidates. Maximal degree in co-relation 48261. Up to 5534 conditions per place. [2024-05-12 13:30:22,616 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 395 selfloop transitions, 161 changer transitions 0/563 dead transitions. [2024-05-12 13:30:22,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 563 transitions, 9958 flow [2024-05-12 13:30:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 13:30:22,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-05-12 13:30:22,618 INFO L175 Difference]: Start difference. First operand has 464 places, 530 transitions, 8668 flow. Second operand 11 states and 185 transitions. [2024-05-12 13:30:22,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 563 transitions, 9958 flow [2024-05-12 13:30:28,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 563 transitions, 9630 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-05-12 13:30:28,617 INFO L231 Difference]: Finished difference. Result has 468 places, 530 transitions, 8667 flow [2024-05-12 13:30:28,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8340, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8667, PETRI_PLACES=468, PETRI_TRANSITIONS=530} [2024-05-12 13:30:28,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-05-12 13:30:28,618 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 530 transitions, 8667 flow [2024-05-12 13:30:28,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:28,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:28,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:28,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-05-12 13:30:28,618 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 544893424, now seen corresponding path program 32 times [2024-05-12 13:30:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61792110] [2024-05-12 13:30:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:29,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:29,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61792110] [2024-05-12 13:30:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61792110] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:29,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:30:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485262904] [2024-05-12 13:30:29,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:30:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:30:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:30:29,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:29,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 530 transitions, 8667 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:29,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:29,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:29,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:31,804 INFO L124 PetriNetUnfolderBase]: 3830/6888 cut-off events. [2024-05-12 13:30:31,804 INFO L125 PetriNetUnfolderBase]: For 600624/600624 co-relation queries the response was YES. [2024-05-12 13:30:31,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46528 conditions, 6888 events. 3830/6888 cut-off events. For 600624/600624 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 51363 event pairs, 1300 based on Foata normal form. 12/6691 useless extension candidates. Maximal degree in co-relation 46293. Up to 5568 conditions per place. [2024-05-12 13:30:31,913 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 391 selfloop transitions, 163 changer transitions 0/561 dead transitions. [2024-05-12 13:30:31,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 561 transitions, 9937 flow [2024-05-12 13:30:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-05-12 13:30:31,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-05-12 13:30:31,914 INFO L175 Difference]: Start difference. First operand has 468 places, 530 transitions, 8667 flow. Second operand 11 states and 180 transitions. [2024-05-12 13:30:31,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 561 transitions, 9937 flow [2024-05-12 13:30:36,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 561 transitions, 9162 flow, removed 154 selfloop flow, removed 11 redundant places. [2024-05-12 13:30:36,422 INFO L231 Difference]: Finished difference. Result has 468 places, 530 transitions, 8225 flow [2024-05-12 13:30:36,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8225, PETRI_PLACES=468, PETRI_TRANSITIONS=530} [2024-05-12 13:30:36,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-05-12 13:30:36,423 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 530 transitions, 8225 flow [2024-05-12 13:30:36,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:36,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:36,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:36,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-05-12 13:30:36,423 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:36,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash 545200882, now seen corresponding path program 7 times [2024-05-12 13:30:36,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:36,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385435661] [2024-05-12 13:30:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385435661] [2024-05-12 13:30:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385435661] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:37,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:30:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874995571] [2024-05-12 13:30:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:37,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:30:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:30:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:30:37,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:37,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 530 transitions, 8225 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:37,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:37,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:37,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:39,431 INFO L124 PetriNetUnfolderBase]: 3963/7141 cut-off events. [2024-05-12 13:30:39,431 INFO L125 PetriNetUnfolderBase]: For 689907/689907 co-relation queries the response was YES. [2024-05-12 13:30:39,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48669 conditions, 7141 events. 3963/7141 cut-off events. For 689907/689907 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 53672 event pairs, 1346 based on Foata normal form. 8/6942 useless extension candidates. Maximal degree in co-relation 48434. Up to 5372 conditions per place. [2024-05-12 13:30:39,528 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 397 selfloop transitions, 165 changer transitions 0/569 dead transitions. [2024-05-12 13:30:39,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 569 transitions, 10157 flow [2024-05-12 13:30:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 13:30:39,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-05-12 13:30:39,529 INFO L175 Difference]: Start difference. First operand has 468 places, 530 transitions, 8225 flow. Second operand 11 states and 185 transitions. [2024-05-12 13:30:39,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 569 transitions, 10157 flow [2024-05-12 13:30:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 569 transitions, 9808 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-05-12 13:30:44,664 INFO L231 Difference]: Finished difference. Result has 469 places, 532 transitions, 8504 flow [2024-05-12 13:30:44,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7876, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8504, PETRI_PLACES=469, PETRI_TRANSITIONS=532} [2024-05-12 13:30:44,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-05-12 13:30:44,664 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 532 transitions, 8504 flow [2024-05-12 13:30:44,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:44,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:44,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:44,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-05-12 13:30:44,665 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:44,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1442132756, now seen corresponding path program 8 times [2024-05-12 13:30:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451750717] [2024-05-12 13:30:44,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451750717] [2024-05-12 13:30:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451750717] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:45,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:45,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:30:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5526579] [2024-05-12 13:30:45,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:45,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:30:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:30:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:30:45,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 532 transitions, 8504 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:45,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:47,675 INFO L124 PetriNetUnfolderBase]: 4020/7260 cut-off events. [2024-05-12 13:30:47,676 INFO L125 PetriNetUnfolderBase]: For 748787/748787 co-relation queries the response was YES. [2024-05-12 13:30:47,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50044 conditions, 7260 events. 4020/7260 cut-off events. For 748787/748787 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 54841 event pairs, 1414 based on Foata normal form. 8/7062 useless extension candidates. Maximal degree in co-relation 49808. Up to 5523 conditions per place. [2024-05-12 13:30:47,788 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 406 selfloop transitions, 158 changer transitions 0/571 dead transitions. [2024-05-12 13:30:47,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 571 transitions, 10446 flow [2024-05-12 13:30:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-05-12 13:30:47,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-05-12 13:30:47,789 INFO L175 Difference]: Start difference. First operand has 469 places, 532 transitions, 8504 flow. Second operand 11 states and 186 transitions. [2024-05-12 13:30:47,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 571 transitions, 10446 flow [2024-05-12 13:30:53,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 571 transitions, 10075 flow, removed 80 selfloop flow, removed 8 redundant places. [2024-05-12 13:30:53,447 INFO L231 Difference]: Finished difference. Result has 472 places, 534 transitions, 8753 flow [2024-05-12 13:30:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8135, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8753, PETRI_PLACES=472, PETRI_TRANSITIONS=534} [2024-05-12 13:30:53,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-05-12 13:30:53,447 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 534 transitions, 8753 flow [2024-05-12 13:30:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:53,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:30:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-05-12 13:30:53,448 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:30:53,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 545776112, now seen corresponding path program 33 times [2024-05-12 13:30:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826050378] [2024-05-12 13:30:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826050378] [2024-05-12 13:30:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826050378] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:54,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:54,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:30:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515119748] [2024-05-12 13:30:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:54,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:30:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:30:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:30:54,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:30:54,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 534 transitions, 8753 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:54,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:54,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:30:54,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:56,854 INFO L124 PetriNetUnfolderBase]: 4017/7255 cut-off events. [2024-05-12 13:30:56,854 INFO L125 PetriNetUnfolderBase]: For 627013/627013 co-relation queries the response was YES. [2024-05-12 13:30:56,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49476 conditions, 7255 events. 4017/7255 cut-off events. For 627013/627013 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 54847 event pairs, 1492 based on Foata normal form. 2/7047 useless extension candidates. Maximal degree in co-relation 49239. Up to 6063 conditions per place. [2024-05-12 13:30:56,967 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 412 selfloop transitions, 143 changer transitions 0/562 dead transitions. [2024-05-12 13:30:56,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 562 transitions, 10039 flow [2024-05-12 13:30:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:30:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:30:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-05-12 13:30:56,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-05-12 13:30:56,968 INFO L175 Difference]: Start difference. First operand has 472 places, 534 transitions, 8753 flow. Second operand 11 states and 180 transitions. [2024-05-12 13:30:56,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 562 transitions, 10039 flow [2024-05-12 13:31:03,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 562 transitions, 9685 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-05-12 13:31:03,435 INFO L231 Difference]: Finished difference. Result has 476 places, 535 transitions, 8738 flow [2024-05-12 13:31:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8399, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8738, PETRI_PLACES=476, PETRI_TRANSITIONS=535} [2024-05-12 13:31:03,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-05-12 13:31:03,435 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 535 transitions, 8738 flow [2024-05-12 13:31:03,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:03,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:03,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:03,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-05-12 13:31:03,436 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:03,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash 544902352, now seen corresponding path program 9 times [2024-05-12 13:31:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891876715] [2024-05-12 13:31:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891876715] [2024-05-12 13:31:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891876715] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:31:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250521745] [2024-05-12 13:31:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:31:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:31:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:31:04,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:04,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 535 transitions, 8738 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:04,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:04,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:04,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:07,231 INFO L124 PetriNetUnfolderBase]: 4047/7318 cut-off events. [2024-05-12 13:31:07,231 INFO L125 PetriNetUnfolderBase]: For 666515/666515 co-relation queries the response was YES. [2024-05-12 13:31:07,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49286 conditions, 7318 events. 4047/7318 cut-off events. For 666515/666515 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 55440 event pairs, 1458 based on Foata normal form. 10/7119 useless extension candidates. Maximal degree in co-relation 49047. Up to 5853 conditions per place. [2024-05-12 13:31:07,327 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 400 selfloop transitions, 163 changer transitions 0/570 dead transitions. [2024-05-12 13:31:07,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 570 transitions, 10164 flow [2024-05-12 13:31:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:31:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:31:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-05-12 13:31:07,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-05-12 13:31:07,328 INFO L175 Difference]: Start difference. First operand has 476 places, 535 transitions, 8738 flow. Second operand 12 states and 193 transitions. [2024-05-12 13:31:07,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 570 transitions, 10164 flow [2024-05-12 13:31:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 570 transitions, 9717 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-05-12 13:31:12,456 INFO L231 Difference]: Finished difference. Result has 479 places, 536 transitions, 8752 flow [2024-05-12 13:31:12,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8291, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8752, PETRI_PLACES=479, PETRI_TRANSITIONS=536} [2024-05-12 13:31:12,456 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-05-12 13:31:12,456 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 536 transitions, 8752 flow [2024-05-12 13:31:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:12,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:12,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:12,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-05-12 13:31:12,457 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:12,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash -505468168, now seen corresponding path program 34 times [2024-05-12 13:31:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789058821] [2024-05-12 13:31:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:12,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789058821] [2024-05-12 13:31:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789058821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:31:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330746863] [2024-05-12 13:31:13,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:13,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:31:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:31:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:31:13,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:13,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 536 transitions, 8752 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:13,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:13,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:13,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:15,709 INFO L124 PetriNetUnfolderBase]: 4063/7346 cut-off events. [2024-05-12 13:31:15,709 INFO L125 PetriNetUnfolderBase]: For 575325/575325 co-relation queries the response was YES. [2024-05-12 13:31:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49568 conditions, 7346 events. 4063/7346 cut-off events. For 575325/575325 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 55718 event pairs, 1512 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 49328. Up to 6109 conditions per place. [2024-05-12 13:31:15,813 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 414 selfloop transitions, 146 changer transitions 0/567 dead transitions. [2024-05-12 13:31:15,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 567 transitions, 10200 flow [2024-05-12 13:31:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 13:31:15,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 13:31:15,814 INFO L175 Difference]: Start difference. First operand has 479 places, 536 transitions, 8752 flow. Second operand 11 states and 184 transitions. [2024-05-12 13:31:15,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 567 transitions, 10200 flow [2024-05-12 13:31:21,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 567 transitions, 9741 flow, removed 54 selfloop flow, removed 13 redundant places. [2024-05-12 13:31:21,257 INFO L231 Difference]: Finished difference. Result has 477 places, 538 transitions, 8776 flow [2024-05-12 13:31:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8293, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8776, PETRI_PLACES=477, PETRI_TRANSITIONS=538} [2024-05-12 13:31:21,257 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-05-12 13:31:21,257 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 538 transitions, 8776 flow [2024-05-12 13:31:21,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:21,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:21,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:21,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-05-12 13:31:21,258 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:21,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 545596622, now seen corresponding path program 35 times [2024-05-12 13:31:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24681561] [2024-05-12 13:31:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24681561] [2024-05-12 13:31:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24681561] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:31:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098151755] [2024-05-12 13:31:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:31:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:31:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:31:22,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:22,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 538 transitions, 8776 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:22,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:22,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:22,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:24,673 INFO L124 PetriNetUnfolderBase]: 4060/7341 cut-off events. [2024-05-12 13:31:24,673 INFO L125 PetriNetUnfolderBase]: For 533346/533346 co-relation queries the response was YES. [2024-05-12 13:31:24,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48577 conditions, 7341 events. 4060/7341 cut-off events. For 533346/533346 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 55741 event pairs, 1507 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 48338. Up to 5824 conditions per place. [2024-05-12 13:31:24,783 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 409 selfloop transitions, 157 changer transitions 0/573 dead transitions. [2024-05-12 13:31:24,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 573 transitions, 10102 flow [2024-05-12 13:31:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-05-12 13:31:24,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 13:31:24,784 INFO L175 Difference]: Start difference. First operand has 477 places, 538 transitions, 8776 flow. Second operand 11 states and 190 transitions. [2024-05-12 13:31:24,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 573 transitions, 10102 flow [2024-05-12 13:31:30,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 573 transitions, 9549 flow, removed 132 selfloop flow, removed 9 redundant places. [2024-05-12 13:31:30,363 INFO L231 Difference]: Finished difference. Result has 479 places, 538 transitions, 8542 flow [2024-05-12 13:31:30,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8223, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8542, PETRI_PLACES=479, PETRI_TRANSITIONS=538} [2024-05-12 13:31:30,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-05-12 13:31:30,364 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 538 transitions, 8542 flow [2024-05-12 13:31:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:30,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:30,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:30,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-05-12 13:31:30,364 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:30,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 823154962, now seen corresponding path program 1 times [2024-05-12 13:31:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123443632] [2024-05-12 13:31:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123443632] [2024-05-12 13:31:31,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123443632] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:31,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:31,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:31:31,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766830596] [2024-05-12 13:31:31,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:31:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:31:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:31:31,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:31,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 538 transitions, 8542 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:31,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:31,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:31,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:33,964 INFO L124 PetriNetUnfolderBase]: 4096/7411 cut-off events. [2024-05-12 13:31:33,964 INFO L125 PetriNetUnfolderBase]: For 592459/592459 co-relation queries the response was YES. [2024-05-12 13:31:34,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48786 conditions, 7411 events. 4096/7411 cut-off events. For 592459/592459 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 56428 event pairs, 1529 based on Foata normal form. 6/7268 useless extension candidates. Maximal degree in co-relation 48546. Up to 6602 conditions per place. [2024-05-12 13:31:34,057 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 505 selfloop transitions, 74 changer transitions 0/586 dead transitions. [2024-05-12 13:31:34,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 586 transitions, 10812 flow [2024-05-12 13:31:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 13:31:34,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-05-12 13:31:34,058 INFO L175 Difference]: Start difference. First operand has 479 places, 538 transitions, 8542 flow. Second operand 11 states and 174 transitions. [2024-05-12 13:31:34,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 586 transitions, 10812 flow [2024-05-12 13:31:38,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 586 transitions, 10088 flow, removed 44 selfloop flow, removed 13 redundant places. [2024-05-12 13:31:38,832 INFO L231 Difference]: Finished difference. Result has 481 places, 547 transitions, 8945 flow [2024-05-12 13:31:38,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7818, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8945, PETRI_PLACES=481, PETRI_TRANSITIONS=547} [2024-05-12 13:31:38,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-05-12 13:31:38,832 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 547 transitions, 8945 flow [2024-05-12 13:31:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:38,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:38,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:38,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-05-12 13:31:38,833 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:38,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash -406172502, now seen corresponding path program 2 times [2024-05-12 13:31:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:38,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936792840] [2024-05-12 13:31:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936792840] [2024-05-12 13:31:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936792840] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:39,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:39,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:31:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714908735] [2024-05-12 13:31:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:39,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:31:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:31:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:31:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:39,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 547 transitions, 8945 flow. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:39,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:39,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:42,294 INFO L124 PetriNetUnfolderBase]: 4132/7485 cut-off events. [2024-05-12 13:31:42,294 INFO L125 PetriNetUnfolderBase]: For 613278/613278 co-relation queries the response was YES. [2024-05-12 13:31:42,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47952 conditions, 7485 events. 4132/7485 cut-off events. For 613278/613278 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 57282 event pairs, 1519 based on Foata normal form. 6/7311 useless extension candidates. Maximal degree in co-relation 47710. Up to 5389 conditions per place. [2024-05-12 13:31:42,406 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 402 selfloop transitions, 178 changer transitions 0/587 dead transitions. [2024-05-12 13:31:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 587 transitions, 10482 flow [2024-05-12 13:31:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:31:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:31:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-05-12 13:31:42,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-05-12 13:31:42,407 INFO L175 Difference]: Start difference. First operand has 481 places, 547 transitions, 8945 flow. Second operand 11 states and 179 transitions. [2024-05-12 13:31:42,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 587 transitions, 10482 flow [2024-05-12 13:31:47,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 587 transitions, 9577 flow, removed 428 selfloop flow, removed 4 redundant places. [2024-05-12 13:31:47,980 INFO L231 Difference]: Finished difference. Result has 489 places, 549 transitions, 8689 flow [2024-05-12 13:31:47,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8040, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8689, PETRI_PLACES=489, PETRI_TRANSITIONS=549} [2024-05-12 13:31:47,980 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-05-12 13:31:47,981 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 549 transitions, 8689 flow [2024-05-12 13:31:47,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:47,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:47,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:47,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-05-12 13:31:47,981 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:47,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash -791713486, now seen corresponding path program 3 times [2024-05-12 13:31:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:47,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153218580] [2024-05-12 13:31:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:47,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153218580] [2024-05-12 13:31:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153218580] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:31:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494280480] [2024-05-12 13:31:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:31:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:31:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:31:49,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 549 transitions, 8689 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:49,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:49,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:49,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:31:51,690 INFO L124 PetriNetUnfolderBase]: 4619/8327 cut-off events. [2024-05-12 13:31:51,690 INFO L125 PetriNetUnfolderBase]: For 607290/607290 co-relation queries the response was YES. [2024-05-12 13:31:51,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52860 conditions, 8327 events. 4619/8327 cut-off events. For 607290/607290 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 64486 event pairs, 1729 based on Foata normal form. 6/8115 useless extension candidates. Maximal degree in co-relation 52615. Up to 7114 conditions per place. [2024-05-12 13:31:51,820 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 526 selfloop transitions, 125 changer transitions 0/658 dead transitions. [2024-05-12 13:31:51,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 658 transitions, 11187 flow [2024-05-12 13:31:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:31:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:31:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-05-12 13:31:51,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-05-12 13:31:51,821 INFO L175 Difference]: Start difference. First operand has 489 places, 549 transitions, 8689 flow. Second operand 12 states and 189 transitions. [2024-05-12 13:31:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 658 transitions, 11187 flow [2024-05-12 13:31:58,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 658 transitions, 10708 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-05-12 13:31:58,336 INFO L231 Difference]: Finished difference. Result has 498 places, 606 transitions, 9559 flow [2024-05-12 13:31:58,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8283, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9559, PETRI_PLACES=498, PETRI_TRANSITIONS=606} [2024-05-12 13:31:58,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-05-12 13:31:58,336 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 606 transitions, 9559 flow [2024-05-12 13:31:58,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:58,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:31:58,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:31:58,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-05-12 13:31:58,337 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:31:58,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:31:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash 813282232, now seen corresponding path program 4 times [2024-05-12 13:31:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:31:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244888836] [2024-05-12 13:31:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:31:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:31:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:31:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:31:59,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:31:59,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244888836] [2024-05-12 13:31:59,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244888836] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:31:59,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:31:59,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:31:59,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835044068] [2024-05-12 13:31:59,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:31:59,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:31:59,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:31:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:31:59,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:31:59,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:31:59,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 606 transitions, 9559 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:31:59,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:31:59,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:31:59,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:02,729 INFO L124 PetriNetUnfolderBase]: 4655/8403 cut-off events. [2024-05-12 13:32:02,729 INFO L125 PetriNetUnfolderBase]: For 614672/614672 co-relation queries the response was YES. [2024-05-12 13:32:02,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53627 conditions, 8403 events. 4655/8403 cut-off events. For 614672/614672 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 65204 event pairs, 1833 based on Foata normal form. 6/8188 useless extension candidates. Maximal degree in co-relation 53376. Up to 7560 conditions per place. [2024-05-12 13:32:02,844 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 528 selfloop transitions, 110 changer transitions 0/645 dead transitions. [2024-05-12 13:32:02,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 645 transitions, 11177 flow [2024-05-12 13:32:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-05-12 13:32:02,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-05-12 13:32:02,845 INFO L175 Difference]: Start difference. First operand has 498 places, 606 transitions, 9559 flow. Second operand 12 states and 184 transitions. [2024-05-12 13:32:02,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 645 transitions, 11177 flow [2024-05-12 13:32:09,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 645 transitions, 10942 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-05-12 13:32:09,270 INFO L231 Difference]: Finished difference. Result has 506 places, 607 transitions, 9705 flow [2024-05-12 13:32:09,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9324, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9705, PETRI_PLACES=506, PETRI_TRANSITIONS=607} [2024-05-12 13:32:09,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-05-12 13:32:09,270 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 607 transitions, 9705 flow [2024-05-12 13:32:09,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:09,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:09,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:09,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-05-12 13:32:09,271 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -786149296, now seen corresponding path program 5 times [2024-05-12 13:32:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718907174] [2024-05-12 13:32:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718907174] [2024-05-12 13:32:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718907174] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:32:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58515225] [2024-05-12 13:32:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:32:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:32:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:32:10,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:32:10,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 607 transitions, 9705 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:10,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:10,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:32:10,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:13,655 INFO L124 PetriNetUnfolderBase]: 4691/8476 cut-off events. [2024-05-12 13:32:13,655 INFO L125 PetriNetUnfolderBase]: For 613841/613841 co-relation queries the response was YES. [2024-05-12 13:32:13,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53923 conditions, 8476 events. 4691/8476 cut-off events. For 613841/613841 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 65997 event pairs, 1897 based on Foata normal form. 6/8256 useless extension candidates. Maximal degree in co-relation 53671. Up to 7822 conditions per place. [2024-05-12 13:32:13,766 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 531 selfloop transitions, 106 changer transitions 0/644 dead transitions. [2024-05-12 13:32:13,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 644 transitions, 11259 flow [2024-05-12 13:32:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-05-12 13:32:13,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-05-12 13:32:13,767 INFO L175 Difference]: Start difference. First operand has 506 places, 607 transitions, 9705 flow. Second operand 12 states and 180 transitions. [2024-05-12 13:32:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 644 transitions, 11259 flow [2024-05-12 13:32:21,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 644 transitions, 10892 flow, removed 75 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:21,327 INFO L231 Difference]: Finished difference. Result has 508 places, 608 transitions, 9665 flow [2024-05-12 13:32:21,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9338, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9665, PETRI_PLACES=508, PETRI_TRANSITIONS=608} [2024-05-12 13:32:21,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-05-12 13:32:21,328 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 608 transitions, 9665 flow [2024-05-12 13:32:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:21,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:21,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:21,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-05-12 13:32:21,328 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:21,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:21,328 INFO L85 PathProgramCache]: Analyzing trace with hash -543398896, now seen corresponding path program 6 times [2024-05-12 13:32:21,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:21,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901430439] [2024-05-12 13:32:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901430439] [2024-05-12 13:32:22,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901430439] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:22,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:22,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:32:22,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959454036] [2024-05-12 13:32:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:32:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:22,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:32:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:32:22,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:32:22,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 608 transitions, 9665 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:22,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:22,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:32:22,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:26,029 INFO L124 PetriNetUnfolderBase]: 4727/8543 cut-off events. [2024-05-12 13:32:26,030 INFO L125 PetriNetUnfolderBase]: For 610986/610986 co-relation queries the response was YES. [2024-05-12 13:32:26,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54018 conditions, 8543 events. 4727/8543 cut-off events. For 610986/610986 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 66614 event pairs, 1916 based on Foata normal form. 6/8320 useless extension candidates. Maximal degree in co-relation 53765. Up to 7625 conditions per place. [2024-05-12 13:32:26,150 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 523 selfloop transitions, 114 changer transitions 0/644 dead transitions. [2024-05-12 13:32:26,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 644 transitions, 11219 flow [2024-05-12 13:32:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-05-12 13:32:26,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-05-12 13:32:26,151 INFO L175 Difference]: Start difference. First operand has 508 places, 608 transitions, 9665 flow. Second operand 12 states and 186 transitions. [2024-05-12 13:32:26,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 644 transitions, 11219 flow [2024-05-12 13:32:33,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 644 transitions, 10908 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:33,282 INFO L231 Difference]: Finished difference. Result has 510 places, 609 transitions, 9699 flow [2024-05-12 13:32:33,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9354, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9699, PETRI_PLACES=510, PETRI_TRANSITIONS=609} [2024-05-12 13:32:33,283 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 468 predicate places. [2024-05-12 13:32:33,283 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 609 transitions, 9699 flow [2024-05-12 13:32:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:33,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:33,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:33,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-05-12 13:32:33,283 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:33,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -543600706, now seen corresponding path program 7 times [2024-05-12 13:32:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725176696] [2024-05-12 13:32:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:34,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725176696] [2024-05-12 13:32:34,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725176696] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:34,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:34,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:32:34,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257442157] [2024-05-12 13:32:34,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:34,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:32:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:32:34,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:32:34,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:32:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 609 transitions, 9699 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:34,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:34,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:32:34,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:38,010 INFO L124 PetriNetUnfolderBase]: 4763/8615 cut-off events. [2024-05-12 13:32:38,010 INFO L125 PetriNetUnfolderBase]: For 627787/627787 co-relation queries the response was YES. [2024-05-12 13:32:38,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54544 conditions, 8615 events. 4763/8615 cut-off events. For 627787/627787 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 67366 event pairs, 1918 based on Foata normal form. 6/8394 useless extension candidates. Maximal degree in co-relation 54290. Up to 7609 conditions per place. [2024-05-12 13:32:38,154 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 520 selfloop transitions, 120 changer transitions 0/647 dead transitions. [2024-05-12 13:32:38,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 647 transitions, 11321 flow [2024-05-12 13:32:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-05-12 13:32:38,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-05-12 13:32:38,155 INFO L175 Difference]: Start difference. First operand has 510 places, 609 transitions, 9699 flow. Second operand 12 states and 190 transitions. [2024-05-12 13:32:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 647 transitions, 11321 flow [2024-05-12 13:32:45,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 647 transitions, 10992 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:45,080 INFO L231 Difference]: Finished difference. Result has 512 places, 610 transitions, 9773 flow [2024-05-12 13:32:45,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9370, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9773, PETRI_PLACES=512, PETRI_TRANSITIONS=610} [2024-05-12 13:32:45,081 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 470 predicate places. [2024-05-12 13:32:45,081 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 610 transitions, 9773 flow [2024-05-12 13:32:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:45,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:45,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-05-12 13:32:45,081 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:45,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1262630972, now seen corresponding path program 8 times [2024-05-12 13:32:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759207382] [2024-05-12 13:32:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:46,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759207382] [2024-05-12 13:32:46,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759207382] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:46,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:32:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948002360] [2024-05-12 13:32:46,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:46,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:32:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:32:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:32:46,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:32:46,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 610 transitions, 9773 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:46,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:46,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:32:46,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:32:49,567 INFO L124 PetriNetUnfolderBase]: 4799/8687 cut-off events. [2024-05-12 13:32:49,568 INFO L125 PetriNetUnfolderBase]: For 635314/635314 co-relation queries the response was YES. [2024-05-12 13:32:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54901 conditions, 8687 events. 4799/8687 cut-off events. For 635314/635314 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 68008 event pairs, 1916 based on Foata normal form. 6/8465 useless extension candidates. Maximal degree in co-relation 54646. Up to 7548 conditions per place. [2024-05-12 13:32:49,687 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 505 selfloop transitions, 138 changer transitions 0/650 dead transitions. [2024-05-12 13:32:49,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 650 transitions, 11373 flow [2024-05-12 13:32:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:32:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:32:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-05-12 13:32:49,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-05-12 13:32:49,688 INFO L175 Difference]: Start difference. First operand has 512 places, 610 transitions, 9773 flow. Second operand 12 states and 189 transitions. [2024-05-12 13:32:49,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 650 transitions, 11373 flow [2024-05-12 13:32:57,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 650 transitions, 10984 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-05-12 13:32:57,374 INFO L231 Difference]: Finished difference. Result has 514 places, 611 transitions, 9779 flow [2024-05-12 13:32:57,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9384, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9779, PETRI_PLACES=514, PETRI_TRANSITIONS=611} [2024-05-12 13:32:57,374 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-05-12 13:32:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 611 transitions, 9779 flow [2024-05-12 13:32:57,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:57,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:32:57,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:32:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-05-12 13:32:57,374 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:32:57,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:32:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1006130462, now seen corresponding path program 9 times [2024-05-12 13:32:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:32:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046542092] [2024-05-12 13:32:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:32:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:32:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:32:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:32:58,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:32:58,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046542092] [2024-05-12 13:32:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046542092] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:32:58,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:32:58,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:32:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492864048] [2024-05-12 13:32:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:32:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:32:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:32:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:32:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:32:58,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:32:58,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 611 transitions, 9779 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:32:58,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:32:58,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:32:58,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:02,084 INFO L124 PetriNetUnfolderBase]: 4835/8759 cut-off events. [2024-05-12 13:33:02,084 INFO L125 PetriNetUnfolderBase]: For 632595/632595 co-relation queries the response was YES. [2024-05-12 13:33:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55157 conditions, 8759 events. 4835/8759 cut-off events. For 632595/632595 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 68829 event pairs, 1958 based on Foata normal form. 6/8536 useless extension candidates. Maximal degree in co-relation 54901. Up to 7841 conditions per place. [2024-05-12 13:33:02,201 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 510 selfloop transitions, 130 changer transitions 0/647 dead transitions. [2024-05-12 13:33:02,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 647 transitions, 11343 flow [2024-05-12 13:33:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:33:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:33:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-05-12 13:33:02,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-05-12 13:33:02,202 INFO L175 Difference]: Start difference. First operand has 514 places, 611 transitions, 9779 flow. Second operand 12 states and 184 transitions. [2024-05-12 13:33:02,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 647 transitions, 11343 flow [2024-05-12 13:33:09,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 647 transitions, 10964 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:09,018 INFO L231 Difference]: Finished difference. Result has 516 places, 612 transitions, 9781 flow [2024-05-12 13:33:09,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9400, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9781, PETRI_PLACES=516, PETRI_TRANSITIONS=612} [2024-05-12 13:33:09,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-05-12 13:33:09,019 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 612 transitions, 9781 flow [2024-05-12 13:33:09,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:09,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:09,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-05-12 13:33:09,019 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:09,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1005928652, now seen corresponding path program 10 times [2024-05-12 13:33:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782068147] [2024-05-12 13:33:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:10,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782068147] [2024-05-12 13:33:10,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782068147] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:10,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:10,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:33:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549774650] [2024-05-12 13:33:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:33:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:33:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:33:10,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:33:10,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 612 transitions, 9781 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:10,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:10,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:33:10,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:13,423 INFO L124 PetriNetUnfolderBase]: 4871/8831 cut-off events. [2024-05-12 13:33:13,423 INFO L125 PetriNetUnfolderBase]: For 648598/648598 co-relation queries the response was YES. [2024-05-12 13:33:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55561 conditions, 8831 events. 4871/8831 cut-off events. For 648598/648598 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 69590 event pairs, 1814 based on Foata normal form. 6/8628 useless extension candidates. Maximal degree in co-relation 55304. Up to 7103 conditions per place. [2024-05-12 13:33:13,544 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 458 selfloop transitions, 182 changer transitions 0/647 dead transitions. [2024-05-12 13:33:13,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 647 transitions, 11391 flow [2024-05-12 13:33:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 13:33:13,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-05-12 13:33:13,546 INFO L175 Difference]: Start difference. First operand has 516 places, 612 transitions, 9781 flow. Second operand 11 states and 173 transitions. [2024-05-12 13:33:13,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 647 transitions, 11391 flow [2024-05-12 13:33:20,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 647 transitions, 11019 flow, removed 54 selfloop flow, removed 10 redundant places. [2024-05-12 13:33:20,455 INFO L231 Difference]: Finished difference. Result has 517 places, 613 transitions, 9946 flow [2024-05-12 13:33:20,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9409, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9946, PETRI_PLACES=517, PETRI_TRANSITIONS=613} [2024-05-12 13:33:20,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-05-12 13:33:20,455 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 613 transitions, 9946 flow [2024-05-12 13:33:20,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:20,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:20,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-05-12 13:33:20,455 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:20,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1763837892, now seen corresponding path program 11 times [2024-05-12 13:33:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711463807] [2024-05-12 13:33:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:21,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711463807] [2024-05-12 13:33:21,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711463807] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:21,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:21,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 13:33:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526012204] [2024-05-12 13:33:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:21,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 13:33:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 13:33:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-05-12 13:33:21,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:33:21,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 613 transitions, 9946 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:21,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:21,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:33:21,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:33:24,825 INFO L124 PetriNetUnfolderBase]: 4864/8818 cut-off events. [2024-05-12 13:33:24,826 INFO L125 PetriNetUnfolderBase]: For 561537/561537 co-relation queries the response was YES. [2024-05-12 13:33:24,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54634 conditions, 8818 events. 4864/8818 cut-off events. For 561537/561537 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 69464 event pairs, 1861 based on Foata normal form. 6/8603 useless extension candidates. Maximal degree in co-relation 54376. Up to 7388 conditions per place. [2024-05-12 13:33:24,940 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 475 selfloop transitions, 163 changer transitions 0/645 dead transitions. [2024-05-12 13:33:24,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 645 transitions, 11378 flow [2024-05-12 13:33:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:33:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:33:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 13:33:24,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-05-12 13:33:24,942 INFO L175 Difference]: Start difference. First operand has 517 places, 613 transitions, 9946 flow. Second operand 11 states and 170 transitions. [2024-05-12 13:33:24,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 645 transitions, 11378 flow [2024-05-12 13:33:31,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 645 transitions, 10702 flow, removed 120 selfloop flow, removed 9 redundant places. [2024-05-12 13:33:31,018 INFO L231 Difference]: Finished difference. Result has 519 places, 613 transitions, 9613 flow [2024-05-12 13:33:31,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9270, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9613, PETRI_PLACES=519, PETRI_TRANSITIONS=613} [2024-05-12 13:33:31,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-05-12 13:33:31,019 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 613 transitions, 9613 flow [2024-05-12 13:33:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:31,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:33:31,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:33:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-05-12 13:33:31,019 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:33:31,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:33:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash 973092874, now seen corresponding path program 12 times [2024-05-12 13:33:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:33:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112694212] [2024-05-12 13:33:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:33:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:33:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:33:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:33:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:33:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112694212] [2024-05-12 13:33:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112694212] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:33:32,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:33:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 13:33:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529624291] [2024-05-12 13:33:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:33:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 13:33:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:33:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 13:33:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-05-12 13:33:32,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 13:33:32,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 613 transitions, 9613 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:33:32,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:33:32,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 13:33:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand