./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_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.2024-06-19_11-23-25.files/protection/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix045_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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:35:11,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:35:12,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:35:12,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:35:12,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:35:12,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:35:12,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:35:12,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:35:12,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:35:12,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:35:12,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:35:12,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:35:12,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:35:12,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:35:12,127 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:35:12,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:35:12,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:35:12,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:35:12,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:35:12,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:35:12,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:35:12,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:35:12,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:35:12,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:35:12,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:35:12,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:35:12,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:35:12,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:35:12,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:35:12,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:35:12,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:35:12,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:35:12,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:35:12,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:35:12,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:35:12,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:35:12,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:35:12,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:35:12,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:35:12,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:35:12,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:35:12,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:35:12,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:35:12,136 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:35:12,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:35:12,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:35:12,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:35:12,421 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:35:12,421 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:35:12,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:35:12,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:35:12,626 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:35:12,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:35:13,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:35:14,072 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:35:14,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:35:14,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5a57a0f/1278529df38e48a2a5a83a60924ecd51/FLAG09f0c0fad [2024-06-27 18:35:14,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5a57a0f/1278529df38e48a2a5a83a60924ecd51 [2024-06-27 18:35:14,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:35:14,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:35:14,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:35:14,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:35:14,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:35:14,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:12" (1/2) ... [2024-06-27 18:35:14,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d32f76 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:14, skipping insertion in model container [2024-06-27 18:35:14,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:12" (1/2) ... [2024-06-27 18:35:14,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44fcd05d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:14, skipping insertion in model container [2024-06-27 18:35:14,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:35:14" (2/2) ... [2024-06-27 18:35:14,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d32f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14, skipping insertion in model container [2024-06-27 18:35:14,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:35:14" (2/2) ... [2024-06-27 18:35:14,113 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:35:14,219 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:35:14,221 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ((((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-27 18:35:14,221 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ((((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-27 18:35:14,221 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-27 18:35:14,221 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:35:14,222 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 18:35:14,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:35:14,478 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-27 18:35:14,753 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:35:14,763 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:35:14,803 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:35:14,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:35:14,931 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:35:14,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14 WrapperNode [2024-06-27 18:35:14,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:35:14,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:35:14,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:35:14,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:35:14,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:14,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,026 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-06-27 18:35:15,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:35:15,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:35:15,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:35:15,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:35:15,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,072 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:35:15,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:35:15,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:35:15,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:35:15,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:35:15,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (1/1) ... [2024-06-27 18:35:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:35:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:35:15,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:35:15,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:35:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:35:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:35:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:35:15,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:35:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:35:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:35:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:35:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:35:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:35:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:35:15,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:35:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:35:15,198 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:35:15,344 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:35:15,346 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:35:15,757 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:35:15,757 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:35:15,918 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:35:15,918 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:35:15,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:35:15 BoogieIcfgContainer [2024-06-27 18:35:15,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:35:15,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:35:15,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:35:15,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:35:15,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:12" (1/4) ... [2024-06-27 18:35:15,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40926d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:35:15, skipping insertion in model container [2024-06-27 18:35:15,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:35:14" (2/4) ... [2024-06-27 18:35:15,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40926d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:35:15, skipping insertion in model container [2024-06-27 18:35:15,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:14" (3/4) ... [2024-06-27 18:35:15,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40926d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:35:15, skipping insertion in model container [2024-06-27 18:35:15,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:35:15" (4/4) ... [2024-06-27 18:35:15,931 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:35:15,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:35:15,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:35:15,950 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:35:16,000 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:35:16,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:35:16,067 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:35:16,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:35:16,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:35:16,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:35:16,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:35:16,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:35:16,090 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;@4f2a0e1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:35:16,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:35:16,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:35:16,100 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:35:16,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:35:16,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:16,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:35:16,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:16,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 351715282, now seen corresponding path program 1 times [2024-06-27 18:35:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4701087] [2024-06-27 18:35:16,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:16,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:17,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4701087] [2024-06-27 18:35:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4701087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:17,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:17,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:35:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472325624] [2024-06-27 18:35:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:17,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:35:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:35:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:35:17,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:35:17,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:17,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:35:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:18,221 INFO L124 PetriNetUnfolderBase]: 4180/6823 cut-off events. [2024-06-27 18:35:18,222 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:35:18,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12898 conditions, 6823 events. 4180/6823 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44450 event pairs, 3456 based on Foata normal form. 211/6486 useless extension candidates. Maximal degree in co-relation 12886. Up to 5985 conditions per place. [2024-06-27 18:35:18,277 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:35:18,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 231 flow [2024-06-27 18:35:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:35:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:35:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 18:35:18,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-06-27 18:35:18,293 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 98 transitions. [2024-06-27 18:35:18,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 231 flow [2024-06-27 18:35:18,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:18,303 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:35:18,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:35:18,310 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:35:18,310 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:35:18,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:18,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:18,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:35:18,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:18,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1303996367, now seen corresponding path program 1 times [2024-06-27 18:35:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:18,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249795290] [2024-06-27 18:35:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:19,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:19,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249795290] [2024-06-27 18:35:19,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249795290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:19,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:19,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:35:19,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996245016] [2024-06-27 18:35:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:19,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:35:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:35:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:35:19,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:19,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:19,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:19,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:19,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:19,926 INFO L124 PetriNetUnfolderBase]: 4775/7040 cut-off events. [2024-06-27 18:35:19,926 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2024-06-27 18:35:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15474 conditions, 7040 events. 4775/7040 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 39931 event pairs, 2525 based on Foata normal form. 3/6769 useless extension candidates. Maximal degree in co-relation 15462. Up to 6792 conditions per place. [2024-06-27 18:35:19,971 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-27 18:35:19,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 331 flow [2024-06-27 18:35:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:35:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:35:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-27 18:35:19,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 18:35:19,974 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 124 transitions. [2024-06-27 18:35:19,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 331 flow [2024-06-27 18:35:19,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:19,979 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-27 18:35:19,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:35:19,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:35:19,980 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-27 18:35:19,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:19,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:19,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:19,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:35:19,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:19,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1769180589, now seen corresponding path program 1 times [2024-06-27 18:35:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:19,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449054752] [2024-06-27 18:35:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449054752] [2024-06-27 18:35:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449054752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:20,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:20,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:35:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609415064] [2024-06-27 18:35:20,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:20,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:35:20,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:20,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:35:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:35:20,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:20,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:20,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:20,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:20,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:21,712 INFO L124 PetriNetUnfolderBase]: 4805/7675 cut-off events. [2024-06-27 18:35:21,713 INFO L125 PetriNetUnfolderBase]: For 2872/2872 co-relation queries the response was YES. [2024-06-27 18:35:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17673 conditions, 7675 events. 4805/7675 cut-off events. For 2872/2872 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49029 event pairs, 2769 based on Foata normal form. 5/7172 useless extension candidates. Maximal degree in co-relation 17659. Up to 6710 conditions per place. [2024-06-27 18:35:21,763 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 74 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-27 18:35:21,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 535 flow [2024-06-27 18:35:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-27 18:35:21,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 18:35:21,766 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 162 transitions. [2024-06-27 18:35:21,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 535 flow [2024-06-27 18:35:21,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 106 transitions, 516 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:21,770 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 306 flow [2024-06-27 18:35:21,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-06-27 18:35:21,771 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 18:35:21,772 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 306 flow [2024-06-27 18:35:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:21,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:21,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:21,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:35:21,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:21,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:21,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1481630770, now seen corresponding path program 1 times [2024-06-27 18:35:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:21,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206157712] [2024-06-27 18:35:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206157712] [2024-06-27 18:35:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206157712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655562366] [2024-06-27 18:35:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:22,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:22,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:22,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:22,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:22,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:22,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:23,773 INFO L124 PetriNetUnfolderBase]: 4856/7729 cut-off events. [2024-06-27 18:35:23,774 INFO L125 PetriNetUnfolderBase]: For 7081/7084 co-relation queries the response was YES. [2024-06-27 18:35:23,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20708 conditions, 7729 events. 4856/7729 cut-off events. For 7081/7084 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49239 event pairs, 2205 based on Foata normal form. 12/7224 useless extension candidates. Maximal degree in co-relation 20691. Up to 6687 conditions per place. [2024-06-27 18:35:23,828 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-06-27 18:35:23,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 680 flow [2024-06-27 18:35:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 18:35:23,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 18:35:23,831 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 306 flow. Second operand 6 states and 189 transitions. [2024-06-27 18:35:23,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 680 flow [2024-06-27 18:35:23,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 668 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:35:23,839 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 381 flow [2024-06-27 18:35:23,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-27 18:35:23,841 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 18:35:23,841 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 381 flow [2024-06-27 18:35:23,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:23,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:23,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:35:23,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:23,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash -10719685, now seen corresponding path program 1 times [2024-06-27 18:35:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930570813] [2024-06-27 18:35:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930570813] [2024-06-27 18:35:24,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930570813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:24,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:24,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289976491] [2024-06-27 18:35:24,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:24,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:24,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:24,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:24,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:35:24,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:24,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:24,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:35:24,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:25,515 INFO L124 PetriNetUnfolderBase]: 4782/7226 cut-off events. [2024-06-27 18:35:25,516 INFO L125 PetriNetUnfolderBase]: For 8983/8983 co-relation queries the response was YES. [2024-06-27 18:35:25,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21766 conditions, 7226 events. 4782/7226 cut-off events. For 8983/8983 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42738 event pairs, 1513 based on Foata normal form. 2/6880 useless extension candidates. Maximal degree in co-relation 21745. Up to 6800 conditions per place. [2024-06-27 18:35:25,575 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 72 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-06-27 18:35:25,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 597 flow [2024-06-27 18:35:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 18:35:25,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-06-27 18:35:25,577 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 381 flow. Second operand 5 states and 131 transitions. [2024-06-27 18:35:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 597 flow [2024-06-27 18:35:25,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 528 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:25,659 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 341 flow [2024-06-27 18:35:25,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-27 18:35:25,660 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 18:35:25,660 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 341 flow [2024-06-27 18:35:25,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:25,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:25,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:25,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:35:25,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:25,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash -332799365, now seen corresponding path program 1 times [2024-06-27 18:35:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417830845] [2024-06-27 18:35:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417830845] [2024-06-27 18:35:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417830845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738125918] [2024-06-27 18:35:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:26,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:26,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:35:26,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:26,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:26,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:35:26,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:27,672 INFO L124 PetriNetUnfolderBase]: 4770/7738 cut-off events. [2024-06-27 18:35:27,673 INFO L125 PetriNetUnfolderBase]: For 10233/10233 co-relation queries the response was YES. [2024-06-27 18:35:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21893 conditions, 7738 events. 4770/7738 cut-off events. For 10233/10233 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50342 event pairs, 1994 based on Foata normal form. 4/7230 useless extension candidates. Maximal degree in co-relation 21870. Up to 6763 conditions per place. [2024-06-27 18:35:27,720 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-06-27 18:35:27,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 109 transitions, 707 flow [2024-06-27 18:35:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:35:27,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:35:27,722 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 341 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:35:27,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 109 transitions, 707 flow [2024-06-27 18:35:27,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 654 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:27,733 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 480 flow [2024-06-27 18:35:27,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2024-06-27 18:35:27,736 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 18:35:27,736 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 480 flow [2024-06-27 18:35:27,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:27,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:27,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:27,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:35:27,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:27,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -347618796, now seen corresponding path program 1 times [2024-06-27 18:35:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:27,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505659644] [2024-06-27 18:35:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:27,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505659644] [2024-06-27 18:35:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505659644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:27,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:35:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512426633] [2024-06-27 18:35:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:27,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:35:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:35:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:35:27,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 18:35:27,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:27,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:27,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 18:35:27,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:28,161 INFO L124 PetriNetUnfolderBase]: 1362/2953 cut-off events. [2024-06-27 18:35:28,161 INFO L125 PetriNetUnfolderBase]: For 4027/4327 co-relation queries the response was YES. [2024-06-27 18:35:28,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 2953 events. 1362/2953 cut-off events. For 4027/4327 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23827 event pairs, 423 based on Foata normal form. 16/2698 useless extension candidates. Maximal degree in co-relation 7052. Up to 1707 conditions per place. [2024-06-27 18:35:28,185 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 30 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-06-27 18:35:28,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 498 flow [2024-06-27 18:35:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:35:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:35:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 18:35:28,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 18:35:28,187 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 480 flow. Second operand 3 states and 108 transitions. [2024-06-27 18:35:28,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 498 flow [2024-06-27 18:35:28,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 484 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:28,193 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 404 flow [2024-06-27 18:35:28,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-27 18:35:28,195 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 18:35:28,196 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 404 flow [2024-06-27 18:35:28,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:28,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:28,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:28,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:35:28,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:28,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1717789798, now seen corresponding path program 1 times [2024-06-27 18:35:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614684138] [2024-06-27 18:35:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614684138] [2024-06-27 18:35:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614684138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586038430] [2024-06-27 18:35:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:28,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:28,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 404 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:28,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:28,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:29,984 INFO L124 PetriNetUnfolderBase]: 4775/7241 cut-off events. [2024-06-27 18:35:29,984 INFO L125 PetriNetUnfolderBase]: For 14904/14913 co-relation queries the response was YES. [2024-06-27 18:35:29,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22096 conditions, 7241 events. 4775/7241 cut-off events. For 14904/14913 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42559 event pairs, 1568 based on Foata normal form. 10/7192 useless extension candidates. Maximal degree in co-relation 22070. Up to 6645 conditions per place. [2024-06-27 18:35:30,022 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 24 changer transitions 4/114 dead transitions. [2024-06-27 18:35:30,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 750 flow [2024-06-27 18:35:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-27 18:35:30,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 18:35:30,027 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 404 flow. Second operand 6 states and 158 transitions. [2024-06-27 18:35:30,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 750 flow [2024-06-27 18:35:30,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:30,037 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 462 flow [2024-06-27 18:35:30,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-06-27 18:35:30,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-27 18:35:30,041 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 462 flow [2024-06-27 18:35:30,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:30,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:30,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:30,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:35:30,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:30,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1711659238, now seen corresponding path program 2 times [2024-06-27 18:35:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20122705] [2024-06-27 18:35:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:30,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20122705] [2024-06-27 18:35:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20122705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:30,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481647823] [2024-06-27 18:35:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:30,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:30,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 462 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:30,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:30,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:30,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:31,563 INFO L124 PetriNetUnfolderBase]: 4229/6438 cut-off events. [2024-06-27 18:35:31,563 INFO L125 PetriNetUnfolderBase]: For 14354/14358 co-relation queries the response was YES. [2024-06-27 18:35:31,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20015 conditions, 6438 events. 4229/6438 cut-off events. For 14354/14358 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37284 event pairs, 1415 based on Foata normal form. 3/6378 useless extension candidates. Maximal degree in co-relation 19987. Up to 5897 conditions per place. [2024-06-27 18:35:31,608 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 72 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-06-27 18:35:31,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 730 flow [2024-06-27 18:35:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:35:31,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:31,610 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 462 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:35:31,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 730 flow [2024-06-27 18:35:31,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 693 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:31,626 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 484 flow [2024-06-27 18:35:31,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-27 18:35:31,627 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-27 18:35:31,627 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 484 flow [2024-06-27 18:35:31,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:31,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:31,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:31,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:35:31,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:31,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -407565412, now seen corresponding path program 1 times [2024-06-27 18:35:31,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:31,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535341458] [2024-06-27 18:35:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:32,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535341458] [2024-06-27 18:35:32,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535341458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:32,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:32,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315067198] [2024-06-27 18:35:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:32,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:32,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:32,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 484 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:32,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:32,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:32,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:33,318 INFO L124 PetriNetUnfolderBase]: 4563/7271 cut-off events. [2024-06-27 18:35:33,319 INFO L125 PetriNetUnfolderBase]: For 18550/18550 co-relation queries the response was YES. [2024-06-27 18:35:33,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22648 conditions, 7271 events. 4563/7271 cut-off events. For 18550/18550 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 44874 event pairs, 1457 based on Foata normal form. 8/7076 useless extension candidates. Maximal degree in co-relation 22619. Up to 5975 conditions per place. [2024-06-27 18:35:33,368 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 118 selfloop transitions, 47 changer transitions 0/174 dead transitions. [2024-06-27 18:35:33,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 174 transitions, 1396 flow [2024-06-27 18:35:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:35:33,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 18:35:33,370 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 484 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:35:33,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 174 transitions, 1396 flow [2024-06-27 18:35:33,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 1209 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:33,389 INFO L231 Difference]: Finished difference. Result has 83 places, 111 transitions, 784 flow [2024-06-27 18:35:33,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=83, PETRI_TRANSITIONS=111} [2024-06-27 18:35:33,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 18:35:33,391 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 111 transitions, 784 flow [2024-06-27 18:35:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:33,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:33,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:33,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:35:33,391 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:33,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1267921628, now seen corresponding path program 2 times [2024-06-27 18:35:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:33,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889317962] [2024-06-27 18:35:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889317962] [2024-06-27 18:35:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889317962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:34,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916219887] [2024-06-27 18:35:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:34,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:34,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 111 transitions, 784 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:34,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:34,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:34,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:35,212 INFO L124 PetriNetUnfolderBase]: 4715/7477 cut-off events. [2024-06-27 18:35:35,213 INFO L125 PetriNetUnfolderBase]: For 24283/24285 co-relation queries the response was YES. [2024-06-27 18:35:35,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25919 conditions, 7477 events. 4715/7477 cut-off events. For 24283/24285 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45867 event pairs, 1479 based on Foata normal form. 12/7286 useless extension candidates. Maximal degree in co-relation 25886. Up to 6079 conditions per place. [2024-06-27 18:35:35,258 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 105 selfloop transitions, 59 changer transitions 0/173 dead transitions. [2024-06-27 18:35:35,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 173 transitions, 1439 flow [2024-06-27 18:35:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 18:35:35,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:35:35,260 INFO L175 Difference]: Start difference. First operand has 83 places, 111 transitions, 784 flow. Second operand 7 states and 180 transitions. [2024-06-27 18:35:35,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 173 transitions, 1439 flow [2024-06-27 18:35:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 173 transitions, 1379 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:35,285 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 1044 flow [2024-06-27 18:35:35,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1044, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-06-27 18:35:35,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 18:35:35,286 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 1044 flow [2024-06-27 18:35:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:35,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:35,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:35:35,287 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:35,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1521821336, now seen corresponding path program 3 times [2024-06-27 18:35:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656662068] [2024-06-27 18:35:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656662068] [2024-06-27 18:35:35,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656662068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:35,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:35,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:35,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685051890] [2024-06-27 18:35:35,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:35,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:35,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:35,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:36,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:36,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 1044 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:36,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:36,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:36,981 INFO L124 PetriNetUnfolderBase]: 4791/7586 cut-off events. [2024-06-27 18:35:36,982 INFO L125 PetriNetUnfolderBase]: For 29139/29145 co-relation queries the response was YES. [2024-06-27 18:35:37,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27873 conditions, 7586 events. 4791/7586 cut-off events. For 29139/29145 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 46513 event pairs, 1474 based on Foata normal form. 7/7379 useless extension candidates. Maximal degree in co-relation 27837. Up to 6117 conditions per place. [2024-06-27 18:35:37,031 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 103 selfloop transitions, 77 changer transitions 0/189 dead transitions. [2024-06-27 18:35:37,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 189 transitions, 1825 flow [2024-06-27 18:35:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 18:35:37,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:35:37,034 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 1044 flow. Second operand 7 states and 180 transitions. [2024-06-27 18:35:37,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 189 transitions, 1825 flow [2024-06-27 18:35:37,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 189 transitions, 1699 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:37,101 INFO L231 Difference]: Finished difference. Result has 94 places, 144 transitions, 1318 flow [2024-06-27 18:35:37,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1318, PETRI_PLACES=94, PETRI_TRANSITIONS=144} [2024-06-27 18:35:37,103 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-27 18:35:37,103 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 144 transitions, 1318 flow [2024-06-27 18:35:37,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:37,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:37,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:37,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:35:37,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:37,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1445053148, now seen corresponding path program 4 times [2024-06-27 18:35:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839141709] [2024-06-27 18:35:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839141709] [2024-06-27 18:35:37,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839141709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:37,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:37,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33184871] [2024-06-27 18:35:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:37,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:37,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 144 transitions, 1318 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:37,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:37,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:37,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:38,851 INFO L124 PetriNetUnfolderBase]: 4775/7572 cut-off events. [2024-06-27 18:35:38,852 INFO L125 PetriNetUnfolderBase]: For 29944/29950 co-relation queries the response was YES. [2024-06-27 18:35:38,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27836 conditions, 7572 events. 4775/7572 cut-off events. For 29944/29950 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 46444 event pairs, 1495 based on Foata normal form. 7/7365 useless extension candidates. Maximal degree in co-relation 27798. Up to 6110 conditions per place. [2024-06-27 18:35:38,903 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 103 selfloop transitions, 75 changer transitions 0/187 dead transitions. [2024-06-27 18:35:38,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 187 transitions, 1856 flow [2024-06-27 18:35:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:35:38,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 18:35:38,905 INFO L175 Difference]: Start difference. First operand has 94 places, 144 transitions, 1318 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:35:38,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 187 transitions, 1856 flow [2024-06-27 18:35:38,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 187 transitions, 1804 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:38,958 INFO L231 Difference]: Finished difference. Result has 100 places, 144 transitions, 1428 flow [2024-06-27 18:35:38,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1428, PETRI_PLACES=100, PETRI_TRANSITIONS=144} [2024-06-27 18:35:38,959 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 18:35:38,959 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 144 transitions, 1428 flow [2024-06-27 18:35:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:38,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:38,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:35:38,960 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:38,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1992577478, now seen corresponding path program 1 times [2024-06-27 18:35:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543829715] [2024-06-27 18:35:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:40,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543829715] [2024-06-27 18:35:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543829715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491262323] [2024-06-27 18:35:40,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:40,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:40,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:40,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:40,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:35:40,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 144 transitions, 1428 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:40,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:40,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:35:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:41,434 INFO L124 PetriNetUnfolderBase]: 4165/6827 cut-off events. [2024-06-27 18:35:41,435 INFO L125 PetriNetUnfolderBase]: For 29768/29770 co-relation queries the response was YES. [2024-06-27 18:35:41,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25694 conditions, 6827 events. 4165/6827 cut-off events. For 29768/29770 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 43023 event pairs, 1354 based on Foata normal form. 4/6629 useless extension candidates. Maximal degree in co-relation 25653. Up to 5875 conditions per place. [2024-06-27 18:35:41,487 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 153 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2024-06-27 18:35:41,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 180 transitions, 1888 flow [2024-06-27 18:35:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:35:41,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:35:41,489 INFO L175 Difference]: Start difference. First operand has 100 places, 144 transitions, 1428 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:35:41,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 180 transitions, 1888 flow [2024-06-27 18:35:41,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 180 transitions, 1722 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:41,530 INFO L231 Difference]: Finished difference. Result has 102 places, 147 transitions, 1336 flow [2024-06-27 18:35:41,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1336, PETRI_PLACES=102, PETRI_TRANSITIONS=147} [2024-06-27 18:35:41,531 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-27 18:35:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 147 transitions, 1336 flow [2024-06-27 18:35:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:41,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:41,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:35:41,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:41,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 945768648, now seen corresponding path program 1 times [2024-06-27 18:35:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:41,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180069236] [2024-06-27 18:35:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180069236] [2024-06-27 18:35:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180069236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:42,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149616899] [2024-06-27 18:35:42,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:42,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:42,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:42,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:35:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 147 transitions, 1336 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:35:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:43,203 INFO L124 PetriNetUnfolderBase]: 4170/6807 cut-off events. [2024-06-27 18:35:43,204 INFO L125 PetriNetUnfolderBase]: For 31005/31007 co-relation queries the response was YES. [2024-06-27 18:35:43,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25755 conditions, 6807 events. 4170/6807 cut-off events. For 31005/31007 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 42620 event pairs, 1636 based on Foata normal form. 1/6605 useless extension candidates. Maximal degree in co-relation 25713. Up to 5948 conditions per place. [2024-06-27 18:35:43,263 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 150 selfloop transitions, 9 changer transitions 0/169 dead transitions. [2024-06-27 18:35:43,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1768 flow [2024-06-27 18:35:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:35:43,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:35:43,265 INFO L175 Difference]: Start difference. First operand has 102 places, 147 transitions, 1336 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:35:43,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1768 flow [2024-06-27 18:35:43,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 169 transitions, 1712 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:43,302 INFO L231 Difference]: Finished difference. Result has 103 places, 154 transitions, 1391 flow [2024-06-27 18:35:43,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1391, PETRI_PLACES=103, PETRI_TRANSITIONS=154} [2024-06-27 18:35:43,303 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 18:35:43,303 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 154 transitions, 1391 flow [2024-06-27 18:35:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:43,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:43,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:35:43,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:43,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash 650865598, now seen corresponding path program 1 times [2024-06-27 18:35:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313459626] [2024-06-27 18:35:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:44,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313459626] [2024-06-27 18:35:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313459626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912123292] [2024-06-27 18:35:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:44,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:44,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 154 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:44,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:44,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:44,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:45,233 INFO L124 PetriNetUnfolderBase]: 4948/7873 cut-off events. [2024-06-27 18:35:45,233 INFO L125 PetriNetUnfolderBase]: For 42396/42398 co-relation queries the response was YES. [2024-06-27 18:35:45,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31277 conditions, 7873 events. 4948/7873 cut-off events. For 42396/42398 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 48724 event pairs, 1495 based on Foata normal form. 8/7691 useless extension candidates. Maximal degree in co-relation 31233. Up to 6256 conditions per place. [2024-06-27 18:35:45,291 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 120 selfloop transitions, 88 changer transitions 0/217 dead transitions. [2024-06-27 18:35:45,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 217 transitions, 2263 flow [2024-06-27 18:35:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:35:45,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:35:45,294 INFO L175 Difference]: Start difference. First operand has 103 places, 154 transitions, 1391 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:35:45,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 217 transitions, 2263 flow [2024-06-27 18:35:45,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 217 transitions, 2240 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:45,343 INFO L231 Difference]: Finished difference. Result has 109 places, 171 transitions, 1807 flow [2024-06-27 18:35:45,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1807, PETRI_PLACES=109, PETRI_TRANSITIONS=171} [2024-06-27 18:35:45,344 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 18:35:45,344 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 171 transitions, 1807 flow [2024-06-27 18:35:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:45,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:35:45,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:45,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash 650860018, now seen corresponding path program 2 times [2024-06-27 18:35:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187282347] [2024-06-27 18:35:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187282347] [2024-06-27 18:35:46,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187282347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:46,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79280028] [2024-06-27 18:35:46,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:46,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:46,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:46,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 171 transitions, 1807 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:46,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:46,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:46,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:47,307 INFO L124 PetriNetUnfolderBase]: 4928/7871 cut-off events. [2024-06-27 18:35:47,307 INFO L125 PetriNetUnfolderBase]: For 47632/47638 co-relation queries the response was YES. [2024-06-27 18:35:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32400 conditions, 7871 events. 4928/7871 cut-off events. For 47632/47638 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 48868 event pairs, 1520 based on Foata normal form. 14/7695 useless extension candidates. Maximal degree in co-relation 32353. Up to 6240 conditions per place. [2024-06-27 18:35:47,358 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 117 selfloop transitions, 94 changer transitions 0/220 dead transitions. [2024-06-27 18:35:47,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 220 transitions, 2466 flow [2024-06-27 18:35:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:35:47,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 18:35:47,360 INFO L175 Difference]: Start difference. First operand has 109 places, 171 transitions, 1807 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:35:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 220 transitions, 2466 flow [2024-06-27 18:35:47,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 220 transitions, 2317 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:47,414 INFO L231 Difference]: Finished difference. Result has 114 places, 174 transitions, 1947 flow [2024-06-27 18:35:47,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1947, PETRI_PLACES=114, PETRI_TRANSITIONS=174} [2024-06-27 18:35:47,414 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 18:35:47,415 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 174 transitions, 1947 flow [2024-06-27 18:35:47,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:47,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:47,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:47,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:35:47,415 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:47,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash 75329474, now seen corresponding path program 3 times [2024-06-27 18:35:47,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:47,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930728383] [2024-06-27 18:35:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:47,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930728383] [2024-06-27 18:35:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930728383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838392515] [2024-06-27 18:35:48,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:48,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:48,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:48,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 174 transitions, 1947 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:48,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:48,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:48,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:49,340 INFO L124 PetriNetUnfolderBase]: 4912/7827 cut-off events. [2024-06-27 18:35:49,340 INFO L125 PetriNetUnfolderBase]: For 51488/51500 co-relation queries the response was YES. [2024-06-27 18:35:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32829 conditions, 7827 events. 4912/7827 cut-off events. For 51488/51500 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 48511 event pairs, 1508 based on Foata normal form. 11/7641 useless extension candidates. Maximal degree in co-relation 32780. Up to 6227 conditions per place. [2024-06-27 18:35:49,402 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 117 selfloop transitions, 88 changer transitions 0/214 dead transitions. [2024-06-27 18:35:49,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 214 transitions, 2515 flow [2024-06-27 18:35:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:35:49,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 18:35:49,404 INFO L175 Difference]: Start difference. First operand has 114 places, 174 transitions, 1947 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:35:49,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 214 transitions, 2515 flow [2024-06-27 18:35:49,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 214 transitions, 2367 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:49,468 INFO L231 Difference]: Finished difference. Result has 117 places, 176 transitions, 2014 flow [2024-06-27 18:35:49,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2014, PETRI_PLACES=117, PETRI_TRANSITIONS=176} [2024-06-27 18:35:49,469 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 18:35:49,469 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 176 transitions, 2014 flow [2024-06-27 18:35:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:49,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:49,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:49,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:35:49,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:49,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash -745941217, now seen corresponding path program 1 times [2024-06-27 18:35:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:49,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445526818] [2024-06-27 18:35:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:49,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445526818] [2024-06-27 18:35:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445526818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:50,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552986780] [2024-06-27 18:35:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:50,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:50,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:50,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 176 transitions, 2014 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:50,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:50,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:51,070 INFO L124 PetriNetUnfolderBase]: 4917/7829 cut-off events. [2024-06-27 18:35:51,070 INFO L125 PetriNetUnfolderBase]: For 56143/56145 co-relation queries the response was YES. [2024-06-27 18:35:51,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33076 conditions, 7829 events. 4917/7829 cut-off events. For 56143/56145 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 48350 event pairs, 1952 based on Foata normal form. 1/7643 useless extension candidates. Maximal degree in co-relation 33026. Up to 6976 conditions per place. [2024-06-27 18:35:51,128 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 179 selfloop transitions, 12 changer transitions 0/200 dead transitions. [2024-06-27 18:35:51,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 200 transitions, 2490 flow [2024-06-27 18:35:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:35:51,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:35:51,129 INFO L175 Difference]: Start difference. First operand has 117 places, 176 transitions, 2014 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:35:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 200 transitions, 2490 flow [2024-06-27 18:35:51,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 200 transitions, 2349 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:51,201 INFO L231 Difference]: Finished difference. Result has 119 places, 179 transitions, 1935 flow [2024-06-27 18:35:51,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1935, PETRI_PLACES=119, PETRI_TRANSITIONS=179} [2024-06-27 18:35:51,202 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-27 18:35:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 179 transitions, 1935 flow [2024-06-27 18:35:51,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:51,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:51,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:51,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:35:51,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:51,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:51,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1102379637, now seen corresponding path program 1 times [2024-06-27 18:35:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:51,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607815009] [2024-06-27 18:35:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:51,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:51,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607815009] [2024-06-27 18:35:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607815009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685250181] [2024-06-27 18:35:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:51,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:51,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 179 transitions, 1935 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:51,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:51,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:53,168 INFO L124 PetriNetUnfolderBase]: 5206/8390 cut-off events. [2024-06-27 18:35:53,169 INFO L125 PetriNetUnfolderBase]: For 67821/67829 co-relation queries the response was YES. [2024-06-27 18:35:53,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35649 conditions, 8390 events. 5206/8390 cut-off events. For 67821/67829 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 53428 event pairs, 1266 based on Foata normal form. 8/8128 useless extension candidates. Maximal degree in co-relation 35597. Up to 6893 conditions per place. [2024-06-27 18:35:53,222 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 170 selfloop transitions, 48 changer transitions 0/228 dead transitions. [2024-06-27 18:35:53,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 228 transitions, 2623 flow [2024-06-27 18:35:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:35:53,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-27 18:35:53,224 INFO L175 Difference]: Start difference. First operand has 119 places, 179 transitions, 1935 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:35:53,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 228 transitions, 2623 flow [2024-06-27 18:35:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 228 transitions, 2585 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:53,308 INFO L231 Difference]: Finished difference. Result has 122 places, 183 transitions, 2048 flow [2024-06-27 18:35:53,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2048, PETRI_PLACES=122, PETRI_TRANSITIONS=183} [2024-06-27 18:35:53,308 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 18:35:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 183 transitions, 2048 flow [2024-06-27 18:35:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:53,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:35:53,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1105236597, now seen corresponding path program 2 times [2024-06-27 18:35:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977517864] [2024-06-27 18:35:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977517864] [2024-06-27 18:35:54,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977517864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:54,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986424582] [2024-06-27 18:35:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:54,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 183 transitions, 2048 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:54,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:54,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:55,251 INFO L124 PetriNetUnfolderBase]: 5198/8375 cut-off events. [2024-06-27 18:35:55,251 INFO L125 PetriNetUnfolderBase]: For 73665/73673 co-relation queries the response was YES. [2024-06-27 18:35:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36461 conditions, 8375 events. 5198/8375 cut-off events. For 73665/73673 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 53271 event pairs, 1632 based on Foata normal form. 8/8117 useless extension candidates. Maximal degree in co-relation 36408. Up to 7040 conditions per place. [2024-06-27 18:35:55,316 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 164 selfloop transitions, 52 changer transitions 0/226 dead transitions. [2024-06-27 18:35:55,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 226 transitions, 2624 flow [2024-06-27 18:35:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:35:55,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:35:55,318 INFO L175 Difference]: Start difference. First operand has 122 places, 183 transitions, 2048 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:35:55,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 226 transitions, 2624 flow [2024-06-27 18:35:55,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 226 transitions, 2553 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:55,408 INFO L231 Difference]: Finished difference. Result has 126 places, 183 transitions, 2091 flow [2024-06-27 18:35:55,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2091, PETRI_PLACES=126, PETRI_TRANSITIONS=183} [2024-06-27 18:35:55,408 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-27 18:35:55,408 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 183 transitions, 2091 flow [2024-06-27 18:35:55,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:55,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:55,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:35:55,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:55,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1297995173, now seen corresponding path program 1 times [2024-06-27 18:35:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:55,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903077252] [2024-06-27 18:35:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:56,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:56,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903077252] [2024-06-27 18:35:56,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903077252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:56,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:56,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:56,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962759523] [2024-06-27 18:35:56,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:56,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:56,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:56,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:56,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 183 transitions, 2091 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:56,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:56,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:56,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:58,017 INFO L124 PetriNetUnfolderBase]: 5386/8573 cut-off events. [2024-06-27 18:35:58,017 INFO L125 PetriNetUnfolderBase]: For 83390/83392 co-relation queries the response was YES. [2024-06-27 18:35:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38062 conditions, 8573 events. 5386/8573 cut-off events. For 83390/83392 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 54074 event pairs, 1466 based on Foata normal form. 24/8355 useless extension candidates. Maximal degree in co-relation 38007. Up to 6590 conditions per place. [2024-06-27 18:35:58,093 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 130 selfloop transitions, 98 changer transitions 0/238 dead transitions. [2024-06-27 18:35:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 238 transitions, 2755 flow [2024-06-27 18:35:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:35:58,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 18:35:58,095 INFO L175 Difference]: Start difference. First operand has 126 places, 183 transitions, 2091 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:35:58,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 238 transitions, 2755 flow [2024-06-27 18:35:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 238 transitions, 2641 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:58,195 INFO L231 Difference]: Finished difference. Result has 128 places, 186 transitions, 2226 flow [2024-06-27 18:35:58,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2226, PETRI_PLACES=128, PETRI_TRANSITIONS=186} [2024-06-27 18:35:58,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 18:35:58,196 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 186 transitions, 2226 flow [2024-06-27 18:35:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:58,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:58,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:58,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:35:58,197 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:58,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1830692097, now seen corresponding path program 1 times [2024-06-27 18:35:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112527229] [2024-06-27 18:35:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:58,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112527229] [2024-06-27 18:35:58,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112527229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:58,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807485533] [2024-06-27 18:35:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:58,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:58,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 186 transitions, 2226 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:58,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:58,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:58,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:59,922 INFO L124 PetriNetUnfolderBase]: 5477/8687 cut-off events. [2024-06-27 18:35:59,922 INFO L125 PetriNetUnfolderBase]: For 89530/89536 co-relation queries the response was YES. [2024-06-27 18:35:59,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39972 conditions, 8687 events. 5477/8687 cut-off events. For 89530/89536 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 54338 event pairs, 1936 based on Foata normal form. 7/8443 useless extension candidates. Maximal degree in co-relation 39916. Up to 7712 conditions per place. [2024-06-27 18:35:59,985 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 196 selfloop transitions, 15 changer transitions 0/221 dead transitions. [2024-06-27 18:35:59,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 221 transitions, 2862 flow [2024-06-27 18:35:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:35:59,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:35:59,986 INFO L175 Difference]: Start difference. First operand has 128 places, 186 transitions, 2226 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:35:59,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 221 transitions, 2862 flow [2024-06-27 18:36:00,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 221 transitions, 2647 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:00,103 INFO L231 Difference]: Finished difference. Result has 129 places, 195 transitions, 2195 flow [2024-06-27 18:36:00,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2195, PETRI_PLACES=129, PETRI_TRANSITIONS=195} [2024-06-27 18:36:00,103 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 18:36:00,103 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 195 transitions, 2195 flow [2024-06-27 18:36:00,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:00,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:00,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:36:00,104 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:00,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1421671003, now seen corresponding path program 2 times [2024-06-27 18:36:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873804774] [2024-06-27 18:36:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:01,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:01,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873804774] [2024-06-27 18:36:01,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873804774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:01,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:01,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:01,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838568734] [2024-06-27 18:36:01,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:01,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:01,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:01,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:01,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 195 transitions, 2195 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:01,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:01,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:01,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:02,554 INFO L124 PetriNetUnfolderBase]: 5479/8683 cut-off events. [2024-06-27 18:36:02,554 INFO L125 PetriNetUnfolderBase]: For 93887/93895 co-relation queries the response was YES. [2024-06-27 18:36:02,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40411 conditions, 8683 events. 5479/8683 cut-off events. For 93887/93895 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 54385 event pairs, 1598 based on Foata normal form. 6/8423 useless extension candidates. Maximal degree in co-relation 40353. Up to 6958 conditions per place. [2024-06-27 18:36:02,620 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 131 selfloop transitions, 104 changer transitions 0/245 dead transitions. [2024-06-27 18:36:02,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 245 transitions, 2875 flow [2024-06-27 18:36:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:36:02,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:36:02,622 INFO L175 Difference]: Start difference. First operand has 129 places, 195 transitions, 2195 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:36:02,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 245 transitions, 2875 flow [2024-06-27 18:36:02,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 245 transitions, 2833 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:02,723 INFO L231 Difference]: Finished difference. Result has 134 places, 198 transitions, 2418 flow [2024-06-27 18:36:02,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2418, PETRI_PLACES=134, PETRI_TRANSITIONS=198} [2024-06-27 18:36:02,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-27 18:36:02,724 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 198 transitions, 2418 flow [2024-06-27 18:36:02,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:02,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:02,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:02,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:36:02,724 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:02,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash 688184443, now seen corresponding path program 3 times [2024-06-27 18:36:02,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416421912] [2024-06-27 18:36:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416421912] [2024-06-27 18:36:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416421912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592294072] [2024-06-27 18:36:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:03,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:03,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 198 transitions, 2418 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:03,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:03,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:03,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:05,366 INFO L124 PetriNetUnfolderBase]: 5513/8723 cut-off events. [2024-06-27 18:36:05,366 INFO L125 PetriNetUnfolderBase]: For 106519/106527 co-relation queries the response was YES. [2024-06-27 18:36:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42365 conditions, 8723 events. 5513/8723 cut-off events. For 106519/106527 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 54604 event pairs, 1574 based on Foata normal form. 6/8466 useless extension candidates. Maximal degree in co-relation 42306. Up to 7008 conditions per place. [2024-06-27 18:36:05,426 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 132 selfloop transitions, 106 changer transitions 0/248 dead transitions. [2024-06-27 18:36:05,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 248 transitions, 3112 flow [2024-06-27 18:36:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:36:05,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:36:05,427 INFO L175 Difference]: Start difference. First operand has 134 places, 198 transitions, 2418 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:36:05,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 248 transitions, 3112 flow [2024-06-27 18:36:05,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 248 transitions, 2873 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:05,561 INFO L231 Difference]: Finished difference. Result has 136 places, 201 transitions, 2454 flow [2024-06-27 18:36:05,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2454, PETRI_PLACES=136, PETRI_TRANSITIONS=201} [2024-06-27 18:36:05,562 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 18:36:05,562 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 201 transitions, 2454 flow [2024-06-27 18:36:05,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:05,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:05,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:36:05,563 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:05,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1658143033, now seen corresponding path program 4 times [2024-06-27 18:36:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526503519] [2024-06-27 18:36:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:06,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:06,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526503519] [2024-06-27 18:36:06,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526503519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:06,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:06,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472369721] [2024-06-27 18:36:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:06,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:06,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:06,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 201 transitions, 2454 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:06,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:06,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:06,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:07,908 INFO L124 PetriNetUnfolderBase]: 5477/8539 cut-off events. [2024-06-27 18:36:07,909 INFO L125 PetriNetUnfolderBase]: For 113882/113890 co-relation queries the response was YES. [2024-06-27 18:36:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42774 conditions, 8539 events. 5477/8539 cut-off events. For 113882/113890 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 52654 event pairs, 1409 based on Foata normal form. 6/8330 useless extension candidates. Maximal degree in co-relation 42714. Up to 6564 conditions per place. [2024-06-27 18:36:07,989 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 127 selfloop transitions, 117 changer transitions 0/254 dead transitions. [2024-06-27 18:36:07,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 254 transitions, 3174 flow [2024-06-27 18:36:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:36:07,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 18:36:07,990 INFO L175 Difference]: Start difference. First operand has 136 places, 201 transitions, 2454 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:36:07,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 254 transitions, 3174 flow [2024-06-27 18:36:08,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 254 transitions, 2925 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:08,147 INFO L231 Difference]: Finished difference. Result has 138 places, 204 transitions, 2507 flow [2024-06-27 18:36:08,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2507, PETRI_PLACES=138, PETRI_TRANSITIONS=204} [2024-06-27 18:36:08,148 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-27 18:36:08,148 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 204 transitions, 2507 flow [2024-06-27 18:36:08,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:08,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:08,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:36:08,149 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:08,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1842149697, now seen corresponding path program 2 times [2024-06-27 18:36:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748931912] [2024-06-27 18:36:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:08,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:08,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748931912] [2024-06-27 18:36:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748931912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:08,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:08,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430828931] [2024-06-27 18:36:08,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:08,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:08,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 204 transitions, 2507 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:08,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:08,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:08,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:10,049 INFO L124 PetriNetUnfolderBase]: 5514/8613 cut-off events. [2024-06-27 18:36:10,049 INFO L125 PetriNetUnfolderBase]: For 122876/122900 co-relation queries the response was YES. [2024-06-27 18:36:10,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43876 conditions, 8613 events. 5514/8613 cut-off events. For 122876/122900 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 52948 event pairs, 1924 based on Foata normal form. 21/8432 useless extension candidates. Maximal degree in co-relation 43815. Up to 7740 conditions per place. [2024-06-27 18:36:10,128 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 201 selfloop transitions, 20 changer transitions 0/231 dead transitions. [2024-06-27 18:36:10,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 231 transitions, 3097 flow [2024-06-27 18:36:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:36:10,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:36:10,130 INFO L175 Difference]: Start difference. First operand has 138 places, 204 transitions, 2507 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:36:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 231 transitions, 3097 flow [2024-06-27 18:36:10,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 231 transitions, 2819 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:10,321 INFO L231 Difference]: Finished difference. Result has 138 places, 207 transitions, 2323 flow [2024-06-27 18:36:10,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2323, PETRI_PLACES=138, PETRI_TRANSITIONS=207} [2024-06-27 18:36:10,322 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-27 18:36:10,322 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 207 transitions, 2323 flow [2024-06-27 18:36:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:10,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:10,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:10,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:36:10,323 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:10,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1439757771, now seen corresponding path program 1 times [2024-06-27 18:36:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140104023] [2024-06-27 18:36:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:10,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140104023] [2024-06-27 18:36:10,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140104023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:10,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780799930] [2024-06-27 18:36:10,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:10,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:10,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:10,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:36:10,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 207 transitions, 2323 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:36:10,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:10,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:36:10,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:11,975 INFO L124 PetriNetUnfolderBase]: 4932/7887 cut-off events. [2024-06-27 18:36:11,975 INFO L125 PetriNetUnfolderBase]: For 112359/112361 co-relation queries the response was YES. [2024-06-27 18:36:12,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39908 conditions, 7887 events. 4932/7887 cut-off events. For 112359/112361 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 49458 event pairs, 1703 based on Foata normal form. 1/7683 useless extension candidates. Maximal degree in co-relation 39846. Up to 6965 conditions per place. [2024-06-27 18:36:12,036 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 211 selfloop transitions, 13 changer transitions 0/235 dead transitions. [2024-06-27 18:36:12,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 235 transitions, 2930 flow [2024-06-27 18:36:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:36:12,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:36:12,038 INFO L175 Difference]: Start difference. First operand has 138 places, 207 transitions, 2323 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:36:12,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 235 transitions, 2930 flow [2024-06-27 18:36:12,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 235 transitions, 2866 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:12,197 INFO L231 Difference]: Finished difference. Result has 141 places, 214 transitions, 2393 flow [2024-06-27 18:36:12,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2393, PETRI_PLACES=141, PETRI_TRANSITIONS=214} [2024-06-27 18:36:12,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 18:36:12,198 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 214 transitions, 2393 flow [2024-06-27 18:36:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:36:12,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:12,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:36:12,198 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:12,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1842155649, now seen corresponding path program 2 times [2024-06-27 18:36:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:12,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318387185] [2024-06-27 18:36:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318387185] [2024-06-27 18:36:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318387185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:12,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:12,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432900201] [2024-06-27 18:36:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:12,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:36:12,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 214 transitions, 2393 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:36:12,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:12,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:36:12,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:13,859 INFO L124 PetriNetUnfolderBase]: 4906/7842 cut-off events. [2024-06-27 18:36:13,859 INFO L125 PetriNetUnfolderBase]: For 119309/119320 co-relation queries the response was YES. [2024-06-27 18:36:13,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40779 conditions, 7842 events. 4906/7842 cut-off events. For 119309/119320 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 49119 event pairs, 1679 based on Foata normal form. 7/7656 useless extension candidates. Maximal degree in co-relation 40715. Up to 6909 conditions per place. [2024-06-27 18:36:13,925 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 209 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2024-06-27 18:36:13,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 238 transitions, 2975 flow [2024-06-27 18:36:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:36:13,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:36:13,926 INFO L175 Difference]: Start difference. First operand has 141 places, 214 transitions, 2393 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:36:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 238 transitions, 2975 flow [2024-06-27 18:36:14,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 238 transitions, 2932 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:14,113 INFO L231 Difference]: Finished difference. Result has 144 places, 217 transitions, 2434 flow [2024-06-27 18:36:14,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2434, PETRI_PLACES=144, PETRI_TRANSITIONS=217} [2024-06-27 18:36:14,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 18:36:14,114 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 217 transitions, 2434 flow [2024-06-27 18:36:14,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:36:14,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:14,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:14,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:36:14,115 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:14,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1649339449, now seen corresponding path program 1 times [2024-06-27 18:36:14,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:14,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253445384] [2024-06-27 18:36:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:14,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253445384] [2024-06-27 18:36:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253445384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:14,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584087052] [2024-06-27 18:36:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:14,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:14,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:14,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 217 transitions, 2434 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:15,939 INFO L124 PetriNetUnfolderBase]: 5254/8218 cut-off events. [2024-06-27 18:36:15,940 INFO L125 PetriNetUnfolderBase]: For 127246/127248 co-relation queries the response was YES. [2024-06-27 18:36:15,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43240 conditions, 8218 events. 5254/8218 cut-off events. For 127246/127248 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 50023 event pairs, 1878 based on Foata normal form. 1/8067 useless extension candidates. Maximal degree in co-relation 43175. Up to 7460 conditions per place. [2024-06-27 18:36:16,012 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 223 selfloop transitions, 15 changer transitions 0/247 dead transitions. [2024-06-27 18:36:16,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 247 transitions, 3072 flow [2024-06-27 18:36:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:36:16,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:36:16,013 INFO L175 Difference]: Start difference. First operand has 144 places, 217 transitions, 2434 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:36:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 247 transitions, 3072 flow [2024-06-27 18:36:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 247 transitions, 3012 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:16,245 INFO L231 Difference]: Finished difference. Result has 147 places, 220 transitions, 2454 flow [2024-06-27 18:36:16,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2454, PETRI_PLACES=147, PETRI_TRANSITIONS=220} [2024-06-27 18:36:16,245 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-27 18:36:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 220 transitions, 2454 flow [2024-06-27 18:36:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:16,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:16,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:36:16,246 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -185968641, now seen corresponding path program 1 times [2024-06-27 18:36:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37755649] [2024-06-27 18:36:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:16,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:16,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37755649] [2024-06-27 18:36:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37755649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:16,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:16,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:16,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31714169] [2024-06-27 18:36:16,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:16,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:17,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:17,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 220 transitions, 2454 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:17,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:17,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:17,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:18,339 INFO L124 PetriNetUnfolderBase]: 5838/9228 cut-off events. [2024-06-27 18:36:18,339 INFO L125 PetriNetUnfolderBase]: For 169651/169659 co-relation queries the response was YES. [2024-06-27 18:36:18,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49744 conditions, 9228 events. 5838/9228 cut-off events. For 169651/169659 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 57958 event pairs, 1223 based on Foata normal form. 22/8992 useless extension candidates. Maximal degree in co-relation 49678. Up to 6409 conditions per place. [2024-06-27 18:36:18,578 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 171 selfloop transitions, 105 changer transitions 0/286 dead transitions. [2024-06-27 18:36:18,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 286 transitions, 3428 flow [2024-06-27 18:36:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:36:18,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:36:18,580 INFO L175 Difference]: Start difference. First operand has 147 places, 220 transitions, 2454 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:36:18,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 286 transitions, 3428 flow [2024-06-27 18:36:18,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 286 transitions, 3372 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:18,781 INFO L231 Difference]: Finished difference. Result has 152 places, 230 transitions, 2799 flow [2024-06-27 18:36:18,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2799, PETRI_PLACES=152, PETRI_TRANSITIONS=230} [2024-06-27 18:36:18,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 98 predicate places. [2024-06-27 18:36:18,782 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 230 transitions, 2799 flow [2024-06-27 18:36:18,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:18,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:18,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:18,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:36:18,783 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:18,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -954620141, now seen corresponding path program 2 times [2024-06-27 18:36:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135470481] [2024-06-27 18:36:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135470481] [2024-06-27 18:36:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135470481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727696182] [2024-06-27 18:36:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:19,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:19,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:19,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 230 transitions, 2799 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:19,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:19,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:19,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:21,037 INFO L124 PetriNetUnfolderBase]: 5935/9394 cut-off events. [2024-06-27 18:36:21,037 INFO L125 PetriNetUnfolderBase]: For 185738/185746 co-relation queries the response was YES. [2024-06-27 18:36:21,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52202 conditions, 9394 events. 5935/9394 cut-off events. For 185738/185746 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 59222 event pairs, 1753 based on Foata normal form. 22/9160 useless extension candidates. Maximal degree in co-relation 52133. Up to 7197 conditions per place. [2024-06-27 18:36:21,141 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 171 selfloop transitions, 107 changer transitions 0/288 dead transitions. [2024-06-27 18:36:21,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 288 transitions, 3617 flow [2024-06-27 18:36:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:36:21,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:36:21,143 INFO L175 Difference]: Start difference. First operand has 152 places, 230 transitions, 2799 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:36:21,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 288 transitions, 3617 flow [2024-06-27 18:36:21,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 288 transitions, 3476 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:21,427 INFO L231 Difference]: Finished difference. Result has 158 places, 234 transitions, 2968 flow [2024-06-27 18:36:21,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2968, PETRI_PLACES=158, PETRI_TRANSITIONS=234} [2024-06-27 18:36:21,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-27 18:36:21,428 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 234 transitions, 2968 flow [2024-06-27 18:36:21,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:21,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:21,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:21,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:36:21,429 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:21,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash 402077507, now seen corresponding path program 1 times [2024-06-27 18:36:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15728500] [2024-06-27 18:36:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15728500] [2024-06-27 18:36:22,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15728500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:22,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:22,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:22,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918618028] [2024-06-27 18:36:22,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:22,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:22,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 234 transitions, 2968 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:22,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:22,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:23,433 INFO L124 PetriNetUnfolderBase]: 5965/9444 cut-off events. [2024-06-27 18:36:23,434 INFO L125 PetriNetUnfolderBase]: For 189990/190015 co-relation queries the response was YES. [2024-06-27 18:36:23,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53352 conditions, 9444 events. 5965/9444 cut-off events. For 189990/190015 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 59670 event pairs, 1981 based on Foata normal form. 24/9211 useless extension candidates. Maximal degree in co-relation 53280. Up to 8261 conditions per place. [2024-06-27 18:36:23,524 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 247 selfloop transitions, 40 changer transitions 0/297 dead transitions. [2024-06-27 18:36:23,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 297 transitions, 4194 flow [2024-06-27 18:36:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:36:23,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:36:23,525 INFO L175 Difference]: Start difference. First operand has 158 places, 234 transitions, 2968 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:36:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 297 transitions, 4194 flow [2024-06-27 18:36:23,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 297 transitions, 4015 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:23,847 INFO L231 Difference]: Finished difference. Result has 163 places, 261 transitions, 3478 flow [2024-06-27 18:36:23,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3478, PETRI_PLACES=163, PETRI_TRANSITIONS=261} [2024-06-27 18:36:23,848 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 18:36:23,848 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 261 transitions, 3478 flow [2024-06-27 18:36:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:23,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:23,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:23,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:36:23,848 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:23,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -818343907, now seen corresponding path program 3 times [2024-06-27 18:36:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421250383] [2024-06-27 18:36:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421250383] [2024-06-27 18:36:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421250383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950581401] [2024-06-27 18:36:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:24,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:24,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 261 transitions, 3478 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:24,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:24,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:24,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:26,283 INFO L124 PetriNetUnfolderBase]: 6191/9836 cut-off events. [2024-06-27 18:36:26,283 INFO L125 PetriNetUnfolderBase]: For 214305/214325 co-relation queries the response was YES. [2024-06-27 18:36:26,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57852 conditions, 9836 events. 6191/9836 cut-off events. For 214305/214325 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 62743 event pairs, 1454 based on Foata normal form. 36/9612 useless extension candidates. Maximal degree in co-relation 57776. Up to 7468 conditions per place. [2024-06-27 18:36:26,378 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 191 selfloop transitions, 124 changer transitions 0/325 dead transitions. [2024-06-27 18:36:26,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 325 transitions, 4553 flow [2024-06-27 18:36:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:36:26,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 18:36:26,380 INFO L175 Difference]: Start difference. First operand has 163 places, 261 transitions, 3478 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:36:26,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 325 transitions, 4553 flow [2024-06-27 18:36:26,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 325 transitions, 4462 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:26,724 INFO L231 Difference]: Finished difference. Result has 169 places, 266 transitions, 3774 flow [2024-06-27 18:36:26,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3774, PETRI_PLACES=169, PETRI_TRANSITIONS=266} [2024-06-27 18:36:26,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 18:36:26,724 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 266 transitions, 3774 flow [2024-06-27 18:36:26,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:26,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:26,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:36:26,725 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:26,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1588721487, now seen corresponding path program 4 times [2024-06-27 18:36:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450156802] [2024-06-27 18:36:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450156802] [2024-06-27 18:36:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450156802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448937453] [2024-06-27 18:36:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:27,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:27,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 266 transitions, 3774 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:27,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:27,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:27,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:29,316 INFO L124 PetriNetUnfolderBase]: 6345/10067 cut-off events. [2024-06-27 18:36:29,316 INFO L125 PetriNetUnfolderBase]: For 236159/236179 co-relation queries the response was YES. [2024-06-27 18:36:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60476 conditions, 10067 events. 6345/10067 cut-off events. For 236159/236179 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 64398 event pairs, 1873 based on Foata normal form. 40/9848 useless extension candidates. Maximal degree in co-relation 60398. Up to 8079 conditions per place. [2024-06-27 18:36:29,624 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 193 selfloop transitions, 121 changer transitions 0/324 dead transitions. [2024-06-27 18:36:29,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 324 transitions, 4688 flow [2024-06-27 18:36:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:36:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:36:29,628 INFO L175 Difference]: Start difference. First operand has 169 places, 266 transitions, 3774 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:36:29,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 324 transitions, 4688 flow [2024-06-27 18:36:29,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 324 transitions, 4511 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:29,982 INFO L231 Difference]: Finished difference. Result has 173 places, 268 transitions, 3909 flow [2024-06-27 18:36:29,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3909, PETRI_PLACES=173, PETRI_TRANSITIONS=268} [2024-06-27 18:36:29,983 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 18:36:29,983 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 268 transitions, 3909 flow [2024-06-27 18:36:29,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:29,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:29,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:36:29,984 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:29,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:29,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1583359107, now seen corresponding path program 5 times [2024-06-27 18:36:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:29,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223866757] [2024-06-27 18:36:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223866757] [2024-06-27 18:36:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223866757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:30,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:30,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:30,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163614839] [2024-06-27 18:36:30,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:30,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:30,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:30,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 268 transitions, 3909 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:30,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:30,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:32,437 INFO L124 PetriNetUnfolderBase]: 6499/10279 cut-off events. [2024-06-27 18:36:32,437 INFO L125 PetriNetUnfolderBase]: For 248990/248998 co-relation queries the response was YES. [2024-06-27 18:36:32,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62671 conditions, 10279 events. 6499/10279 cut-off events. For 248990/248998 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 65863 event pairs, 1876 based on Foata normal form. 26/10049 useless extension candidates. Maximal degree in co-relation 62591. Up to 8313 conditions per place. [2024-06-27 18:36:32,552 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 199 selfloop transitions, 114 changer transitions 0/323 dead transitions. [2024-06-27 18:36:32,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 323 transitions, 4811 flow [2024-06-27 18:36:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:36:32,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:36:32,555 INFO L175 Difference]: Start difference. First operand has 173 places, 268 transitions, 3909 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:36:32,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 323 transitions, 4811 flow [2024-06-27 18:36:33,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 323 transitions, 4545 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:33,025 INFO L231 Difference]: Finished difference. Result has 175 places, 270 transitions, 3943 flow [2024-06-27 18:36:33,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3943, PETRI_PLACES=175, PETRI_TRANSITIONS=270} [2024-06-27 18:36:33,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-27 18:36:33,026 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 270 transitions, 3943 flow [2024-06-27 18:36:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:33,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:33,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:33,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:36:33,027 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:33,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1583143905, now seen corresponding path program 1 times [2024-06-27 18:36:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:33,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669450455] [2024-06-27 18:36:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:33,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669450455] [2024-06-27 18:36:34,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669450455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:34,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:34,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:34,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337217081] [2024-06-27 18:36:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:34,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:34,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:34,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 270 transitions, 3943 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:34,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:34,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:34,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:35,981 INFO L124 PetriNetUnfolderBase]: 6595/10441 cut-off events. [2024-06-27 18:36:35,981 INFO L125 PetriNetUnfolderBase]: For 254539/254547 co-relation queries the response was YES. [2024-06-27 18:36:36,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63512 conditions, 10441 events. 6595/10441 cut-off events. For 254539/254547 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 67210 event pairs, 1868 based on Foata normal form. 18/10201 useless extension candidates. Maximal degree in co-relation 63431. Up to 7789 conditions per place. [2024-06-27 18:36:36,096 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 194 selfloop transitions, 121 changer transitions 0/325 dead transitions. [2024-06-27 18:36:36,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 325 transitions, 4843 flow [2024-06-27 18:36:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:36:36,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 18:36:36,098 INFO L175 Difference]: Start difference. First operand has 175 places, 270 transitions, 3943 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:36:36,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 325 transitions, 4843 flow [2024-06-27 18:36:36,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 325 transitions, 4587 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:36,567 INFO L231 Difference]: Finished difference. Result has 177 places, 272 transitions, 3995 flow [2024-06-27 18:36:36,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3995, PETRI_PLACES=177, PETRI_TRANSITIONS=272} [2024-06-27 18:36:36,568 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 18:36:36,568 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 272 transitions, 3995 flow [2024-06-27 18:36:36,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:36,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:36,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:36,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:36:36,569 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash 867733417, now seen corresponding path program 2 times [2024-06-27 18:36:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661722381] [2024-06-27 18:36:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661722381] [2024-06-27 18:36:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661722381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:37,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970318152] [2024-06-27 18:36:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:37,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:37,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:37,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 272 transitions, 3995 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:38,793 INFO L124 PetriNetUnfolderBase]: 6673/10561 cut-off events. [2024-06-27 18:36:38,793 INFO L125 PetriNetUnfolderBase]: For 256652/256669 co-relation queries the response was YES. [2024-06-27 18:36:38,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64263 conditions, 10561 events. 6673/10561 cut-off events. For 256652/256669 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 68141 event pairs, 2182 based on Foata normal form. 14/10318 useless extension candidates. Maximal degree in co-relation 64181. Up to 9224 conditions per place. [2024-06-27 18:36:38,908 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 259 selfloop transitions, 43 changer transitions 0/312 dead transitions. [2024-06-27 18:36:38,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 312 transitions, 4927 flow [2024-06-27 18:36:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:36:38,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:36:38,909 INFO L175 Difference]: Start difference. First operand has 177 places, 272 transitions, 3995 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:36:38,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 312 transitions, 4927 flow [2024-06-27 18:36:39,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 312 transitions, 4715 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:39,287 INFO L231 Difference]: Finished difference. Result has 180 places, 280 transitions, 4022 flow [2024-06-27 18:36:39,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4022, PETRI_PLACES=180, PETRI_TRANSITIONS=280} [2024-06-27 18:36:39,288 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-27 18:36:39,288 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 280 transitions, 4022 flow [2024-06-27 18:36:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:39,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:39,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:39,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:36:39,288 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:39,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 396738110, now seen corresponding path program 1 times [2024-06-27 18:36:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:39,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697949211] [2024-06-27 18:36:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697949211] [2024-06-27 18:36:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697949211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432276859] [2024-06-27 18:36:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:39,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:36:39,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 280 transitions, 4022 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:39,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:36:39,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:41,856 INFO L124 PetriNetUnfolderBase]: 6975/10890 cut-off events. [2024-06-27 18:36:41,856 INFO L125 PetriNetUnfolderBase]: For 271215/271229 co-relation queries the response was YES. [2024-06-27 18:36:41,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66834 conditions, 10890 events. 6975/10890 cut-off events. For 271215/271229 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 68812 event pairs, 2385 based on Foata normal form. 15/10675 useless extension candidates. Maximal degree in co-relation 66750. Up to 9978 conditions per place. [2024-06-27 18:36:41,955 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 289 selfloop transitions, 18 changer transitions 0/315 dead transitions. [2024-06-27 18:36:41,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 315 transitions, 4834 flow [2024-06-27 18:36:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:36:41,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-27 18:36:41,956 INFO L175 Difference]: Start difference. First operand has 180 places, 280 transitions, 4022 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:36:41,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 315 transitions, 4834 flow [2024-06-27 18:36:42,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 315 transitions, 4743 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:42,410 INFO L231 Difference]: Finished difference. Result has 184 places, 283 transitions, 4031 flow [2024-06-27 18:36:42,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4031, PETRI_PLACES=184, PETRI_TRANSITIONS=283} [2024-06-27 18:36:42,412 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 18:36:42,412 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 283 transitions, 4031 flow [2024-06-27 18:36:42,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:42,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:42,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:42,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:36:42,413 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -397833665, now seen corresponding path program 6 times [2024-06-27 18:36:42,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:42,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942500241] [2024-06-27 18:36:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:43,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:43,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942500241] [2024-06-27 18:36:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942500241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:43,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122236915] [2024-06-27 18:36:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:43,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:43,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:43,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:43,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 283 transitions, 4031 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:43,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:43,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:44,935 INFO L124 PetriNetUnfolderBase]: 6697/10579 cut-off events. [2024-06-27 18:36:44,936 INFO L125 PetriNetUnfolderBase]: For 283920/283973 co-relation queries the response was YES. [2024-06-27 18:36:45,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65781 conditions, 10579 events. 6697/10579 cut-off events. For 283920/283973 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 68022 event pairs, 1917 based on Foata normal form. 35/10335 useless extension candidates. Maximal degree in co-relation 65695. Up to 8576 conditions per place. [2024-06-27 18:36:45,078 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 212 selfloop transitions, 110 changer transitions 0/333 dead transitions. [2024-06-27 18:36:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 333 transitions, 4903 flow [2024-06-27 18:36:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:36:45,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:36:45,079 INFO L175 Difference]: Start difference. First operand has 184 places, 283 transitions, 4031 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:36:45,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 333 transitions, 4903 flow [2024-06-27 18:36:45,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 333 transitions, 4797 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:45,629 INFO L231 Difference]: Finished difference. Result has 187 places, 284 transitions, 4181 flow [2024-06-27 18:36:45,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4181, PETRI_PLACES=187, PETRI_TRANSITIONS=284} [2024-06-27 18:36:45,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 18:36:45,630 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 284 transitions, 4181 flow [2024-06-27 18:36:45,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 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) [2024-06-27 18:36:45,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:45,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:45,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:36:45,631 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:45,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:45,631 INFO L85 PathProgramCache]: Analyzing trace with hash -615428045, now seen corresponding path program 2 times [2024-06-27 18:36:45,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:45,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344200023] [2024-06-27 18:36:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:45,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344200023] [2024-06-27 18:36:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344200023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254118219] [2024-06-27 18:36:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:46,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:46,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 284 transitions, 4181 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:46,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:46,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:46,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:48,490 INFO L124 PetriNetUnfolderBase]: 6682/10556 cut-off events. [2024-06-27 18:36:48,490 INFO L125 PetriNetUnfolderBase]: For 280524/280573 co-relation queries the response was YES. [2024-06-27 18:36:48,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65670 conditions, 10556 events. 6682/10556 cut-off events. For 280524/280573 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 67828 event pairs, 1884 based on Foata normal form. 27/10299 useless extension candidates. Maximal degree in co-relation 65583. Up to 8401 conditions per place. [2024-06-27 18:36:48,599 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 209 selfloop transitions, 114 changer transitions 0/334 dead transitions. [2024-06-27 18:36:48,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 334 transitions, 5035 flow [2024-06-27 18:36:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:36:48,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 18:36:48,601 INFO L175 Difference]: Start difference. First operand has 187 places, 284 transitions, 4181 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:36:48,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 334 transitions, 5035 flow [2024-06-27 18:36:49,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 334 transitions, 4797 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:49,159 INFO L231 Difference]: Finished difference. Result has 189 places, 284 transitions, 4178 flow [2024-06-27 18:36:49,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4178, PETRI_PLACES=189, PETRI_TRANSITIONS=284} [2024-06-27 18:36:49,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 18:36:49,159 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 284 transitions, 4178 flow [2024-06-27 18:36:49,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:49,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:49,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:49,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:36:49,160 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -356880605, now seen corresponding path program 3 times [2024-06-27 18:36:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096265190] [2024-06-27 18:36:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:50,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:50,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096265190] [2024-06-27 18:36:50,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096265190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:50,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:50,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:50,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727028717] [2024-06-27 18:36:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:50,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:50,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:50,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:50,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 284 transitions, 4178 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:50,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:50,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:52,007 INFO L124 PetriNetUnfolderBase]: 6672/10530 cut-off events. [2024-06-27 18:36:52,008 INFO L125 PetriNetUnfolderBase]: For 279530/279579 co-relation queries the response was YES. [2024-06-27 18:36:52,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65157 conditions, 10530 events. 6672/10530 cut-off events. For 279530/279579 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 67697 event pairs, 1701 based on Foata normal form. 27/10273 useless extension candidates. Maximal degree in co-relation 65069. Up to 7307 conditions per place. [2024-06-27 18:36:52,136 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 193 selfloop transitions, 130 changer transitions 0/334 dead transitions. [2024-06-27 18:36:52,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 334 transitions, 5008 flow [2024-06-27 18:36:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:36:52,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:36:52,138 INFO L175 Difference]: Start difference. First operand has 189 places, 284 transitions, 4178 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:36:52,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 334 transitions, 5008 flow [2024-06-27 18:36:52,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 334 transitions, 4516 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:52,686 INFO L231 Difference]: Finished difference. Result has 187 places, 285 transitions, 3939 flow [2024-06-27 18:36:52,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3939, PETRI_PLACES=187, PETRI_TRANSITIONS=285} [2024-06-27 18:36:52,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 18:36:52,687 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 285 transitions, 3939 flow [2024-06-27 18:36:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:52,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:52,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:36:52,688 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:52,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1272067526, now seen corresponding path program 2 times [2024-06-27 18:36:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:52,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068876330] [2024-06-27 18:36:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:53,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068876330] [2024-06-27 18:36:53,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068876330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:53,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:53,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872620151] [2024-06-27 18:36:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:53,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:53,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:53,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:53,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:36:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 285 transitions, 3939 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:36:53,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:55,162 INFO L124 PetriNetUnfolderBase]: 6927/10812 cut-off events. [2024-06-27 18:36:55,162 INFO L125 PetriNetUnfolderBase]: For 279603/279637 co-relation queries the response was YES. [2024-06-27 18:36:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65173 conditions, 10812 events. 6927/10812 cut-off events. For 279603/279637 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68179 event pairs, 2307 based on Foata normal form. 29/10610 useless extension candidates. Maximal degree in co-relation 65086. Up to 9833 conditions per place. [2024-06-27 18:36:55,256 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 284 selfloop transitions, 30 changer transitions 0/322 dead transitions. [2024-06-27 18:36:55,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 322 transitions, 4931 flow [2024-06-27 18:36:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:36:55,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-27 18:36:55,258 INFO L175 Difference]: Start difference. First operand has 187 places, 285 transitions, 3939 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:36:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 322 transitions, 4931 flow [2024-06-27 18:36:55,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 322 transitions, 4640 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:55,718 INFO L231 Difference]: Finished difference. Result has 188 places, 291 transitions, 3836 flow [2024-06-27 18:36:55,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3836, PETRI_PLACES=188, PETRI_TRANSITIONS=291} [2024-06-27 18:36:55,719 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:36:55,719 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 291 transitions, 3836 flow [2024-06-27 18:36:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:55,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:55,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:36:55,720 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:55,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1272067123, now seen corresponding path program 3 times [2024-06-27 18:36:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513385354] [2024-06-27 18:36:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:56,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:56,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513385354] [2024-06-27 18:36:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513385354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:56,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:56,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944878266] [2024-06-27 18:36:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:56,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:56,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:56,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 291 transitions, 3836 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:56,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:56,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:56,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:58,049 INFO L124 PetriNetUnfolderBase]: 6681/10472 cut-off events. [2024-06-27 18:36:58,050 INFO L125 PetriNetUnfolderBase]: For 289369/289452 co-relation queries the response was YES. [2024-06-27 18:36:58,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63834 conditions, 10472 events. 6681/10472 cut-off events. For 289369/289452 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 66601 event pairs, 2095 based on Foata normal form. 13/10238 useless extension candidates. Maximal degree in co-relation 63746. Up to 9075 conditions per place. [2024-06-27 18:36:58,169 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 261 selfloop transitions, 56 changer transitions 0/330 dead transitions. [2024-06-27 18:36:58,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 330 transitions, 4938 flow [2024-06-27 18:36:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:36:58,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:36:58,171 INFO L175 Difference]: Start difference. First operand has 188 places, 291 transitions, 3836 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:36:58,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 330 transitions, 4938 flow [2024-06-27 18:36:58,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 330 transitions, 4863 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:58,615 INFO L231 Difference]: Finished difference. Result has 193 places, 299 transitions, 4041 flow [2024-06-27 18:36:58,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4041, PETRI_PLACES=193, PETRI_TRANSITIONS=299} [2024-06-27 18:36:58,615 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 18:36:58,615 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 299 transitions, 4041 flow [2024-06-27 18:36:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:58,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:58,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:36:58,616 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1272512996, now seen corresponding path program 3 times [2024-06-27 18:36:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304197919] [2024-06-27 18:36:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:59,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:59,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304197919] [2024-06-27 18:36:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304197919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:59,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:59,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764629997] [2024-06-27 18:36:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:59,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:36:59,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 299 transitions, 4041 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:59,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:59,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:36:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:00,995 INFO L124 PetriNetUnfolderBase]: 6967/10873 cut-off events. [2024-06-27 18:37:00,995 INFO L125 PetriNetUnfolderBase]: For 307693/307727 co-relation queries the response was YES. [2024-06-27 18:37:01,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67390 conditions, 10873 events. 6967/10873 cut-off events. For 307693/307727 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 68623 event pairs, 2312 based on Foata normal form. 29/10670 useless extension candidates. Maximal degree in co-relation 67299. Up to 9889 conditions per place. [2024-06-27 18:37:01,140 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 290 selfloop transitions, 31 changer transitions 0/329 dead transitions. [2024-06-27 18:37:01,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 329 transitions, 4849 flow [2024-06-27 18:37:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:37:01,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 18:37:01,141 INFO L175 Difference]: Start difference. First operand has 193 places, 299 transitions, 4041 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:37:01,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 329 transitions, 4849 flow [2024-06-27 18:37:01,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 329 transitions, 4645 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:01,754 INFO L231 Difference]: Finished difference. Result has 196 places, 299 transitions, 3905 flow [2024-06-27 18:37:01,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3905, PETRI_PLACES=196, PETRI_TRANSITIONS=299} [2024-06-27 18:37:01,755 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-27 18:37:01,755 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 299 transitions, 3905 flow [2024-06-27 18:37:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:01,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:01,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:01,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:37:01,756 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:01,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1094076841, now seen corresponding path program 1 times [2024-06-27 18:37:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252222108] [2024-06-27 18:37:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252222108] [2024-06-27 18:37:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252222108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589649249] [2024-06-27 18:37:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:02,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:02,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:37:02,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 299 transitions, 3905 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:02,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:02,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:37:02,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:04,198 INFO L124 PetriNetUnfolderBase]: 6145/9848 cut-off events. [2024-06-27 18:37:04,198 INFO L125 PetriNetUnfolderBase]: For 272349/272429 co-relation queries the response was YES. [2024-06-27 18:37:04,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59926 conditions, 9848 events. 6145/9848 cut-off events. For 272349/272429 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 63881 event pairs, 1908 based on Foata normal form. 10/9583 useless extension candidates. Maximal degree in co-relation 59834. Up to 8707 conditions per place. [2024-06-27 18:37:04,291 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 293 selfloop transitions, 29 changer transitions 0/336 dead transitions. [2024-06-27 18:37:04,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 336 transitions, 4753 flow [2024-06-27 18:37:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:37:04,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 18:37:04,292 INFO L175 Difference]: Start difference. First operand has 196 places, 299 transitions, 3905 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:37:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 336 transitions, 4753 flow [2024-06-27 18:37:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 336 transitions, 4683 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:04,682 INFO L231 Difference]: Finished difference. Result has 198 places, 308 transitions, 4023 flow [2024-06-27 18:37:04,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4023, PETRI_PLACES=198, PETRI_TRANSITIONS=308} [2024-06-27 18:37:04,682 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 18:37:04,682 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 308 transitions, 4023 flow [2024-06-27 18:37:04,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:04,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:04,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:04,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:37:04,683 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:04,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1094197958, now seen corresponding path program 1 times [2024-06-27 18:37:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570050704] [2024-06-27 18:37:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570050704] [2024-06-27 18:37:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570050704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30571631] [2024-06-27 18:37:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:05,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 308 transitions, 4023 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:05,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:06,890 INFO L124 PetriNetUnfolderBase]: 6413/10135 cut-off events. [2024-06-27 18:37:06,890 INFO L125 PetriNetUnfolderBase]: For 282375/282377 co-relation queries the response was YES. [2024-06-27 18:37:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63090 conditions, 10135 events. 6413/10135 cut-off events. For 282375/282377 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 64508 event pairs, 2025 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 62996. Up to 9190 conditions per place. [2024-06-27 18:37:07,007 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 313 selfloop transitions, 16 changer transitions 0/338 dead transitions. [2024-06-27 18:37:07,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 338 transitions, 4861 flow [2024-06-27 18:37:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:37:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:37:07,009 INFO L175 Difference]: Start difference. First operand has 198 places, 308 transitions, 4023 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:37:07,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 338 transitions, 4861 flow [2024-06-27 18:37:07,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 338 transitions, 4768 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:07,519 INFO L231 Difference]: Finished difference. Result has 202 places, 311 transitions, 4020 flow [2024-06-27 18:37:07,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4020, PETRI_PLACES=202, PETRI_TRANSITIONS=311} [2024-06-27 18:37:07,519 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:37:07,520 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 311 transitions, 4020 flow [2024-06-27 18:37:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:07,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:07,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:37:07,520 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:07,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1682819491, now seen corresponding path program 2 times [2024-06-27 18:37:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055216369] [2024-06-27 18:37:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055216369] [2024-06-27 18:37:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055216369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:08,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333021136] [2024-06-27 18:37:08,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:08,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:08,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:37:08,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 311 transitions, 4020 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:08,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:08,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:37:08,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:09,818 INFO L124 PetriNetUnfolderBase]: 6251/9979 cut-off events. [2024-06-27 18:37:09,818 INFO L125 PetriNetUnfolderBase]: For 300489/300597 co-relation queries the response was YES. [2024-06-27 18:37:09,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63693 conditions, 9979 events. 6251/9979 cut-off events. For 300489/300597 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 64515 event pairs, 1857 based on Foata normal form. 10/9708 useless extension candidates. Maximal degree in co-relation 63598. Up to 8791 conditions per place. [2024-06-27 18:37:09,952 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 299 selfloop transitions, 37 changer transitions 0/351 dead transitions. [2024-06-27 18:37:09,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 351 transitions, 5083 flow [2024-06-27 18:37:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:37:09,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 18:37:09,953 INFO L175 Difference]: Start difference. First operand has 202 places, 311 transitions, 4020 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:37:09,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 351 transitions, 5083 flow [2024-06-27 18:37:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 351 transitions, 5019 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:10,492 INFO L231 Difference]: Finished difference. Result has 206 places, 323 transitions, 4253 flow [2024-06-27 18:37:10,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4253, PETRI_PLACES=206, PETRI_TRANSITIONS=323} [2024-06-27 18:37:10,493 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-27 18:37:10,493 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 323 transitions, 4253 flow [2024-06-27 18:37:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:10,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:10,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:10,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:37:10,494 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:10,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1272518948, now seen corresponding path program 2 times [2024-06-27 18:37:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061342638] [2024-06-27 18:37:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061342638] [2024-06-27 18:37:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061342638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:11,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:11,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325810654] [2024-06-27 18:37:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:11,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:11,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 323 transitions, 4253 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:11,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:11,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:11,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:12,899 INFO L124 PetriNetUnfolderBase]: 6495/10308 cut-off events. [2024-06-27 18:37:12,899 INFO L125 PetriNetUnfolderBase]: For 313318/313332 co-relation queries the response was YES. [2024-06-27 18:37:12,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66410 conditions, 10308 events. 6495/10308 cut-off events. For 313318/313332 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65959 event pairs, 2000 based on Foata normal form. 9/10087 useless extension candidates. Maximal degree in co-relation 66313. Up to 9237 conditions per place. [2024-06-27 18:37:13,042 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 317 selfloop transitions, 32 changer transitions 0/358 dead transitions. [2024-06-27 18:37:13,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 358 transitions, 5346 flow [2024-06-27 18:37:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:13,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:37:13,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:37:13,044 INFO L175 Difference]: Start difference. First operand has 206 places, 323 transitions, 4253 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:37:13,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 358 transitions, 5346 flow [2024-06-27 18:37:13,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 358 transitions, 5244 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:13,733 INFO L231 Difference]: Finished difference. Result has 210 places, 329 transitions, 4343 flow [2024-06-27 18:37:13,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4343, PETRI_PLACES=210, PETRI_TRANSITIONS=329} [2024-06-27 18:37:13,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 18:37:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 329 transitions, 4343 flow [2024-06-27 18:37:13,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:13,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:13,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:37:13,734 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1272251821, now seen corresponding path program 3 times [2024-06-27 18:37:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:13,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268180053] [2024-06-27 18:37:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:14,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268180053] [2024-06-27 18:37:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268180053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:14,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:14,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771655137] [2024-06-27 18:37:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:14,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:14,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:14,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:37:14,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 329 transitions, 4343 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:14,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:14,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:37:14,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:16,056 INFO L124 PetriNetUnfolderBase]: 6250/10110 cut-off events. [2024-06-27 18:37:16,056 INFO L125 PetriNetUnfolderBase]: For 330032/330178 co-relation queries the response was YES. [2024-06-27 18:37:16,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66202 conditions, 10110 events. 6250/10110 cut-off events. For 330032/330178 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66497 event pairs, 1842 based on Foata normal form. 13/9811 useless extension candidates. Maximal degree in co-relation 66103. Up to 8755 conditions per place. [2024-06-27 18:37:16,402 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 305 selfloop transitions, 51 changer transitions 0/373 dead transitions. [2024-06-27 18:37:16,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 373 transitions, 5595 flow [2024-06-27 18:37:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:37:16,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:37:16,404 INFO L175 Difference]: Start difference. First operand has 210 places, 329 transitions, 4343 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:37:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 373 transitions, 5595 flow [2024-06-27 18:37:16,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 373 transitions, 5513 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:16,998 INFO L231 Difference]: Finished difference. Result has 216 places, 347 transitions, 4755 flow [2024-06-27 18:37:16,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4755, PETRI_PLACES=216, PETRI_TRANSITIONS=347} [2024-06-27 18:37:16,998 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-27 18:37:16,998 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 347 transitions, 4755 flow [2024-06-27 18:37:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:16,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:16,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:37:16,999 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:16,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 409809632, now seen corresponding path program 3 times [2024-06-27 18:37:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997316257] [2024-06-27 18:37:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997316257] [2024-06-27 18:37:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997316257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35993258] [2024-06-27 18:37:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:17,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:17,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 347 transitions, 4755 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:17,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:17,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:17,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:19,416 INFO L124 PetriNetUnfolderBase]: 6486/10300 cut-off events. [2024-06-27 18:37:19,416 INFO L125 PetriNetUnfolderBase]: For 340157/340171 co-relation queries the response was YES. [2024-06-27 18:37:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68818 conditions, 10300 events. 6486/10300 cut-off events. For 340157/340171 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 65960 event pairs, 2000 based on Foata normal form. 9/10078 useless extension candidates. Maximal degree in co-relation 68715. Up to 9226 conditions per place. [2024-06-27 18:37:19,565 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 333 selfloop transitions, 35 changer transitions 0/377 dead transitions. [2024-06-27 18:37:19,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 377 transitions, 5735 flow [2024-06-27 18:37:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:37:19,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:37:19,566 INFO L175 Difference]: Start difference. First operand has 216 places, 347 transitions, 4755 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:37:19,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 377 transitions, 5735 flow [2024-06-27 18:37:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 377 transitions, 5519 flow, removed 98 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:20,340 INFO L231 Difference]: Finished difference. Result has 221 places, 347 transitions, 4640 flow [2024-06-27 18:37:20,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4563, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4640, PETRI_PLACES=221, PETRI_TRANSITIONS=347} [2024-06-27 18:37:20,341 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 18:37:20,341 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 347 transitions, 4640 flow [2024-06-27 18:37:20,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:20,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:20,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:20,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:37:20,341 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:20,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1650725352, now seen corresponding path program 1 times [2024-06-27 18:37:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85941267] [2024-06-27 18:37:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:20,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:20,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85941267] [2024-06-27 18:37:20,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85941267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:20,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:20,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:37:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708670189] [2024-06-27 18:37:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:20,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:37:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:37:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:37:21,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:37:21,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 347 transitions, 4640 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:21,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:21,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:37:21,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:23,151 INFO L124 PetriNetUnfolderBase]: 7133/11178 cut-off events. [2024-06-27 18:37:23,151 INFO L125 PetriNetUnfolderBase]: For 403975/404001 co-relation queries the response was YES. [2024-06-27 18:37:23,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75578 conditions, 11178 events. 7133/11178 cut-off events. For 403975/404001 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 71176 event pairs, 2200 based on Foata normal form. 24/10936 useless extension candidates. Maximal degree in co-relation 75473. Up to 9980 conditions per place. [2024-06-27 18:37:23,291 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 341 selfloop transitions, 44 changer transitions 0/393 dead transitions. [2024-06-27 18:37:23,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 393 transitions, 5690 flow [2024-06-27 18:37:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:37:23,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:37:23,292 INFO L175 Difference]: Start difference. First operand has 221 places, 347 transitions, 4640 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:37:23,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 393 transitions, 5690 flow [2024-06-27 18:37:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 393 transitions, 5596 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:24,371 INFO L231 Difference]: Finished difference. Result has 223 places, 351 transitions, 4727 flow [2024-06-27 18:37:24,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4727, PETRI_PLACES=223, PETRI_TRANSITIONS=351} [2024-06-27 18:37:24,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-27 18:37:24,372 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 351 transitions, 4727 flow [2024-06-27 18:37:24,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:24,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:24,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:24,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:37:24,372 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:24,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash -416954228, now seen corresponding path program 1 times [2024-06-27 18:37:24,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:24,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583758570] [2024-06-27 18:37:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583758570] [2024-06-27 18:37:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583758570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086970083] [2024-06-27 18:37:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:24,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:24,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:24,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 351 transitions, 4727 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:24,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:24,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:24,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:27,029 INFO L124 PetriNetUnfolderBase]: 6972/11023 cut-off events. [2024-06-27 18:37:27,029 INFO L125 PetriNetUnfolderBase]: For 427727/427910 co-relation queries the response was YES. [2024-06-27 18:37:27,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76687 conditions, 11023 events. 6972/11023 cut-off events. For 427727/427910 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 71254 event pairs, 2048 based on Foata normal form. 16/10722 useless extension candidates. Maximal degree in co-relation 76581. Up to 9645 conditions per place. [2024-06-27 18:37:27,170 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 331 selfloop transitions, 41 changer transitions 0/389 dead transitions. [2024-06-27 18:37:27,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 389 transitions, 5683 flow [2024-06-27 18:37:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:37:27,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:37:27,172 INFO L175 Difference]: Start difference. First operand has 223 places, 351 transitions, 4727 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:37:27,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 389 transitions, 5683 flow [2024-06-27 18:37:27,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 389 transitions, 5542 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:27,868 INFO L231 Difference]: Finished difference. Result has 225 places, 356 transitions, 4755 flow [2024-06-27 18:37:27,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4588, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4755, PETRI_PLACES=225, PETRI_TRANSITIONS=356} [2024-06-27 18:37:27,869 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-27 18:37:27,869 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 356 transitions, 4755 flow [2024-06-27 18:37:27,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:27,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:27,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:27,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:37:27,870 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:27,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash -411210548, now seen corresponding path program 2 times [2024-06-27 18:37:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:27,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376775262] [2024-06-27 18:37:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376775262] [2024-06-27 18:37:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376775262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:28,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:28,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712739212] [2024-06-27 18:37:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:28,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:28,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:28,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 356 transitions, 4755 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:28,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:28,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:28,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:30,413 INFO L124 PetriNetUnfolderBase]: 6989/11043 cut-off events. [2024-06-27 18:37:30,413 INFO L125 PetriNetUnfolderBase]: For 437414/437576 co-relation queries the response was YES. [2024-06-27 18:37:30,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76905 conditions, 11043 events. 6989/11043 cut-off events. For 437414/437576 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 71367 event pairs, 2037 based on Foata normal form. 16/10743 useless extension candidates. Maximal degree in co-relation 76798. Up to 9537 conditions per place. [2024-06-27 18:37:30,572 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 324 selfloop transitions, 50 changer transitions 0/391 dead transitions. [2024-06-27 18:37:30,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 391 transitions, 5825 flow [2024-06-27 18:37:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:37:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:37:30,573 INFO L175 Difference]: Start difference. First operand has 225 places, 356 transitions, 4755 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:37:30,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 391 transitions, 5825 flow [2024-06-27 18:37:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 391 transitions, 5754 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:31,531 INFO L231 Difference]: Finished difference. Result has 229 places, 359 transitions, 4853 flow [2024-06-27 18:37:31,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4684, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4853, PETRI_PLACES=229, PETRI_TRANSITIONS=359} [2024-06-27 18:37:31,531 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 18:37:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 359 transitions, 4853 flow [2024-06-27 18:37:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:31,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:37:31,532 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -411202054, now seen corresponding path program 2 times [2024-06-27 18:37:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507705799] [2024-06-27 18:37:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507705799] [2024-06-27 18:37:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507705799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:32,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:32,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:37:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069435708] [2024-06-27 18:37:32,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:32,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:37:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:37:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:37:32,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:37:32,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 359 transitions, 4853 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:32,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:32,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:37:32,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:34,286 INFO L124 PetriNetUnfolderBase]: 7301/11414 cut-off events. [2024-06-27 18:37:34,286 INFO L125 PetriNetUnfolderBase]: For 454160/454174 co-relation queries the response was YES. [2024-06-27 18:37:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79609 conditions, 11414 events. 7301/11414 cut-off events. For 454160/454174 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 72656 event pairs, 2204 based on Foata normal form. 10/11156 useless extension candidates. Maximal degree in co-relation 79501. Up to 9927 conditions per place. [2024-06-27 18:37:34,438 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 340 selfloop transitions, 59 changer transitions 0/407 dead transitions. [2024-06-27 18:37:34,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 407 transitions, 6273 flow [2024-06-27 18:37:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:37:34,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:37:34,439 INFO L175 Difference]: Start difference. First operand has 229 places, 359 transitions, 4853 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:37:34,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 407 transitions, 6273 flow [2024-06-27 18:37:35,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 407 transitions, 6167 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:35,701 INFO L231 Difference]: Finished difference. Result has 234 places, 367 transitions, 5067 flow [2024-06-27 18:37:35,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5067, PETRI_PLACES=234, PETRI_TRANSITIONS=367} [2024-06-27 18:37:35,702 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-27 18:37:35,702 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 367 transitions, 5067 flow [2024-06-27 18:37:35,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:35,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:35,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:35,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:37:35,702 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:35,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash -411201620, now seen corresponding path program 1 times [2024-06-27 18:37:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995444693] [2024-06-27 18:37:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:36,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995444693] [2024-06-27 18:37:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995444693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:36,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:36,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:37:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6321363] [2024-06-27 18:37:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:37:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:37:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:37:36,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:37:36,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 367 transitions, 5067 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:36,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:36,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:37:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:38,549 INFO L124 PetriNetUnfolderBase]: 7321/11468 cut-off events. [2024-06-27 18:37:38,549 INFO L125 PetriNetUnfolderBase]: For 478630/478644 co-relation queries the response was YES. [2024-06-27 18:37:38,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81804 conditions, 11468 events. 7321/11468 cut-off events. For 478630/478644 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 73112 event pairs, 2251 based on Foata normal form. 15/11210 useless extension candidates. Maximal degree in co-relation 81694. Up to 10415 conditions per place. [2024-06-27 18:37:38,711 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 379 selfloop transitions, 21 changer transitions 0/408 dead transitions. [2024-06-27 18:37:38,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 408 transitions, 6151 flow [2024-06-27 18:37:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:37:38,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 18:37:38,713 INFO L175 Difference]: Start difference. First operand has 234 places, 367 transitions, 5067 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:37:38,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 408 transitions, 6151 flow [2024-06-27 18:37:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 408 transitions, 5991 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:39,835 INFO L231 Difference]: Finished difference. Result has 238 places, 370 transitions, 5031 flow [2024-06-27 18:37:39,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5031, PETRI_PLACES=238, PETRI_TRANSITIONS=370} [2024-06-27 18:37:39,836 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:37:39,836 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 370 transitions, 5031 flow [2024-06-27 18:37:39,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:39,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:39,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:37:39,836 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:39,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1641442092, now seen corresponding path program 3 times [2024-06-27 18:37:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378619142] [2024-06-27 18:37:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378619142] [2024-06-27 18:37:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378619142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:40,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:37:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47842030] [2024-06-27 18:37:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:40,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:37:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:37:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:37:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:37:40,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 370 transitions, 5031 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:37:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:42,827 INFO L124 PetriNetUnfolderBase]: 7340/11482 cut-off events. [2024-06-27 18:37:42,827 INFO L125 PetriNetUnfolderBase]: For 489352/489366 co-relation queries the response was YES. [2024-06-27 18:37:42,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82500 conditions, 11482 events. 7340/11482 cut-off events. For 489352/489366 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 73191 event pairs, 2205 based on Foata normal form. 10/11221 useless extension candidates. Maximal degree in co-relation 82388. Up to 9976 conditions per place. [2024-06-27 18:37:42,965 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 341 selfloop transitions, 63 changer transitions 0/412 dead transitions. [2024-06-27 18:37:42,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 412 transitions, 6238 flow [2024-06-27 18:37:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:37:42,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:37:42,966 INFO L175 Difference]: Start difference. First operand has 238 places, 370 transitions, 5031 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:37:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 412 transitions, 6238 flow [2024-06-27 18:37:44,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 412 transitions, 6144 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:44,295 INFO L231 Difference]: Finished difference. Result has 240 places, 374 transitions, 5153 flow [2024-06-27 18:37:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5153, PETRI_PLACES=240, PETRI_TRANSITIONS=374} [2024-06-27 18:37:44,295 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-27 18:37:44,295 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 374 transitions, 5153 flow [2024-06-27 18:37:44,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:37:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:44,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:37:44,296 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1982312018, now seen corresponding path program 3 times [2024-06-27 18:37:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531533016] [2024-06-27 18:37:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531533016] [2024-06-27 18:37:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531533016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336883883] [2024-06-27 18:37:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:44,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:45,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:45,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 374 transitions, 5153 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:45,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:45,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:45,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:47,078 INFO L124 PetriNetUnfolderBase]: 7124/11251 cut-off events. [2024-06-27 18:37:47,078 INFO L125 PetriNetUnfolderBase]: For 507304/507535 co-relation queries the response was YES. [2024-06-27 18:37:47,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82199 conditions, 11251 events. 7124/11251 cut-off events. For 507304/507535 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72831 event pairs, 2073 based on Foata normal form. 25/10943 useless extension candidates. Maximal degree in co-relation 82086. Up to 9842 conditions per place. [2024-06-27 18:37:47,241 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 345 selfloop transitions, 41 changer transitions 0/406 dead transitions. [2024-06-27 18:37:47,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 406 transitions, 6069 flow [2024-06-27 18:37:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:37:47,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:37:47,243 INFO L175 Difference]: Start difference. First operand has 240 places, 374 transitions, 5153 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:37:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 406 transitions, 6069 flow [2024-06-27 18:37:48,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 406 transitions, 5898 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:48,389 INFO L231 Difference]: Finished difference. Result has 242 places, 374 transitions, 5071 flow [2024-06-27 18:37:48,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5071, PETRI_PLACES=242, PETRI_TRANSITIONS=374} [2024-06-27 18:37:48,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 18:37:48,390 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 374 transitions, 5071 flow [2024-06-27 18:37:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:48,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:48,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:48,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:37:48,391 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:48,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 627790314, now seen corresponding path program 4 times [2024-06-27 18:37:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350554337] [2024-06-27 18:37:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350554337] [2024-06-27 18:37:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350554337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649487683] [2024-06-27 18:37:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:49,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:49,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 374 transitions, 5071 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:49,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:49,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:51,037 INFO L124 PetriNetUnfolderBase]: 7144/11279 cut-off events. [2024-06-27 18:37:51,037 INFO L125 PetriNetUnfolderBase]: For 516732/516963 co-relation queries the response was YES. [2024-06-27 18:37:51,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82242 conditions, 11279 events. 7144/11279 cut-off events. For 516732/516963 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 72942 event pairs, 2056 based on Foata normal form. 25/10970 useless extension candidates. Maximal degree in co-relation 82128. Up to 9810 conditions per place. [2024-06-27 18:37:51,244 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 336 selfloop transitions, 53 changer transitions 0/409 dead transitions. [2024-06-27 18:37:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 409 transitions, 6093 flow [2024-06-27 18:37:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:37:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:37:51,246 INFO L175 Difference]: Start difference. First operand has 242 places, 374 transitions, 5071 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:37:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 409 transitions, 6093 flow [2024-06-27 18:37:52,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 409 transitions, 5908 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:52,708 INFO L231 Difference]: Finished difference. Result has 241 places, 377 transitions, 5061 flow [2024-06-27 18:37:52,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5061, PETRI_PLACES=241, PETRI_TRANSITIONS=377} [2024-06-27 18:37:52,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-27 18:37:52,709 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 377 transitions, 5061 flow [2024-06-27 18:37:52,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:52,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:52,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:52,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:37:52,710 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:52,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash 779380512, now seen corresponding path program 5 times [2024-06-27 18:37:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:52,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956977245] [2024-06-27 18:37:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:53,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956977245] [2024-06-27 18:37:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956977245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:53,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:53,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:53,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087142728] [2024-06-27 18:37:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:53,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:53,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 377 transitions, 5061 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:53,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:53,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:55,508 INFO L124 PetriNetUnfolderBase]: 7171/11324 cut-off events. [2024-06-27 18:37:55,508 INFO L125 PetriNetUnfolderBase]: For 527725/527957 co-relation queries the response was YES. [2024-06-27 18:37:55,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82512 conditions, 11324 events. 7171/11324 cut-off events. For 527725/527957 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 73403 event pairs, 2049 based on Foata normal form. 27/11020 useless extension candidates. Maximal degree in co-relation 82397. Up to 9613 conditions per place. [2024-06-27 18:37:55,670 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 319 selfloop transitions, 74 changer transitions 0/413 dead transitions. [2024-06-27 18:37:55,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 413 transitions, 6257 flow [2024-06-27 18:37:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:37:55,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:37:55,671 INFO L175 Difference]: Start difference. First operand has 241 places, 377 transitions, 5061 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:37:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 413 transitions, 6257 flow [2024-06-27 18:37:56,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 413 transitions, 6124 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:56,868 INFO L231 Difference]: Finished difference. Result has 243 places, 380 transitions, 5148 flow [2024-06-27 18:37:56,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5148, PETRI_PLACES=243, PETRI_TRANSITIONS=380} [2024-06-27 18:37:56,869 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 18:37:56,869 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 380 transitions, 5148 flow [2024-06-27 18:37:56,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:56,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:56,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:37:56,870 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:56,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 785094432, now seen corresponding path program 6 times [2024-06-27 18:37:56,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:56,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420892694] [2024-06-27 18:37:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:57,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420892694] [2024-06-27 18:37:57,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420892694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:57,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:57,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:57,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775986856] [2024-06-27 18:37:57,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:57,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:57,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:57,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:57,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 380 transitions, 5148 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:57,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:57,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:57,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:59,743 INFO L124 PetriNetUnfolderBase]: 7166/11308 cut-off events. [2024-06-27 18:37:59,743 INFO L125 PetriNetUnfolderBase]: For 536225/536457 co-relation queries the response was YES. [2024-06-27 18:37:59,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82713 conditions, 11308 events. 7166/11308 cut-off events. For 536225/536457 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 73186 event pairs, 2045 based on Foata normal form. 26/11005 useless extension candidates. Maximal degree in co-relation 82597. Up to 9608 conditions per place. [2024-06-27 18:37:59,865 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 315 selfloop transitions, 77 changer transitions 0/412 dead transitions. [2024-06-27 18:37:59,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 412 transitions, 6164 flow [2024-06-27 18:37:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:37:59,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:37:59,867 INFO L175 Difference]: Start difference. First operand has 243 places, 380 transitions, 5148 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:37:59,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 412 transitions, 6164 flow [2024-06-27 18:38:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 412 transitions, 5973 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:00,922 INFO L231 Difference]: Finished difference. Result has 246 places, 380 transitions, 5118 flow [2024-06-27 18:38:00,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5118, PETRI_PLACES=246, PETRI_TRANSITIONS=380} [2024-06-27 18:38:00,922 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-27 18:38:00,923 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 380 transitions, 5118 flow [2024-06-27 18:38:00,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:00,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:00,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:38:00,923 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:00,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash -956860420, now seen corresponding path program 4 times [2024-06-27 18:38:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617796609] [2024-06-27 18:38:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:01,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617796609] [2024-06-27 18:38:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617796609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:01,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:01,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195734719] [2024-06-27 18:38:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:01,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:01,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 380 transitions, 5118 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:01,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:01,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:01,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:03,766 INFO L124 PetriNetUnfolderBase]: 7477/11650 cut-off events. [2024-06-27 18:38:03,766 INFO L125 PetriNetUnfolderBase]: For 552774/552796 co-relation queries the response was YES. [2024-06-27 18:38:03,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85270 conditions, 11650 events. 7477/11650 cut-off events. For 552774/552796 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 73955 event pairs, 2162 based on Foata normal form. 13/11390 useless extension candidates. Maximal degree in co-relation 85153. Up to 9780 conditions per place. [2024-06-27 18:38:03,979 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 322 selfloop transitions, 103 changer transitions 0/433 dead transitions. [2024-06-27 18:38:03,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 433 transitions, 6810 flow [2024-06-27 18:38:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:38:03,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:38:03,980 INFO L175 Difference]: Start difference. First operand has 246 places, 380 transitions, 5118 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:38:03,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 433 transitions, 6810 flow [2024-06-27 18:38:05,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 433 transitions, 6611 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:05,328 INFO L231 Difference]: Finished difference. Result has 248 places, 391 transitions, 5402 flow [2024-06-27 18:38:05,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4919, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5402, PETRI_PLACES=248, PETRI_TRANSITIONS=391} [2024-06-27 18:38:05,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-27 18:38:05,329 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 391 transitions, 5402 flow [2024-06-27 18:38:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:05,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:05,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:05,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:38:05,329 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:05,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash 779376916, now seen corresponding path program 5 times [2024-06-27 18:38:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:05,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067730022] [2024-06-27 18:38:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:06,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067730022] [2024-06-27 18:38:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067730022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:06,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:06,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969911959] [2024-06-27 18:38:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:06,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:06,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 391 transitions, 5402 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:06,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:06,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:06,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:08,253 INFO L124 PetriNetUnfolderBase]: 7540/11745 cut-off events. [2024-06-27 18:38:08,254 INFO L125 PetriNetUnfolderBase]: For 584860/584882 co-relation queries the response was YES. [2024-06-27 18:38:08,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88263 conditions, 11745 events. 7540/11745 cut-off events. For 584860/584882 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 74563 event pairs, 2192 based on Foata normal form. 13/11488 useless extension candidates. Maximal degree in co-relation 88144. Up to 9839 conditions per place. [2024-06-27 18:38:08,457 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 325 selfloop transitions, 108 changer transitions 0/441 dead transitions. [2024-06-27 18:38:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 441 transitions, 7162 flow [2024-06-27 18:38:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:38:08,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:38:08,458 INFO L175 Difference]: Start difference. First operand has 248 places, 391 transitions, 5402 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:38:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 441 transitions, 7162 flow [2024-06-27 18:38:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 441 transitions, 6915 flow, removed 85 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:09,821 INFO L231 Difference]: Finished difference. Result has 254 places, 400 transitions, 5664 flow [2024-06-27 18:38:09,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5183, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5664, PETRI_PLACES=254, PETRI_TRANSITIONS=400} [2024-06-27 18:38:09,822 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 18:38:09,822 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 400 transitions, 5664 flow [2024-06-27 18:38:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:09,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:09,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:38:09,823 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 779389006, now seen corresponding path program 6 times [2024-06-27 18:38:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166731130] [2024-06-27 18:38:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166731130] [2024-06-27 18:38:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166731130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:10,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:10,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639050075] [2024-06-27 18:38:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:10,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:10,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 400 transitions, 5664 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:10,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:10,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:10,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:12,900 INFO L124 PetriNetUnfolderBase]: 7536/11734 cut-off events. [2024-06-27 18:38:12,901 INFO L125 PetriNetUnfolderBase]: For 592148/592168 co-relation queries the response was YES. [2024-06-27 18:38:13,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88196 conditions, 11734 events. 7536/11734 cut-off events. For 592148/592168 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 74422 event pairs, 2190 based on Foata normal form. 12/11477 useless extension candidates. Maximal degree in co-relation 88074. Up to 9837 conditions per place. [2024-06-27 18:38:13,109 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 330 selfloop transitions, 103 changer transitions 0/441 dead transitions. [2024-06-27 18:38:13,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 441 transitions, 7182 flow [2024-06-27 18:38:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:38:13,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:38:13,111 INFO L175 Difference]: Start difference. First operand has 254 places, 400 transitions, 5664 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:38:13,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 441 transitions, 7182 flow [2024-06-27 18:38:14,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 441 transitions, 6887 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:14,604 INFO L231 Difference]: Finished difference. Result has 258 places, 400 transitions, 5583 flow [2024-06-27 18:38:14,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5583, PETRI_PLACES=258, PETRI_TRANSITIONS=400} [2024-06-27 18:38:14,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-27 18:38:14,605 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 400 transitions, 5583 flow [2024-06-27 18:38:14,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:14,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:14,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:38:14,606 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:14,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:14,606 INFO L85 PathProgramCache]: Analyzing trace with hash 793199010, now seen corresponding path program 2 times [2024-06-27 18:38:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401952289] [2024-06-27 18:38:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401952289] [2024-06-27 18:38:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401952289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621620628] [2024-06-27 18:38:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:15,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:15,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:15,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 400 transitions, 5583 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:15,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:15,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:17,680 INFO L124 PetriNetUnfolderBase]: 7587/11887 cut-off events. [2024-06-27 18:38:17,681 INFO L125 PetriNetUnfolderBase]: For 595205/595235 co-relation queries the response was YES. [2024-06-27 18:38:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88466 conditions, 11887 events. 7587/11887 cut-off events. For 595205/595235 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 76055 event pairs, 2236 based on Foata normal form. 25/11627 useless extension candidates. Maximal degree in co-relation 88343. Up to 10659 conditions per place. [2024-06-27 18:38:17,843 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 398 selfloop transitions, 44 changer transitions 0/450 dead transitions. [2024-06-27 18:38:17,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 450 transitions, 7234 flow [2024-06-27 18:38:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 18:38:17,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-27 18:38:17,844 INFO L175 Difference]: Start difference. First operand has 258 places, 400 transitions, 5583 flow. Second operand 8 states and 177 transitions. [2024-06-27 18:38:17,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 450 transitions, 7234 flow [2024-06-27 18:38:19,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 450 transitions, 6940 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:19,288 INFO L231 Difference]: Finished difference. Result has 258 places, 411 transitions, 5667 flow [2024-06-27 18:38:19,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5667, PETRI_PLACES=258, PETRI_TRANSITIONS=411} [2024-06-27 18:38:19,289 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-27 18:38:19,289 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 411 transitions, 5667 flow [2024-06-27 18:38:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:19,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:19,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:19,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:38:19,290 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -172236570, now seen corresponding path program 3 times [2024-06-27 18:38:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156840166] [2024-06-27 18:38:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:19,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156840166] [2024-06-27 18:38:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156840166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:20,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154239129] [2024-06-27 18:38:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:20,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:20,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 411 transitions, 5667 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:20,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:20,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:20,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:22,618 INFO L124 PetriNetUnfolderBase]: 7584/11877 cut-off events. [2024-06-27 18:38:22,618 INFO L125 PetriNetUnfolderBase]: For 611107/611137 co-relation queries the response was YES. [2024-06-27 18:38:22,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88551 conditions, 11877 events. 7584/11877 cut-off events. For 611107/611137 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 76007 event pairs, 2233 based on Foata normal form. 25/11619 useless extension candidates. Maximal degree in co-relation 88428. Up to 10656 conditions per place. [2024-06-27 18:38:22,759 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 395 selfloop transitions, 46 changer transitions 0/449 dead transitions. [2024-06-27 18:38:22,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 449 transitions, 6936 flow [2024-06-27 18:38:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:38:22,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-27 18:38:22,760 INFO L175 Difference]: Start difference. First operand has 258 places, 411 transitions, 5667 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:38:22,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 449 transitions, 6936 flow [2024-06-27 18:38:24,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 449 transitions, 6775 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:24,023 INFO L231 Difference]: Finished difference. Result has 263 places, 411 transitions, 5604 flow [2024-06-27 18:38:24,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5604, PETRI_PLACES=263, PETRI_TRANSITIONS=411} [2024-06-27 18:38:24,023 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-27 18:38:24,024 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 411 transitions, 5604 flow [2024-06-27 18:38:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:24,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:24,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:24,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:38:24,024 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:24,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash 779389440, now seen corresponding path program 4 times [2024-06-27 18:38:24,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581417402] [2024-06-27 18:38:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581417402] [2024-06-27 18:38:24,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581417402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:24,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:24,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:24,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672850313] [2024-06-27 18:38:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:24,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:24,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:24,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:38:24,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 411 transitions, 5604 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:24,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:24,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:38:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:27,325 INFO L124 PetriNetUnfolderBase]: 7581/11873 cut-off events. [2024-06-27 18:38:27,325 INFO L125 PetriNetUnfolderBase]: For 617172/617202 co-relation queries the response was YES. [2024-06-27 18:38:27,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88463 conditions, 11873 events. 7581/11873 cut-off events. For 617172/617202 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 75924 event pairs, 2239 based on Foata normal form. 25/11615 useless extension candidates. Maximal degree in co-relation 88338. Up to 10653 conditions per place. [2024-06-27 18:38:27,523 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 397 selfloop transitions, 44 changer transitions 0/449 dead transitions. [2024-06-27 18:38:27,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 449 transitions, 6754 flow [2024-06-27 18:38:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:38:27,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:38:27,524 INFO L175 Difference]: Start difference. First operand has 263 places, 411 transitions, 5604 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:38:27,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 449 transitions, 6754 flow [2024-06-27 18:38:29,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 449 transitions, 6612 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:29,385 INFO L231 Difference]: Finished difference. Result has 265 places, 412 transitions, 5565 flow [2024-06-27 18:38:29,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5565, PETRI_PLACES=265, PETRI_TRANSITIONS=412} [2024-06-27 18:38:29,386 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-27 18:38:29,386 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 412 transitions, 5565 flow [2024-06-27 18:38:29,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:38:29,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:29,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:29,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:38:29,387 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:29,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash -443445856, now seen corresponding path program 1 times [2024-06-27 18:38:29,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:29,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334010488] [2024-06-27 18:38:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:29,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:30,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334010488] [2024-06-27 18:38:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334010488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:30,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:30,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992237266] [2024-06-27 18:38:30,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:30,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:30,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:38:30,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 412 transitions, 5565 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:30,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:30,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:38:30,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:32,742 INFO L124 PetriNetUnfolderBase]: 6972/11176 cut-off events. [2024-06-27 18:38:32,742 INFO L125 PetriNetUnfolderBase]: For 628616/628934 co-relation queries the response was YES. [2024-06-27 18:38:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84724 conditions, 11176 events. 6972/11176 cut-off events. For 628616/628934 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 73768 event pairs, 1995 based on Foata normal form. 20/10817 useless extension candidates. Maximal degree in co-relation 84598. Up to 9647 conditions per place. [2024-06-27 18:38:32,906 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 381 selfloop transitions, 31 changer transitions 0/443 dead transitions. [2024-06-27 18:38:32,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 443 transitions, 6571 flow [2024-06-27 18:38:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:38:32,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:38:32,907 INFO L175 Difference]: Start difference. First operand has 265 places, 412 transitions, 5565 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:38:32,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 443 transitions, 6571 flow [2024-06-27 18:38:34,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 443 transitions, 6362 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:34,567 INFO L231 Difference]: Finished difference. Result has 267 places, 415 transitions, 5510 flow [2024-06-27 18:38:34,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5510, PETRI_PLACES=267, PETRI_TRANSITIONS=415} [2024-06-27 18:38:34,567 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-27 18:38:34,567 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 415 transitions, 5510 flow [2024-06-27 18:38:34,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:38:34,568 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:34,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash -443354530, now seen corresponding path program 1 times [2024-06-27 18:38:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473311573] [2024-06-27 18:38:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473311573] [2024-06-27 18:38:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473311573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214119732] [2024-06-27 18:38:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:35,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:35,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:35,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:38:35,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 415 transitions, 5510 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:35,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:35,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:38:35,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,480 INFO L124 PetriNetUnfolderBase]: 7291/11534 cut-off events. [2024-06-27 18:38:37,480 INFO L125 PetriNetUnfolderBase]: For 638891/638927 co-relation queries the response was YES. [2024-06-27 18:38:37,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86638 conditions, 11534 events. 7291/11534 cut-off events. For 638891/638927 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 74847 event pairs, 2176 based on Foata normal form. 2/11252 useless extension candidates. Maximal degree in co-relation 86511. Up to 10271 conditions per place. [2024-06-27 18:38:37,646 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 405 selfloop transitions, 33 changer transitions 0/452 dead transitions. [2024-06-27 18:38:37,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 452 transitions, 6602 flow [2024-06-27 18:38:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:38:37,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:38:37,648 INFO L175 Difference]: Start difference. First operand has 267 places, 415 transitions, 5510 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:38:37,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 452 transitions, 6602 flow [2024-06-27 18:38:39,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 452 transitions, 6528 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:39,495 INFO L231 Difference]: Finished difference. Result has 270 places, 419 transitions, 5599 flow [2024-06-27 18:38:39,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5599, PETRI_PLACES=270, PETRI_TRANSITIONS=419} [2024-06-27 18:38:39,495 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-27 18:38:39,495 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 419 transitions, 5599 flow [2024-06-27 18:38:39,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:39,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:39,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:38:39,496 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:39,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash -408709406, now seen corresponding path program 2 times [2024-06-27 18:38:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:39,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733915696] [2024-06-27 18:38:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:40,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733915696] [2024-06-27 18:38:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733915696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:40,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288193754] [2024-06-27 18:38:40,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:40,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:40,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:38:40,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 419 transitions, 5599 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:40,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:40,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:38:40,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:42,730 INFO L124 PetriNetUnfolderBase]: 7373/11632 cut-off events. [2024-06-27 18:38:42,731 INFO L125 PetriNetUnfolderBase]: For 669933/669969 co-relation queries the response was YES. [2024-06-27 18:38:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89241 conditions, 11632 events. 7373/11632 cut-off events. For 669933/669969 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 75257 event pairs, 2165 based on Foata normal form. 2/11354 useless extension candidates. Maximal degree in co-relation 89113. Up to 10274 conditions per place. [2024-06-27 18:38:42,903 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 399 selfloop transitions, 56 changer transitions 0/469 dead transitions. [2024-06-27 18:38:42,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 469 transitions, 7247 flow [2024-06-27 18:38:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:38:42,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-27 18:38:42,904 INFO L175 Difference]: Start difference. First operand has 270 places, 419 transitions, 5599 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:38:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 469 transitions, 7247 flow [2024-06-27 18:38:44,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 469 transitions, 7112 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:44,651 INFO L231 Difference]: Finished difference. Result has 273 places, 435 transitions, 5950 flow [2024-06-27 18:38:44,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5464, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5950, PETRI_PLACES=273, PETRI_TRANSITIONS=435} [2024-06-27 18:38:44,652 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-27 18:38:44,652 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 435 transitions, 5950 flow [2024-06-27 18:38:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:44,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:44,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:44,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:38:44,652 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:44,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash -439599872, now seen corresponding path program 1 times [2024-06-27 18:38:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453696999] [2024-06-27 18:38:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:44,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:45,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:45,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453696999] [2024-06-27 18:38:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453696999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424387521] [2024-06-27 18:38:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:45,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:38:45,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 435 transitions, 5950 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:45,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:45,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:38:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:47,686 INFO L124 PetriNetUnfolderBase]: 7369/11628 cut-off events. [2024-06-27 18:38:47,687 INFO L125 PetriNetUnfolderBase]: For 694575/694611 co-relation queries the response was YES. [2024-06-27 18:38:47,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90752 conditions, 11628 events. 7369/11628 cut-off events. For 694575/694611 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 75200 event pairs, 2174 based on Foata normal form. 2/11352 useless extension candidates. Maximal degree in co-relation 90622. Up to 10412 conditions per place. [2024-06-27 18:38:47,867 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 432 selfloop transitions, 25 changer transitions 0/471 dead transitions. [2024-06-27 18:38:47,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 471 transitions, 7122 flow [2024-06-27 18:38:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:38:47,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-27 18:38:47,868 INFO L175 Difference]: Start difference. First operand has 273 places, 435 transitions, 5950 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:38:47,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 471 transitions, 7122 flow [2024-06-27 18:38:49,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 471 transitions, 6980 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:49,814 INFO L231 Difference]: Finished difference. Result has 278 places, 438 transitions, 5943 flow [2024-06-27 18:38:49,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5812, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5943, PETRI_PLACES=278, PETRI_TRANSITIONS=438} [2024-06-27 18:38:49,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 18:38:49,815 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 438 transitions, 5943 flow [2024-06-27 18:38:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:49,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:49,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:49,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:38:49,815 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:49,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash -439600120, now seen corresponding path program 3 times [2024-06-27 18:38:49,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:49,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269015657] [2024-06-27 18:38:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:49,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:50,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269015657] [2024-06-27 18:38:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269015657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072134464] [2024-06-27 18:38:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:50,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:38:50,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 438 transitions, 5943 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:50,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:50,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:38:50,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:52,984 INFO L124 PetriNetUnfolderBase]: 7363/11618 cut-off events. [2024-06-27 18:38:52,984 INFO L125 PetriNetUnfolderBase]: For 705179/705215 co-relation queries the response was YES. [2024-06-27 18:38:53,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91248 conditions, 11618 events. 7363/11618 cut-off events. For 705179/705215 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 75157 event pairs, 2154 based on Foata normal form. 2/11342 useless extension candidates. Maximal degree in co-relation 91116. Up to 10262 conditions per place. [2024-06-27 18:38:53,150 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 399 selfloop transitions, 58 changer transitions 0/471 dead transitions. [2024-06-27 18:38:53,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 471 transitions, 7139 flow [2024-06-27 18:38:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:38:53,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 18:38:53,151 INFO L175 Difference]: Start difference. First operand has 278 places, 438 transitions, 5943 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:38:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 471 transitions, 7139 flow [2024-06-27 18:38:55,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 471 transitions, 6988 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:55,107 INFO L231 Difference]: Finished difference. Result has 280 places, 438 transitions, 5916 flow [2024-06-27 18:38:55,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5916, PETRI_PLACES=280, PETRI_TRANSITIONS=438} [2024-06-27 18:38:55,107 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-06-27 18:38:55,107 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 438 transitions, 5916 flow [2024-06-27 18:38:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:55,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:38:55,108 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 785339704, now seen corresponding path program 4 times [2024-06-27 18:38:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860180623] [2024-06-27 18:38:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860180623] [2024-06-27 18:38:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860180623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401325756] [2024-06-27 18:38:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:55,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:38:55,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 438 transitions, 5916 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:55,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:55,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:38:55,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:58,379 INFO L124 PetriNetUnfolderBase]: 7428/11757 cut-off events. [2024-06-27 18:38:58,379 INFO L125 PetriNetUnfolderBase]: For 729701/729754 co-relation queries the response was YES. [2024-06-27 18:38:58,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92351 conditions, 11757 events. 7428/11757 cut-off events. For 729701/729754 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 76591 event pairs, 2141 based on Foata normal form. 2/11454 useless extension candidates. Maximal degree in co-relation 92218. Up to 10238 conditions per place. [2024-06-27 18:38:58,536 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 389 selfloop transitions, 89 changer transitions 0/492 dead transitions. [2024-06-27 18:38:58,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 492 transitions, 7647 flow [2024-06-27 18:38:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:38:58,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 18:38:58,537 INFO L175 Difference]: Start difference. First operand has 280 places, 438 transitions, 5916 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:38:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 492 transitions, 7647 flow [2024-06-27 18:38:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 492 transitions, 7522 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:59,941 INFO L231 Difference]: Finished difference. Result has 284 places, 459 transitions, 6500 flow [2024-06-27 18:38:59,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5791, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6500, PETRI_PLACES=284, PETRI_TRANSITIONS=459} [2024-06-27 18:38:59,941 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 18:38:59,941 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 459 transitions, 6500 flow [2024-06-27 18:38:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:59,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:59,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:38:59,942 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:59,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 793383522, now seen corresponding path program 2 times [2024-06-27 18:38:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390933118] [2024-06-27 18:38:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390933118] [2024-06-27 18:39:00,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390933118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:00,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:00,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:00,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215962112] [2024-06-27 18:39:00,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:00,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:00,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:00,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 459 transitions, 6500 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:00,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:00,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:00,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:03,385 INFO L124 PetriNetUnfolderBase]: 7482/11840 cut-off events. [2024-06-27 18:39:03,385 INFO L125 PetriNetUnfolderBase]: For 772814/772876 co-relation queries the response was YES. [2024-06-27 18:39:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95491 conditions, 11840 events. 7482/11840 cut-off events. For 772814/772876 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 77218 event pairs, 2182 based on Foata normal form. 10/11545 useless extension candidates. Maximal degree in co-relation 95355. Up to 10446 conditions per place. [2024-06-27 18:39:03,568 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 435 selfloop transitions, 59 changer transitions 0/508 dead transitions. [2024-06-27 18:39:03,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 508 transitions, 8346 flow [2024-06-27 18:39:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:39:03,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:39:03,569 INFO L175 Difference]: Start difference. First operand has 284 places, 459 transitions, 6500 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:39:03,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 508 transitions, 8346 flow [2024-06-27 18:39:05,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 508 transitions, 8034 flow, removed 126 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:05,404 INFO L231 Difference]: Finished difference. Result has 289 places, 468 transitions, 6590 flow [2024-06-27 18:39:05,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6225, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6590, PETRI_PLACES=289, PETRI_TRANSITIONS=468} [2024-06-27 18:39:05,404 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 235 predicate places. [2024-06-27 18:39:05,405 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 468 transitions, 6590 flow [2024-06-27 18:39:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:05,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:05,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:39:05,405 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:05,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash -172230618, now seen corresponding path program 3 times [2024-06-27 18:39:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:05,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785624199] [2024-06-27 18:39:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785624199] [2024-06-27 18:39:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785624199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825322837] [2024-06-27 18:39:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:06,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:06,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 468 transitions, 6590 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:06,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:06,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:06,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:08,788 INFO L124 PetriNetUnfolderBase]: 7476/11837 cut-off events. [2024-06-27 18:39:08,788 INFO L125 PetriNetUnfolderBase]: For 785950/786016 co-relation queries the response was YES. [2024-06-27 18:39:08,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96020 conditions, 11837 events. 7476/11837 cut-off events. For 785950/786016 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 77289 event pairs, 2147 based on Foata normal form. 10/11538 useless extension candidates. Maximal degree in co-relation 95882. Up to 10441 conditions per place. [2024-06-27 18:39:08,972 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 429 selfloop transitions, 63 changer transitions 0/506 dead transitions. [2024-06-27 18:39:08,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 506 transitions, 7989 flow [2024-06-27 18:39:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:39:08,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-27 18:39:08,973 INFO L175 Difference]: Start difference. First operand has 289 places, 468 transitions, 6590 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:39:08,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 506 transitions, 7989 flow [2024-06-27 18:39:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 506 transitions, 7831 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:10,854 INFO L231 Difference]: Finished difference. Result has 294 places, 468 transitions, 6565 flow [2024-06-27 18:39:10,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6432, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6565, PETRI_PLACES=294, PETRI_TRANSITIONS=468} [2024-06-27 18:39:10,855 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-27 18:39:10,855 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 468 transitions, 6565 flow [2024-06-27 18:39:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:10,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:39:10,855 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:10,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 785102554, now seen corresponding path program 5 times [2024-06-27 18:39:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035577340] [2024-06-27 18:39:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035577340] [2024-06-27 18:39:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035577340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825142001] [2024-06-27 18:39:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:11,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:11,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 468 transitions, 6565 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:11,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:11,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:11,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:14,063 INFO L124 PetriNetUnfolderBase]: 7529/11930 cut-off events. [2024-06-27 18:39:14,063 INFO L125 PetriNetUnfolderBase]: For 799969/800022 co-relation queries the response was YES. [2024-06-27 18:39:14,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96827 conditions, 11930 events. 7529/11930 cut-off events. For 799969/800022 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 78056 event pairs, 2163 based on Foata normal form. 2/11619 useless extension candidates. Maximal degree in co-relation 96687. Up to 10363 conditions per place. [2024-06-27 18:39:14,269 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 402 selfloop transitions, 96 changer transitions 0/512 dead transitions. [2024-06-27 18:39:14,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 512 transitions, 8302 flow [2024-06-27 18:39:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:39:14,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-27 18:39:14,270 INFO L175 Difference]: Start difference. First operand has 294 places, 468 transitions, 6565 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:39:14,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 512 transitions, 8302 flow [2024-06-27 18:39:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 512 transitions, 8172 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:16,331 INFO L231 Difference]: Finished difference. Result has 297 places, 480 transitions, 6960 flow [2024-06-27 18:39:16,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6960, PETRI_PLACES=297, PETRI_TRANSITIONS=480} [2024-06-27 18:39:16,332 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 243 predicate places. [2024-06-27 18:39:16,333 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 480 transitions, 6960 flow [2024-06-27 18:39:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:16,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:16,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:39:16,333 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:16,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 772589206, now seen corresponding path program 6 times [2024-06-27 18:39:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340892564] [2024-06-27 18:39:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:17,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:17,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340892564] [2024-06-27 18:39:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340892564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:17,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128391387] [2024-06-27 18:39:17,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:17,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:17,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:17,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 480 transitions, 6960 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:17,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:17,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:17,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:19,628 INFO L124 PetriNetUnfolderBase]: 7523/11922 cut-off events. [2024-06-27 18:39:19,628 INFO L125 PetriNetUnfolderBase]: For 813405/813458 co-relation queries the response was YES. [2024-06-27 18:39:19,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97193 conditions, 11922 events. 7523/11922 cut-off events. For 813405/813458 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 77993 event pairs, 2163 based on Foata normal form. 2/11611 useless extension candidates. Maximal degree in co-relation 97051. Up to 10358 conditions per place. [2024-06-27 18:39:19,803 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 404 selfloop transitions, 94 changer transitions 0/512 dead transitions. [2024-06-27 18:39:19,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 512 transitions, 8256 flow [2024-06-27 18:39:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:39:19,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:39:19,805 INFO L175 Difference]: Start difference. First operand has 297 places, 480 transitions, 6960 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:39:19,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 512 transitions, 8256 flow [2024-06-27 18:39:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 512 transitions, 7932 flow, removed 113 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:21,935 INFO L231 Difference]: Finished difference. Result has 302 places, 480 transitions, 6832 flow [2024-06-27 18:39:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6636, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6832, PETRI_PLACES=302, PETRI_TRANSITIONS=480} [2024-06-27 18:39:21,936 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-27 18:39:21,936 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 480 transitions, 6832 flow [2024-06-27 18:39:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:21,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:21,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:39:21,936 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 785109312, now seen corresponding path program 4 times [2024-06-27 18:39:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696307499] [2024-06-27 18:39:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:22,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:22,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696307499] [2024-06-27 18:39:22,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696307499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:22,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:22,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661949984] [2024-06-27 18:39:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:22,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:22,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:22,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:22,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 480 transitions, 6832 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:22,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:22,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:25,561 INFO L124 PetriNetUnfolderBase]: 7494/11855 cut-off events. [2024-06-27 18:39:25,561 INFO L125 PetriNetUnfolderBase]: For 818097/818159 co-relation queries the response was YES. [2024-06-27 18:39:25,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96339 conditions, 11855 events. 7494/11855 cut-off events. For 818097/818159 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 77318 event pairs, 2150 based on Foata normal form. 10/11560 useless extension candidates. Maximal degree in co-relation 96196. Up to 10468 conditions per place. [2024-06-27 18:39:25,735 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 447 selfloop transitions, 58 changer transitions 0/519 dead transitions. [2024-06-27 18:39:25,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 519 transitions, 8170 flow [2024-06-27 18:39:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:39:25,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-27 18:39:25,737 INFO L175 Difference]: Start difference. First operand has 302 places, 480 transitions, 6832 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:39:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 519 transitions, 8170 flow [2024-06-27 18:39:28,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 519 transitions, 7929 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:28,035 INFO L231 Difference]: Finished difference. Result has 304 places, 480 transitions, 6727 flow [2024-06-27 18:39:28,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6727, PETRI_PLACES=304, PETRI_TRANSITIONS=480} [2024-06-27 18:39:28,035 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 250 predicate places. [2024-06-27 18:39:28,036 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 480 transitions, 6727 flow [2024-06-27 18:39:28,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:28,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:28,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:28,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:39:28,037 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:28,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:28,037 INFO L85 PathProgramCache]: Analyzing trace with hash -172219706, now seen corresponding path program 1 times [2024-06-27 18:39:28,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:28,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744431759] [2024-06-27 18:39:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:28,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744431759] [2024-06-27 18:39:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744431759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:29,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:29,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:29,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950986878] [2024-06-27 18:39:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:29,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:29,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:39:29,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 480 transitions, 6727 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:29,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:29,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:39:29,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:31,636 INFO L124 PetriNetUnfolderBase]: 7884/12296 cut-off events. [2024-06-27 18:39:31,636 INFO L125 PetriNetUnfolderBase]: For 834880/834882 co-relation queries the response was YES. [2024-06-27 18:39:31,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99014 conditions, 12296 events. 7884/12296 cut-off events. For 834880/834882 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 78698 event pairs, 2326 based on Foata normal form. 1/12006 useless extension candidates. Maximal degree in co-relation 98870. Up to 11179 conditions per place. [2024-06-27 18:39:31,837 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 486 selfloop transitions, 28 changer transitions 0/522 dead transitions. [2024-06-27 18:39:31,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 522 transitions, 8118 flow [2024-06-27 18:39:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 18:39:31,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-06-27 18:39:31,839 INFO L175 Difference]: Start difference. First operand has 304 places, 480 transitions, 6727 flow. Second operand 9 states and 190 transitions. [2024-06-27 18:39:31,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 522 transitions, 8118 flow [2024-06-27 18:39:33,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 522 transitions, 7946 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:33,977 INFO L231 Difference]: Finished difference. Result has 305 places, 484 transitions, 6746 flow [2024-06-27 18:39:33,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6555, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6746, PETRI_PLACES=305, PETRI_TRANSITIONS=484} [2024-06-27 18:39:33,977 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 251 predicate places. [2024-06-27 18:39:33,977 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 484 transitions, 6746 flow [2024-06-27 18:39:33,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:33,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:33,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:39:33,978 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:33,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash 125674144, now seen corresponding path program 1 times [2024-06-27 18:39:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201174104] [2024-06-27 18:39:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:33,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:34,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201174104] [2024-06-27 18:39:34,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201174104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:34,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:34,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:34,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033928952] [2024-06-27 18:39:34,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:34,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:34,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 484 transitions, 6746 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:34,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:34,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:37,534 INFO L124 PetriNetUnfolderBase]: 7655/12072 cut-off events. [2024-06-27 18:39:37,534 INFO L125 PetriNetUnfolderBase]: For 871234/871335 co-relation queries the response was YES. [2024-06-27 18:39:37,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99515 conditions, 12072 events. 7655/12072 cut-off events. For 871234/871335 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 78538 event pairs, 1744 based on Foata normal form. 62/11827 useless extension candidates. Maximal degree in co-relation 99370. Up to 10369 conditions per place. [2024-06-27 18:39:37,714 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 452 selfloop transitions, 44 changer transitions 0/535 dead transitions. [2024-06-27 18:39:37,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 535 transitions, 8075 flow [2024-06-27 18:39:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:39:37,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:39:37,715 INFO L175 Difference]: Start difference. First operand has 305 places, 484 transitions, 6746 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:39:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 535 transitions, 8075 flow [2024-06-27 18:39:40,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 535 transitions, 7828 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-27 18:39:40,110 INFO L231 Difference]: Finished difference. Result has 304 places, 491 transitions, 6766 flow [2024-06-27 18:39:40,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6499, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6766, PETRI_PLACES=304, PETRI_TRANSITIONS=491} [2024-06-27 18:39:40,110 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 250 predicate places. [2024-06-27 18:39:40,110 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 491 transitions, 6766 flow [2024-06-27 18:39:40,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:40,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:40,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:40,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:39:40,111 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:40,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash 358750834, now seen corresponding path program 2 times [2024-06-27 18:39:40,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:40,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971260564] [2024-06-27 18:39:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:40,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971260564] [2024-06-27 18:39:41,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971260564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:41,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421286520] [2024-06-27 18:39:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:41,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:41,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:41,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:41,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 491 transitions, 6766 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:41,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:41,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:44,689 INFO L124 PetriNetUnfolderBase]: 7715/12184 cut-off events. [2024-06-27 18:39:44,689 INFO L125 PetriNetUnfolderBase]: For 903360/903459 co-relation queries the response was YES. [2024-06-27 18:39:44,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101751 conditions, 12184 events. 7715/12184 cut-off events. For 903360/903459 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 79598 event pairs, 2144 based on Foata normal form. 62/11939 useless extension candidates. Maximal degree in co-relation 101605. Up to 10508 conditions per place. [2024-06-27 18:39:44,999 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 454 selfloop transitions, 44 changer transitions 0/537 dead transitions. [2024-06-27 18:39:44,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 537 transitions, 8102 flow [2024-06-27 18:39:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:39:45,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 18:39:45,000 INFO L175 Difference]: Start difference. First operand has 304 places, 491 transitions, 6766 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:39:45,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 537 transitions, 8102 flow [2024-06-27 18:39:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 537 transitions, 7916 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:47,252 INFO L231 Difference]: Finished difference. Result has 307 places, 494 transitions, 6796 flow [2024-06-27 18:39:47,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6580, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6796, PETRI_PLACES=307, PETRI_TRANSITIONS=494} [2024-06-27 18:39:47,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-27 18:39:47,252 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 494 transitions, 6796 flow [2024-06-27 18:39:47,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:47,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:47,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:39:47,253 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:47,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 644179738, now seen corresponding path program 1 times [2024-06-27 18:39:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553794562] [2024-06-27 18:39:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:48,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:48,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553794562] [2024-06-27 18:39:48,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553794562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:48,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419798195] [2024-06-27 18:39:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:48,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:39:48,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 494 transitions, 6796 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:48,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:48,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:39:48,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:51,564 INFO L124 PetriNetUnfolderBase]: 8056/12556 cut-off events. [2024-06-27 18:39:51,564 INFO L125 PetriNetUnfolderBase]: For 915413/915437 co-relation queries the response was YES. [2024-06-27 18:39:51,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104193 conditions, 12556 events. 8056/12556 cut-off events. For 915413/915437 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 80623 event pairs, 2288 based on Foata normal form. 22/12279 useless extension candidates. Maximal degree in co-relation 104046. Up to 11209 conditions per place. [2024-06-27 18:39:51,763 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 489 selfloop transitions, 49 changer transitions 0/546 dead transitions. [2024-06-27 18:39:51,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 546 transitions, 8268 flow [2024-06-27 18:39:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-27 18:39:51,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2024-06-27 18:39:51,764 INFO L175 Difference]: Start difference. First operand has 307 places, 494 transitions, 6796 flow. Second operand 9 states and 205 transitions. [2024-06-27 18:39:51,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 546 transitions, 8268 flow [2024-06-27 18:39:54,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 546 transitions, 8082 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:54,506 INFO L231 Difference]: Finished difference. Result has 310 places, 498 transitions, 6839 flow [2024-06-27 18:39:54,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6610, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6839, PETRI_PLACES=310, PETRI_TRANSITIONS=498} [2024-06-27 18:39:54,507 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-27 18:39:54,507 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 498 transitions, 6839 flow [2024-06-27 18:39:54,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:54,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:54,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:54,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:39:54,508 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:54,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 476840746, now seen corresponding path program 1 times [2024-06-27 18:39:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142833990] [2024-06-27 18:39:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142833990] [2024-06-27 18:39:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142833990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349104035] [2024-06-27 18:39:55,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:55,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:39:55,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 498 transitions, 6839 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:55,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:55,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:39:55,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:58,496 INFO L124 PetriNetUnfolderBase]: 7833/12325 cut-off events. [2024-06-27 18:39:58,496 INFO L125 PetriNetUnfolderBase]: For 951179/951287 co-relation queries the response was YES. [2024-06-27 18:39:58,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104132 conditions, 12325 events. 7833/12325 cut-off events. For 951179/951287 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 80299 event pairs, 2009 based on Foata normal form. 68/12081 useless extension candidates. Maximal degree in co-relation 103984. Up to 10103 conditions per place. [2024-06-27 18:39:58,701 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 381 selfloop transitions, 140 changer transitions 0/560 dead transitions. [2024-06-27 18:39:58,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 560 transitions, 8370 flow [2024-06-27 18:39:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:39:58,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:39:58,702 INFO L175 Difference]: Start difference. First operand has 310 places, 498 transitions, 6839 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:39:58,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 560 transitions, 8370 flow [2024-06-27 18:40:00,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 560 transitions, 8173 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:00,890 INFO L231 Difference]: Finished difference. Result has 312 places, 516 transitions, 7252 flow [2024-06-27 18:40:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6642, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7252, PETRI_PLACES=312, PETRI_TRANSITIONS=516} [2024-06-27 18:40:00,891 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-27 18:40:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 516 transitions, 7252 flow [2024-06-27 18:40:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:40:00,891 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:00,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 476961646, now seen corresponding path program 2 times [2024-06-27 18:40:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134657076] [2024-06-27 18:40:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:01,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134657076] [2024-06-27 18:40:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134657076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:01,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476000026] [2024-06-27 18:40:01,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:01,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:40:01,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 516 transitions, 7252 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:01,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:40:01,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:04,885 INFO L124 PetriNetUnfolderBase]: 7951/12444 cut-off events. [2024-06-27 18:40:04,885 INFO L125 PetriNetUnfolderBase]: For 1000187/1000297 co-relation queries the response was YES. [2024-06-27 18:40:05,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109097 conditions, 12444 events. 7951/12444 cut-off events. For 1000187/1000297 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 80400 event pairs, 2002 based on Foata normal form. 68/12201 useless extension candidates. Maximal degree in co-relation 108947. Up to 10133 conditions per place. [2024-06-27 18:40:05,099 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 385 selfloop transitions, 149 changer transitions 0/573 dead transitions. [2024-06-27 18:40:05,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 573 transitions, 9066 flow [2024-06-27 18:40:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:40:05,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:40:05,101 INFO L175 Difference]: Start difference. First operand has 312 places, 516 transitions, 7252 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:40:05,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 573 transitions, 9066 flow [2024-06-27 18:40:07,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 573 transitions, 8724 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:07,427 INFO L231 Difference]: Finished difference. Result has 317 places, 531 transitions, 7628 flow [2024-06-27 18:40:07,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7628, PETRI_PLACES=317, PETRI_TRANSITIONS=531} [2024-06-27 18:40:07,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-27 18:40:07,428 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 531 transitions, 7628 flow [2024-06-27 18:40:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:07,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:07,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:40:07,429 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:07,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash 476961863, now seen corresponding path program 1 times [2024-06-27 18:40:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:07,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373228814] [2024-06-27 18:40:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373228814] [2024-06-27 18:40:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373228814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:08,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:08,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293560132] [2024-06-27 18:40:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:08,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:08,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:40:08,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 531 transitions, 7628 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:40:08,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:08,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:40:08,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,542 INFO L124 PetriNetUnfolderBase]: 8282/12853 cut-off events. [2024-06-27 18:40:11,542 INFO L125 PetriNetUnfolderBase]: For 1023587/1023601 co-relation queries the response was YES. [2024-06-27 18:40:11,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112948 conditions, 12853 events. 8282/12853 cut-off events. For 1023587/1023601 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 82298 event pairs, 2128 based on Foata normal form. 10/12566 useless extension candidates. Maximal degree in co-relation 112796. Up to 11529 conditions per place. [2024-06-27 18:40:11,762 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 517 selfloop transitions, 49 changer transitions 0/574 dead transitions. [2024-06-27 18:40:11,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 574 transitions, 9059 flow [2024-06-27 18:40:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:40:11,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-27 18:40:11,763 INFO L175 Difference]: Start difference. First operand has 317 places, 531 transitions, 7628 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:40:11,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 574 transitions, 9059 flow [2024-06-27 18:40:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 574 transitions, 8599 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:14,314 INFO L231 Difference]: Finished difference. Result has 320 places, 535 transitions, 7370 flow [2024-06-27 18:40:14,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7180, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7370, PETRI_PLACES=320, PETRI_TRANSITIONS=535} [2024-06-27 18:40:14,315 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-27 18:40:14,315 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 535 transitions, 7370 flow [2024-06-27 18:40:14,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:40:14,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:14,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:14,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:40:14,316 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:14,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 655282853, now seen corresponding path program 2 times [2024-06-27 18:40:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54926356] [2024-06-27 18:40:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54926356] [2024-06-27 18:40:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54926356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:15,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402596960] [2024-06-27 18:40:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:15,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:40:15,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 535 transitions, 7370 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:40:15,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:15,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:40:15,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:18,227 INFO L124 PetriNetUnfolderBase]: 8322/12871 cut-off events. [2024-06-27 18:40:18,227 INFO L125 PetriNetUnfolderBase]: For 1026596/1026610 co-relation queries the response was YES. [2024-06-27 18:40:18,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112134 conditions, 12871 events. 8322/12871 cut-off events. For 1026596/1026610 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 81978 event pairs, 2105 based on Foata normal form. 10/12594 useless extension candidates. Maximal degree in co-relation 111981. Up to 11273 conditions per place. [2024-06-27 18:40:18,722 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 497 selfloop transitions, 73 changer transitions 0/578 dead transitions. [2024-06-27 18:40:18,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 578 transitions, 9043 flow [2024-06-27 18:40:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:40:18,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-27 18:40:18,724 INFO L175 Difference]: Start difference. First operand has 320 places, 535 transitions, 7370 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:40:18,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 578 transitions, 9043 flow [2024-06-27 18:40:21,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 578 transitions, 8911 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:21,444 INFO L231 Difference]: Finished difference. Result has 322 places, 539 transitions, 7480 flow [2024-06-27 18:40:21,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7238, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7480, PETRI_PLACES=322, PETRI_TRANSITIONS=539} [2024-06-27 18:40:21,445 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 268 predicate places. [2024-06-27 18:40:21,445 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 539 transitions, 7480 flow [2024-06-27 18:40:21,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:40:21,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:21,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:21,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:40:21,445 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:21,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 655015726, now seen corresponding path program 3 times [2024-06-27 18:40:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96268242] [2024-06-27 18:40:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96268242] [2024-06-27 18:40:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96268242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:22,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:22,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:22,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850260238] [2024-06-27 18:40:22,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:22,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:22,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:22,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:40:22,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 539 transitions, 7480 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:22,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:22,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:40:22,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:25,639 INFO L124 PetriNetUnfolderBase]: 8164/12770 cut-off events. [2024-06-27 18:40:25,639 INFO L125 PetriNetUnfolderBase]: For 1082595/1082676 co-relation queries the response was YES. [2024-06-27 18:40:25,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113517 conditions, 12770 events. 8164/12770 cut-off events. For 1082595/1082676 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 82705 event pairs, 2018 based on Foata normal form. 75/12529 useless extension candidates. Maximal degree in co-relation 113363. Up to 10059 conditions per place. [2024-06-27 18:40:25,824 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 414 selfloop transitions, 155 changer transitions 0/610 dead transitions. [2024-06-27 18:40:25,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 610 transitions, 9744 flow [2024-06-27 18:40:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:40:25,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 18:40:25,826 INFO L175 Difference]: Start difference. First operand has 322 places, 539 transitions, 7480 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:40:25,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 610 transitions, 9744 flow [2024-06-27 18:40:28,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 610 transitions, 9569 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:28,344 INFO L231 Difference]: Finished difference. Result has 327 places, 567 transitions, 8373 flow [2024-06-27 18:40:28,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7324, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8373, PETRI_PLACES=327, PETRI_TRANSITIONS=567} [2024-06-27 18:40:28,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-06-27 18:40:28,345 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 567 transitions, 8373 flow [2024-06-27 18:40:28,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:28,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:28,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:40:28,346 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:28,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash 481632323, now seen corresponding path program 3 times [2024-06-27 18:40:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:28,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008310530] [2024-06-27 18:40:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:29,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:29,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008310530] [2024-06-27 18:40:29,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008310530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:29,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:29,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:29,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773703684] [2024-06-27 18:40:29,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:29,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:29,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:40:29,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 567 transitions, 8373 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-27 18:40:29,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:29,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:40:29,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand