./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.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 [2024-06-28 00:52:18,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:52:18,992 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:52:18,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:52:18,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:52:19,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:52:19,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:52:19,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:52:19,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:52:19,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:52:19,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:52:19,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:52:19,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:52:19,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:52:19,028 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:52:19,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:52:19,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:52:19,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:52:19,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:52:19,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:52:19,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:52:19,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:52:19,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:52:19,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:52:19,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:52:19,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:52:19,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:52:19,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:52:19,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:52:19,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:52:19,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:52:19,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:52:19,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:19,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:52:19,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:52:19,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:52:19,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:52:19,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:52:19,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:52:19,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:52:19,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:52:19,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:52:19,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:52:19,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:52:19,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:52:19,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:52:19,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:52:19,219 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:52:19,219 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:52:19,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi003_tso.yml/witness.yml [2024-06-28 00:52:19,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:52:19,359 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:52:19,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-28 00:52:20,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:52:20,641 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:52:20,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-28 00:52:20,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce7bab2f/12c87acd787c4d33a8a6367ef8693876/FLAG19c689f49 [2024-06-28 00:52:20,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce7bab2f/12c87acd787c4d33a8a6367ef8693876 [2024-06-28 00:52:20,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:52:20,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:52:20,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:20,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:52:20,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:52:20,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/2) ... [2024-06-28 00:52:20,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92e6c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/2) ... [2024-06-28 00:52:20,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63a9b68c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92e6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,696 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:52:20,756 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:52:20,757 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:52:20,758 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:52:20,758 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:52:20,758 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-28 00:52:20,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:52:20,979 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/rfi003_tso.i[944,957] [2024-06-28 00:52:21,170 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:21,177 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 00:52:21,204 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/rfi003_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:52:21,271 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:21,299 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:52:21,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21 WrapperNode [2024-06-28 00:52:21,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:21,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:21,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:52:21,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:52:21,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,345 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2024-06-28 00:52:21,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:21,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:52:21,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:52:21,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:52:21,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,378 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:52:21,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:52:21,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:52:21,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:52:21,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:52:21,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:52:21,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:52:21,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:52:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:52:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:52:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:52:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:52:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:52:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:52:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:52:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:52:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:52:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:52:21,533 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:52:21,650 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:52:21,652 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:52:22,009 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:52:22,010 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:52:22,214 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:52:22,214 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:52:22,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:22 BoogieIcfgContainer [2024-06-28 00:52:22,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:52:22,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:52:22,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:52:22,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:52:22,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/4) ... [2024-06-28 00:52:22,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8bf38 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:52:20" (2/4) ... [2024-06-28 00:52:22,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8bf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (3/4) ... [2024-06-28 00:52:22,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8bf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:22" (4/4) ... [2024-06-28 00:52:22,222 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-28 00:52:22,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:52:22,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 00:52:22,235 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:52:22,271 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:52:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 00:52:22,313 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-28 00:52:22,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:22,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-28 00:52:22,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 00:52:22,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-28 00:52:22,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:52:22,329 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;@220a575b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:52:22,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 00:52:22,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:52:22,332 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:52:22,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:22,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:22,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:52:22,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:22,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 393106488, now seen corresponding path program 1 times [2024-06-28 00:52:22,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:22,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082451537] [2024-06-28 00:52:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082451537] [2024-06-28 00:52:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082451537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:23,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692465318] [2024-06-28 00:52:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:23,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 00:52:23,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:23,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 00:52:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:23,740 INFO L124 PetriNetUnfolderBase]: 708/1181 cut-off events. [2024-06-28 00:52:23,740 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:52:23,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 1181 events. 708/1181 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5902 event pairs, 311 based on Foata normal form. 55/1179 useless extension candidates. Maximal degree in co-relation 2351. Up to 1153 conditions per place. [2024-06-28 00:52:23,750 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 34 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-28 00:52:23,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 175 flow [2024-06-28 00:52:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-28 00:52:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-06-28 00:52:23,761 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 74 transitions. [2024-06-28 00:52:23,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 175 flow [2024-06-28 00:52:23,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:23,767 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 95 flow [2024-06-28 00:52:23,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-28 00:52:23,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-28 00:52:23,771 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 95 flow [2024-06-28 00:52:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:23,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:52:23,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:23,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -181686223, now seen corresponding path program 1 times [2024-06-28 00:52:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:23,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002268876] [2024-06-28 00:52:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002268876] [2024-06-28 00:52:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002268876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:24,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:52:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350439071] [2024-06-28 00:52:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:52:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:52:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:52:24,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 00:52:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2024-06-28 00:52:24,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:24,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 00:52:24,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:24,543 INFO L124 PetriNetUnfolderBase]: 699/1304 cut-off events. [2024-06-28 00:52:24,543 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-06-28 00:52:24,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 1304 events. 699/1304 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7142 event pairs, 383 based on Foata normal form. 6/1213 useless extension candidates. Maximal degree in co-relation 2646. Up to 1102 conditions per place. [2024-06-28 00:52:24,549 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 41 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 00:52:24,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 243 flow [2024-06-28 00:52:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 00:52:24,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-28 00:52:24,551 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 95 flow. Second operand 4 states and 92 transitions. [2024-06-28 00:52:24,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 243 flow [2024-06-28 00:52:24,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:24,553 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 146 flow [2024-06-28 00:52:24,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-06-28 00:52:24,554 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-28 00:52:24,554 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 146 flow [2024-06-28 00:52:24,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2024-06-28 00:52:24,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:24,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:24,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:52:24,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:24,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1409715982, now seen corresponding path program 1 times [2024-06-28 00:52:24,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:24,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909492133] [2024-06-28 00:52:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:24,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909492133] [2024-06-28 00:52:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909492133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:24,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985149257] [2024-06-28 00:52:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:24,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:24,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-28 00:52:24,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:24,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-28 00:52:24,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:24,705 INFO L124 PetriNetUnfolderBase]: 312/661 cut-off events. [2024-06-28 00:52:24,706 INFO L125 PetriNetUnfolderBase]: For 46/49 co-relation queries the response was YES. [2024-06-28 00:52:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 661 events. 312/661 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3756 event pairs, 45 based on Foata normal form. 3/635 useless extension candidates. Maximal degree in co-relation 1309. Up to 440 conditions per place. [2024-06-28 00:52:24,709 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 28 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-06-28 00:52:24,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 224 flow [2024-06-28 00:52:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 00:52:24,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-28 00:52:24,710 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 146 flow. Second operand 3 states and 80 transitions. [2024-06-28 00:52:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 224 flow [2024-06-28 00:52:24,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 222 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:24,712 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 146 flow [2024-06-28 00:52:24,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-06-28 00:52:24,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-28 00:52:24,713 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 146 flow [2024-06-28 00:52:24,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:24,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:24,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:52:24,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:24,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash 751521904, now seen corresponding path program 1 times [2024-06-28 00:52:24,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:24,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494433122] [2024-06-28 00:52:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:25,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494433122] [2024-06-28 00:52:25,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494433122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:25,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030207561] [2024-06-28 00:52:25,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:25,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:25,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:25,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:25,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:25,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:25,736 INFO L124 PetriNetUnfolderBase]: 825/1519 cut-off events. [2024-06-28 00:52:25,736 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-06-28 00:52:25,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 1519 events. 825/1519 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8119 event pairs, 478 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 3397. Up to 1321 conditions per place. [2024-06-28 00:52:25,741 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 43 selfloop transitions, 8 changer transitions 3/60 dead transitions. [2024-06-28 00:52:25,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 298 flow [2024-06-28 00:52:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 00:52:25,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 00:52:25,743 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 146 flow. Second operand 5 states and 90 transitions. [2024-06-28 00:52:25,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 298 flow [2024-06-28 00:52:25,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:25,746 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 172 flow [2024-06-28 00:52:25,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-28 00:52:25,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 00:52:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 172 flow [2024-06-28 00:52:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:25,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:52:25,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 460733295, now seen corresponding path program 1 times [2024-06-28 00:52:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715250777] [2024-06-28 00:52:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:26,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715250777] [2024-06-28 00:52:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715250777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716196672] [2024-06-28 00:52:26,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:26,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:27,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 00:52:27,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:27,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 00:52:27,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:27,365 INFO L124 PetriNetUnfolderBase]: 627/1185 cut-off events. [2024-06-28 00:52:27,365 INFO L125 PetriNetUnfolderBase]: For 673/673 co-relation queries the response was YES. [2024-06-28 00:52:27,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1185 events. 627/1185 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6349 event pairs, 127 based on Foata normal form. 4/1139 useless extension candidates. Maximal degree in co-relation 2781. Up to 948 conditions per place. [2024-06-28 00:52:27,371 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 51 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 00:52:27,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 368 flow [2024-06-28 00:52:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 00:52:27,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-06-28 00:52:27,373 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 172 flow. Second operand 6 states and 121 transitions. [2024-06-28 00:52:27,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 368 flow [2024-06-28 00:52:27,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 354 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:27,376 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 213 flow [2024-06-28 00:52:27,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 00:52:27,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-28 00:52:27,377 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 213 flow [2024-06-28 00:52:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:27,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:52:27,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1795560322, now seen corresponding path program 1 times [2024-06-28 00:52:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427414208] [2024-06-28 00:52:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427414208] [2024-06-28 00:52:27,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427414208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:27,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:27,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375061360] [2024-06-28 00:52:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:27,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:27,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:27,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:27,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:27,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:28,176 INFO L124 PetriNetUnfolderBase]: 727/1342 cut-off events. [2024-06-28 00:52:28,177 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2024-06-28 00:52:28,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 1342 events. 727/1342 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7006 event pairs, 347 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 3384. Up to 1167 conditions per place. [2024-06-28 00:52:28,184 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 54 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 00:52:28,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 419 flow [2024-06-28 00:52:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 00:52:28,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-28 00:52:28,185 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 213 flow. Second operand 6 states and 98 transitions. [2024-06-28 00:52:28,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 419 flow [2024-06-28 00:52:28,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 390 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:28,188 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 275 flow [2024-06-28 00:52:28,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-28 00:52:28,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 00:52:28,189 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 275 flow [2024-06-28 00:52:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:28,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:28,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:52:28,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash -172451057, now seen corresponding path program 1 times [2024-06-28 00:52:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637625229] [2024-06-28 00:52:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637625229] [2024-06-28 00:52:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637625229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:28,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:28,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604635334] [2024-06-28 00:52:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:28,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:28,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:28,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:28,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:29,084 INFO L124 PetriNetUnfolderBase]: 747/1394 cut-off events. [2024-06-28 00:52:29,084 INFO L125 PetriNetUnfolderBase]: For 1625/1625 co-relation queries the response was YES. [2024-06-28 00:52:29,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 1394 events. 747/1394 cut-off events. For 1625/1625 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7407 event pairs, 244 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 3744. Up to 1130 conditions per place. [2024-06-28 00:52:29,091 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 59 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-28 00:52:29,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 539 flow [2024-06-28 00:52:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 00:52:29,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-06-28 00:52:29,093 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 275 flow. Second operand 6 states and 107 transitions. [2024-06-28 00:52:29,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 539 flow [2024-06-28 00:52:29,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 526 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:29,097 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 371 flow [2024-06-28 00:52:29,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-06-28 00:52:29,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-28 00:52:29,098 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 371 flow [2024-06-28 00:52:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:29,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:29,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:29,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:52:29,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:29,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash 658061263, now seen corresponding path program 2 times [2024-06-28 00:52:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:29,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10887231] [2024-06-28 00:52:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:29,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:29,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10887231] [2024-06-28 00:52:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10887231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826501899] [2024-06-28 00:52:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:29,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:29,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:29,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:29,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:29,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:29,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:29,865 INFO L124 PetriNetUnfolderBase]: 743/1391 cut-off events. [2024-06-28 00:52:29,865 INFO L125 PetriNetUnfolderBase]: For 2201/2204 co-relation queries the response was YES. [2024-06-28 00:52:29,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 1391 events. 743/1391 cut-off events. For 2201/2204 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7409 event pairs, 252 based on Foata normal form. 4/1336 useless extension candidates. Maximal degree in co-relation 3976. Up to 1127 conditions per place. [2024-06-28 00:52:29,872 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 57 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-28 00:52:29,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 573 flow [2024-06-28 00:52:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 00:52:29,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-28 00:52:29,873 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 371 flow. Second operand 6 states and 104 transitions. [2024-06-28 00:52:29,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 573 flow [2024-06-28 00:52:29,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 555 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:29,878 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 398 flow [2024-06-28 00:52:29,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 00:52:29,878 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 00:52:29,878 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 398 flow [2024-06-28 00:52:29,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:29,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:29,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:29,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:52:29,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:29,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -172203987, now seen corresponding path program 1 times [2024-06-28 00:52:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:29,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711552776] [2024-06-28 00:52:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711552776] [2024-06-28 00:52:30,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711552776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:30,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165913323] [2024-06-28 00:52:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:30,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:30,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:30,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:30,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:30,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:30,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:30,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:30,798 INFO L124 PetriNetUnfolderBase]: 746/1395 cut-off events. [2024-06-28 00:52:30,798 INFO L125 PetriNetUnfolderBase]: For 2494/2494 co-relation queries the response was YES. [2024-06-28 00:52:30,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4067 conditions, 1395 events. 746/1395 cut-off events. For 2494/2494 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7419 event pairs, 335 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 4036. Up to 1184 conditions per place. [2024-06-28 00:52:30,805 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 68 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-28 00:52:30,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 634 flow [2024-06-28 00:52:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 00:52:30,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:52:30,807 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 398 flow. Second operand 7 states and 114 transitions. [2024-06-28 00:52:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 634 flow [2024-06-28 00:52:30,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 598 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:30,812 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 418 flow [2024-06-28 00:52:30,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-06-28 00:52:30,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-28 00:52:30,813 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 418 flow [2024-06-28 00:52:30,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:30,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:30,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:30,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:52:30,813 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:30,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1250316413, now seen corresponding path program 1 times [2024-06-28 00:52:30,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:30,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944312538] [2024-06-28 00:52:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:30,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944312538] [2024-06-28 00:52:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944312538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:31,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080828619] [2024-06-28 00:52:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:31,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:31,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:31,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 418 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:31,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:31,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:31,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:31,630 INFO L124 PetriNetUnfolderBase]: 772/1438 cut-off events. [2024-06-28 00:52:31,630 INFO L125 PetriNetUnfolderBase]: For 3201/3204 co-relation queries the response was YES. [2024-06-28 00:52:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 1438 events. 772/1438 cut-off events. For 3201/3204 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7666 event pairs, 254 based on Foata normal form. 4/1383 useless extension candidates. Maximal degree in co-relation 4313. Up to 1149 conditions per place. [2024-06-28 00:52:31,637 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 65 selfloop transitions, 31 changer transitions 0/102 dead transitions. [2024-06-28 00:52:31,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 738 flow [2024-06-28 00:52:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:52:31,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-06-28 00:52:31,639 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 418 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:52:31,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 738 flow [2024-06-28 00:52:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 704 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:31,643 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 555 flow [2024-06-28 00:52:31,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=555, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 00:52:31,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-28 00:52:31,645 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 555 flow [2024-06-28 00:52:31,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:31,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:31,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:31,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:52:31,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:31,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -782464669, now seen corresponding path program 2 times [2024-06-28 00:52:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:31,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42188286] [2024-06-28 00:52:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42188286] [2024-06-28 00:52:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42188286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:32,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:32,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009392872] [2024-06-28 00:52:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:32,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:32,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:32,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:32,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:32,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 555 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:32,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:32,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:32,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:32,559 INFO L124 PetriNetUnfolderBase]: 792/1465 cut-off events. [2024-06-28 00:52:32,559 INFO L125 PetriNetUnfolderBase]: For 4463/4466 co-relation queries the response was YES. [2024-06-28 00:52:32,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4994 conditions, 1465 events. 792/1465 cut-off events. For 4463/4466 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7801 event pairs, 232 based on Foata normal form. 4/1410 useless extension candidates. Maximal degree in co-relation 4959. Up to 1118 conditions per place. [2024-06-28 00:52:32,568 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 74 selfloop transitions, 35 changer transitions 0/115 dead transitions. [2024-06-28 00:52:32,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 971 flow [2024-06-28 00:52:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:52:32,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-06-28 00:52:32,570 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 555 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:52:32,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 971 flow [2024-06-28 00:52:32,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 925 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:32,576 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 685 flow [2024-06-28 00:52:32,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-28 00:52:32,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-28 00:52:32,576 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 685 flow [2024-06-28 00:52:32,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:32,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:32,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:52:32,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:32,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1906105379, now seen corresponding path program 3 times [2024-06-28 00:52:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:32,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813708396] [2024-06-28 00:52:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813708396] [2024-06-28 00:52:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813708396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517246310] [2024-06-28 00:52:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:33,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:33,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:33,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:33,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:33,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:33,496 INFO L124 PetriNetUnfolderBase]: 802/1480 cut-off events. [2024-06-28 00:52:33,496 INFO L125 PetriNetUnfolderBase]: For 5702/5705 co-relation queries the response was YES. [2024-06-28 00:52:33,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1480 events. 802/1480 cut-off events. For 5702/5705 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7832 event pairs, 250 based on Foata normal form. 4/1425 useless extension candidates. Maximal degree in co-relation 5360. Up to 1194 conditions per place. [2024-06-28 00:52:33,504 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 79 selfloop transitions, 30 changer transitions 0/115 dead transitions. [2024-06-28 00:52:33,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 115 transitions, 1026 flow [2024-06-28 00:52:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 00:52:33,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 00:52:33,506 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 685 flow. Second operand 7 states and 119 transitions. [2024-06-28 00:52:33,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 115 transitions, 1026 flow [2024-06-28 00:52:33,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 115 transitions, 968 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:33,515 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 752 flow [2024-06-28 00:52:33,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2024-06-28 00:52:33,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 00:52:33,517 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 752 flow [2024-06-28 00:52:33,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:33,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:33,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:33,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:52:33,518 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:33,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1905797797, now seen corresponding path program 1 times [2024-06-28 00:52:33,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:33,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679194539] [2024-06-28 00:52:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:33,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:34,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:34,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679194539] [2024-06-28 00:52:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679194539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:34,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:34,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933346655] [2024-06-28 00:52:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:34,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:34,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:34,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:34,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:34,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:34,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:35,204 INFO L124 PetriNetUnfolderBase]: 808/1507 cut-off events. [2024-06-28 00:52:35,204 INFO L125 PetriNetUnfolderBase]: For 6331/6331 co-relation queries the response was YES. [2024-06-28 00:52:35,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 1507 events. 808/1507 cut-off events. For 6331/6331 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8104 event pairs, 424 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 5534. Up to 1261 conditions per place. [2024-06-28 00:52:35,212 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 99 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-28 00:52:35,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 1136 flow [2024-06-28 00:52:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:52:35,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064327485380117 [2024-06-28 00:52:35,213 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 752 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:52:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 1136 flow [2024-06-28 00:52:35,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 1093 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:35,221 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 819 flow [2024-06-28 00:52:35,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=819, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2024-06-28 00:52:35,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 00:52:35,222 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 819 flow [2024-06-28 00:52:35,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:35,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:35,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:35,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:52:35,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:35,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -279973552, now seen corresponding path program 1 times [2024-06-28 00:52:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:35,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788531546] [2024-06-28 00:52:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:35,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788531546] [2024-06-28 00:52:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788531546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488272483] [2024-06-28 00:52:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:35,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:35,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:35,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:35,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:35,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:36,352 INFO L124 PetriNetUnfolderBase]: 894/1635 cut-off events. [2024-06-28 00:52:36,352 INFO L125 PetriNetUnfolderBase]: For 7040/7040 co-relation queries the response was YES. [2024-06-28 00:52:36,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 1635 events. 894/1635 cut-off events. For 7040/7040 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8724 event pairs, 255 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 6251. Up to 1300 conditions per place. [2024-06-28 00:52:36,365 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 111 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-28 00:52:36,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1330 flow [2024-06-28 00:52:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:52:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-06-28 00:52:36,367 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 819 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:52:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1330 flow [2024-06-28 00:52:36,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 1298 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:36,379 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 993 flow [2024-06-28 00:52:36,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=993, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-06-28 00:52:36,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 00:52:36,380 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 993 flow [2024-06-28 00:52:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:36,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:36,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:36,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:52:36,380 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:36,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1140306698, now seen corresponding path program 2 times [2024-06-28 00:52:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:36,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784619126] [2024-06-28 00:52:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:36,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784619126] [2024-06-28 00:52:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784619126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:36,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:36,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:36,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520063694] [2024-06-28 00:52:36,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:36,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:36,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 00:52:36,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:36,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:36,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 00:52:36,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:37,254 INFO L124 PetriNetUnfolderBase]: 880/1627 cut-off events. [2024-06-28 00:52:37,254 INFO L125 PetriNetUnfolderBase]: For 7822/7847 co-relation queries the response was YES. [2024-06-28 00:52:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6572 conditions, 1627 events. 880/1627 cut-off events. For 7822/7847 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8789 event pairs, 209 based on Foata normal form. 14/1571 useless extension candidates. Maximal degree in co-relation 6524. Up to 1173 conditions per place. [2024-06-28 00:52:37,268 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 72 selfloop transitions, 40 changer transitions 0/132 dead transitions. [2024-06-28 00:52:37,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1305 flow [2024-06-28 00:52:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 00:52:37,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-28 00:52:37,270 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 993 flow. Second operand 5 states and 94 transitions. [2024-06-28 00:52:37,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1305 flow [2024-06-28 00:52:37,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1241 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:37,321 INFO L231 Difference]: Finished difference. Result has 101 places, 118 transitions, 1075 flow [2024-06-28 00:52:37,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1075, PETRI_PLACES=101, PETRI_TRANSITIONS=118} [2024-06-28 00:52:37,322 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-28 00:52:37,322 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 118 transitions, 1075 flow [2024-06-28 00:52:37,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:37,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:37,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:37,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:52:37,323 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:37,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1717571225, now seen corresponding path program 1 times [2024-06-28 00:52:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828611105] [2024-06-28 00:52:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828611105] [2024-06-28 00:52:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828611105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:38,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:38,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:38,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655152302] [2024-06-28 00:52:38,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:38,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:38,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:38,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:38,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:38,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 118 transitions, 1075 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:38,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:38,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:38,537 INFO L124 PetriNetUnfolderBase]: 990/1786 cut-off events. [2024-06-28 00:52:38,538 INFO L125 PetriNetUnfolderBase]: For 10361/10361 co-relation queries the response was YES. [2024-06-28 00:52:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7782 conditions, 1786 events. 990/1786 cut-off events. For 10361/10361 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9704 event pairs, 281 based on Foata normal form. 1/1727 useless extension candidates. Maximal degree in co-relation 7734. Up to 1417 conditions per place. [2024-06-28 00:52:38,548 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 119 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2024-06-28 00:52:38,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1803 flow [2024-06-28 00:52:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:52:38,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 00:52:38,550 INFO L175 Difference]: Start difference. First operand has 101 places, 118 transitions, 1075 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:52:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1803 flow [2024-06-28 00:52:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 174 transitions, 1689 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:38,567 INFO L231 Difference]: Finished difference. Result has 105 places, 139 transitions, 1334 flow [2024-06-28 00:52:38,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1334, PETRI_PLACES=105, PETRI_TRANSITIONS=139} [2024-06-28 00:52:38,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-06-28 00:52:38,568 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 1334 flow [2024-06-28 00:52:38,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:38,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:38,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:38,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:52:38,569 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:38,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash 646575544, now seen corresponding path program 3 times [2024-06-28 00:52:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937028764] [2024-06-28 00:52:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:38,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937028764] [2024-06-28 00:52:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937028764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:38,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:38,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415268035] [2024-06-28 00:52:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:38,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:38,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:39,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 00:52:39,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 1334 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:39,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:39,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 00:52:39,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:39,443 INFO L124 PetriNetUnfolderBase]: 953/1741 cut-off events. [2024-06-28 00:52:39,443 INFO L125 PetriNetUnfolderBase]: For 8343/8370 co-relation queries the response was YES. [2024-06-28 00:52:39,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7347 conditions, 1741 events. 953/1741 cut-off events. For 8343/8370 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9538 event pairs, 237 based on Foata normal form. 16/1686 useless extension candidates. Maximal degree in co-relation 7299. Up to 1220 conditions per place. [2024-06-28 00:52:39,454 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 86 selfloop transitions, 55 changer transitions 0/161 dead transitions. [2024-06-28 00:52:39,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 161 transitions, 1730 flow [2024-06-28 00:52:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 00:52:39,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 00:52:39,456 INFO L175 Difference]: Start difference. First operand has 105 places, 139 transitions, 1334 flow. Second operand 6 states and 111 transitions. [2024-06-28 00:52:39,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 161 transitions, 1730 flow [2024-06-28 00:52:39,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 161 transitions, 1668 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:39,470 INFO L231 Difference]: Finished difference. Result has 108 places, 142 transitions, 1428 flow [2024-06-28 00:52:39,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1428, PETRI_PLACES=108, PETRI_TRANSITIONS=142} [2024-06-28 00:52:39,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-06-28 00:52:39,471 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 142 transitions, 1428 flow [2024-06-28 00:52:39,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:39,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:39,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:39,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:52:39,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:39,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash 778785420, now seen corresponding path program 1 times [2024-06-28 00:52:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:39,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255586218] [2024-06-28 00:52:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255586218] [2024-06-28 00:52:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255586218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:40,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537016597] [2024-06-28 00:52:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:40,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:40,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:40,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 142 transitions, 1428 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:40,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:40,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:40,471 INFO L124 PetriNetUnfolderBase]: 1024/1845 cut-off events. [2024-06-28 00:52:40,471 INFO L125 PetriNetUnfolderBase]: For 11166/11169 co-relation queries the response was YES. [2024-06-28 00:52:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 1845 events. 1024/1845 cut-off events. For 11166/11169 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10057 event pairs, 290 based on Foata normal form. 4/1786 useless extension candidates. Maximal degree in co-relation 8092. Up to 1398 conditions per place. [2024-06-28 00:52:40,483 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 129 selfloop transitions, 61 changer transitions 0/196 dead transitions. [2024-06-28 00:52:40,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 196 transitions, 2107 flow [2024-06-28 00:52:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 00:52:40,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-28 00:52:40,484 INFO L175 Difference]: Start difference. First operand has 108 places, 142 transitions, 1428 flow. Second operand 9 states and 157 transitions. [2024-06-28 00:52:40,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 196 transitions, 2107 flow [2024-06-28 00:52:40,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 1968 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:40,504 INFO L231 Difference]: Finished difference. Result has 114 places, 162 transitions, 1621 flow [2024-06-28 00:52:40,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1621, PETRI_PLACES=114, PETRI_TRANSITIONS=162} [2024-06-28 00:52:40,504 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 00:52:40,504 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 162 transitions, 1621 flow [2024-06-28 00:52:40,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:40,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:40,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:40,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:52:40,505 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:40,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -697939789, now seen corresponding path program 2 times [2024-06-28 00:52:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:40,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325296947] [2024-06-28 00:52:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:40,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:41,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:41,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325296947] [2024-06-28 00:52:41,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325296947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:41,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:41,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:41,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828778448] [2024-06-28 00:52:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:41,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:41,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:41,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:41,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 162 transitions, 1621 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:41,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:41,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:41,587 INFO L124 PetriNetUnfolderBase]: 1042/1872 cut-off events. [2024-06-28 00:52:41,588 INFO L125 PetriNetUnfolderBase]: For 12223/12223 co-relation queries the response was YES. [2024-06-28 00:52:41,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8654 conditions, 1872 events. 1042/1872 cut-off events. For 12223/12223 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10130 event pairs, 377 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 8603. Up to 1469 conditions per place. [2024-06-28 00:52:41,600 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 124 selfloop transitions, 78 changer transitions 0/208 dead transitions. [2024-06-28 00:52:41,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 208 transitions, 2442 flow [2024-06-28 00:52:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:52:41,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-06-28 00:52:41,609 INFO L175 Difference]: Start difference. First operand has 114 places, 162 transitions, 1621 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:52:41,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 208 transitions, 2442 flow [2024-06-28 00:52:41,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 208 transitions, 2402 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:41,634 INFO L231 Difference]: Finished difference. Result has 122 places, 187 transitions, 2142 flow [2024-06-28 00:52:41,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2142, PETRI_PLACES=122, PETRI_TRANSITIONS=187} [2024-06-28 00:52:41,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 00:52:41,634 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 187 transitions, 2142 flow [2024-06-28 00:52:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:41,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:41,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:52:41,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:41,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash -105102260, now seen corresponding path program 2 times [2024-06-28 00:52:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783884715] [2024-06-28 00:52:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783884715] [2024-06-28 00:52:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783884715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859937580] [2024-06-28 00:52:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:42,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:42,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 187 transitions, 2142 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:42,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:42,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:42,799 INFO L124 PetriNetUnfolderBase]: 1077/1930 cut-off events. [2024-06-28 00:52:42,799 INFO L125 PetriNetUnfolderBase]: For 15322/15328 co-relation queries the response was YES. [2024-06-28 00:52:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 1930 events. 1077/1930 cut-off events. For 15322/15328 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10570 event pairs, 328 based on Foata normal form. 6/1872 useless extension candidates. Maximal degree in co-relation 9382. Up to 1414 conditions per place. [2024-06-28 00:52:42,811 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 139 selfloop transitions, 81 changer transitions 0/226 dead transitions. [2024-06-28 00:52:42,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 226 transitions, 2808 flow [2024-06-28 00:52:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:52:42,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-28 00:52:42,813 INFO L175 Difference]: Start difference. First operand has 122 places, 187 transitions, 2142 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:52:42,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 226 transitions, 2808 flow [2024-06-28 00:52:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 226 transitions, 2729 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:42,843 INFO L231 Difference]: Finished difference. Result has 130 places, 195 transitions, 2367 flow [2024-06-28 00:52:42,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2367, PETRI_PLACES=130, PETRI_TRANSITIONS=195} [2024-06-28 00:52:42,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 00:52:42,844 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 195 transitions, 2367 flow [2024-06-28 00:52:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:42,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:42,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:42,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:52:42,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:42,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1046231598, now seen corresponding path program 3 times [2024-06-28 00:52:42,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803700946] [2024-06-28 00:52:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:42,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803700946] [2024-06-28 00:52:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803700946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:43,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:43,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806053809] [2024-06-28 00:52:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:43,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:43,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 195 transitions, 2367 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:43,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:43,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:43,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:43,858 INFO L124 PetriNetUnfolderBase]: 1103/1971 cut-off events. [2024-06-28 00:52:43,859 INFO L125 PetriNetUnfolderBase]: For 18122/18122 co-relation queries the response was YES. [2024-06-28 00:52:43,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1971 events. 1103/1971 cut-off events. For 18122/18122 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10763 event pairs, 461 based on Foata normal form. 2/1911 useless extension candidates. Maximal degree in co-relation 10056. Up to 1706 conditions per place. [2024-06-28 00:52:43,871 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 198 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2024-06-28 00:52:43,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 223 transitions, 2974 flow [2024-06-28 00:52:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:52:43,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309210526315789 [2024-06-28 00:52:43,874 INFO L175 Difference]: Start difference. First operand has 130 places, 195 transitions, 2367 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:52:43,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 223 transitions, 2974 flow [2024-06-28 00:52:43,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 223 transitions, 2866 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:43,904 INFO L231 Difference]: Finished difference. Result has 136 places, 198 transitions, 2353 flow [2024-06-28 00:52:43,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2353, PETRI_PLACES=136, PETRI_TRANSITIONS=198} [2024-06-28 00:52:43,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 00:52:43,905 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 198 transitions, 2353 flow [2024-06-28 00:52:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:43,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:43,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:43,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:52:43,906 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:43,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2015383854, now seen corresponding path program 4 times [2024-06-28 00:52:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:43,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616745982] [2024-06-28 00:52:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616745982] [2024-06-28 00:52:44,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616745982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:44,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98428753] [2024-06-28 00:52:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:44,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:44,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:44,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 198 transitions, 2353 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:44,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:44,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:45,110 INFO L124 PetriNetUnfolderBase]: 1145/2041 cut-off events. [2024-06-28 00:52:45,111 INFO L125 PetriNetUnfolderBase]: For 18105/18111 co-relation queries the response was YES. [2024-06-28 00:52:45,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 2041 events. 1145/2041 cut-off events. For 18105/18111 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11295 event pairs, 323 based on Foata normal form. 6/1979 useless extension candidates. Maximal degree in co-relation 10408. Up to 1246 conditions per place. [2024-06-28 00:52:45,126 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 156 selfloop transitions, 83 changer transitions 0/245 dead transitions. [2024-06-28 00:52:45,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 245 transitions, 3220 flow [2024-06-28 00:52:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 00:52:45,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-28 00:52:45,133 INFO L175 Difference]: Start difference. First operand has 136 places, 198 transitions, 2353 flow. Second operand 8 states and 145 transitions. [2024-06-28 00:52:45,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 245 transitions, 3220 flow [2024-06-28 00:52:45,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 245 transitions, 3152 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:45,175 INFO L231 Difference]: Finished difference. Result has 141 places, 209 transitions, 2682 flow [2024-06-28 00:52:45,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2682, PETRI_PLACES=141, PETRI_TRANSITIONS=209} [2024-06-28 00:52:45,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 00:52:45,176 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 209 transitions, 2682 flow [2024-06-28 00:52:45,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:45,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:45,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:45,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:52:45,176 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:45,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1040268555, now seen corresponding path program 3 times [2024-06-28 00:52:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:45,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393315572] [2024-06-28 00:52:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:45,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393315572] [2024-06-28 00:52:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393315572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:45,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:45,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197649773] [2024-06-28 00:52:45,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:45,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:45,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:45,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:45,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:45,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 209 transitions, 2682 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:45,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:45,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:46,370 INFO L124 PetriNetUnfolderBase]: 1147/2053 cut-off events. [2024-06-28 00:52:46,370 INFO L125 PetriNetUnfolderBase]: For 20886/20892 co-relation queries the response was YES. [2024-06-28 00:52:46,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 2053 events. 1147/2053 cut-off events. For 20886/20892 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11460 event pairs, 367 based on Foata normal form. 5/1987 useless extension candidates. Maximal degree in co-relation 11106. Up to 1653 conditions per place. [2024-06-28 00:52:46,385 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 163 selfloop transitions, 64 changer transitions 0/233 dead transitions. [2024-06-28 00:52:46,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 233 transitions, 3296 flow [2024-06-28 00:52:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 00:52:46,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2024-06-28 00:52:46,387 INFO L175 Difference]: Start difference. First operand has 141 places, 209 transitions, 2682 flow. Second operand 7 states and 120 transitions. [2024-06-28 00:52:46,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 233 transitions, 3296 flow [2024-06-28 00:52:46,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 233 transitions, 3222 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:46,432 INFO L231 Difference]: Finished difference. Result has 147 places, 212 transitions, 2804 flow [2024-06-28 00:52:46,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2804, PETRI_PLACES=147, PETRI_TRANSITIONS=212} [2024-06-28 00:52:46,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 00:52:46,433 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 212 transitions, 2804 flow [2024-06-28 00:52:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:46,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:46,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:52:46,434 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:46,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1040276274, now seen corresponding path program 5 times [2024-06-28 00:52:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835511561] [2024-06-28 00:52:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835511561] [2024-06-28 00:52:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835511561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311954527] [2024-06-28 00:52:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:47,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:47,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 212 transitions, 2804 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:47,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:47,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:47,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:47,585 INFO L124 PetriNetUnfolderBase]: 1169/2088 cut-off events. [2024-06-28 00:52:47,586 INFO L125 PetriNetUnfolderBase]: For 21989/21995 co-relation queries the response was YES. [2024-06-28 00:52:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11413 conditions, 2088 events. 1169/2088 cut-off events. For 21989/21995 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11601 event pairs, 365 based on Foata normal form. 6/2023 useless extension candidates. Maximal degree in co-relation 11344. Up to 1612 conditions per place. [2024-06-28 00:52:47,600 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 175 selfloop transitions, 66 changer transitions 0/247 dead transitions. [2024-06-28 00:52:47,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 247 transitions, 3515 flow [2024-06-28 00:52:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:52:47,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 00:52:47,601 INFO L175 Difference]: Start difference. First operand has 147 places, 212 transitions, 2804 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:52:47,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 247 transitions, 3515 flow [2024-06-28 00:52:47,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 247 transitions, 3387 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:47,638 INFO L231 Difference]: Finished difference. Result has 153 places, 218 transitions, 2936 flow [2024-06-28 00:52:47,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2936, PETRI_PLACES=153, PETRI_TRANSITIONS=218} [2024-06-28 00:52:47,638 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-28 00:52:47,638 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 218 transitions, 2936 flow [2024-06-28 00:52:47,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:47,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:47,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:52:47,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:47,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2015722188, now seen corresponding path program 1 times [2024-06-28 00:52:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609604824] [2024-06-28 00:52:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609604824] [2024-06-28 00:52:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609604824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:48,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:48,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760962372] [2024-06-28 00:52:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:48,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:48,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 218 transitions, 2936 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:48,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:48,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:49,499 INFO L124 PetriNetUnfolderBase]: 1172/2104 cut-off events. [2024-06-28 00:52:49,499 INFO L125 PetriNetUnfolderBase]: For 23531/23531 co-relation queries the response was YES. [2024-06-28 00:52:49,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11614 conditions, 2104 events. 1172/2104 cut-off events. For 23531/23531 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11728 event pairs, 482 based on Foata normal form. 1/2035 useless extension candidates. Maximal degree in co-relation 11542. Up to 1809 conditions per place. [2024-06-28 00:52:49,517 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 224 selfloop transitions, 21 changer transitions 0/251 dead transitions. [2024-06-28 00:52:49,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 251 transitions, 3637 flow [2024-06-28 00:52:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:52:49,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-28 00:52:49,519 INFO L175 Difference]: Start difference. First operand has 153 places, 218 transitions, 2936 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:52:49,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 251 transitions, 3637 flow [2024-06-28 00:52:49,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 251 transitions, 3515 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:49,565 INFO L231 Difference]: Finished difference. Result has 159 places, 220 transitions, 2881 flow [2024-06-28 00:52:49,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2881, PETRI_PLACES=159, PETRI_TRANSITIONS=220} [2024-06-28 00:52:49,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-28 00:52:49,566 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 220 transitions, 2881 flow [2024-06-28 00:52:49,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:49,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:49,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:49,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:52:49,567 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:49,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:49,567 INFO L85 PathProgramCache]: Analyzing trace with hash -962985352, now seen corresponding path program 1 times [2024-06-28 00:52:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:49,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837097471] [2024-06-28 00:52:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:49,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837097471] [2024-06-28 00:52:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837097471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449620624] [2024-06-28 00:52:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:50,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:50,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:50,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 220 transitions, 2881 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:50,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:50,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:50,747 INFO L124 PetriNetUnfolderBase]: 1292/2284 cut-off events. [2024-06-28 00:52:50,747 INFO L125 PetriNetUnfolderBase]: For 23443/23443 co-relation queries the response was YES. [2024-06-28 00:52:50,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12412 conditions, 2284 events. 1292/2284 cut-off events. For 23443/23443 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12777 event pairs, 265 based on Foata normal form. 2/2217 useless extension candidates. Maximal degree in co-relation 12338. Up to 1603 conditions per place. [2024-06-28 00:52:50,761 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 170 selfloop transitions, 103 changer transitions 0/279 dead transitions. [2024-06-28 00:52:50,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 279 transitions, 3794 flow [2024-06-28 00:52:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:52:50,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 00:52:50,762 INFO L175 Difference]: Start difference. First operand has 159 places, 220 transitions, 2881 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:52:50,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 279 transitions, 3794 flow [2024-06-28 00:52:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 279 transitions, 3745 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:52:50,801 INFO L231 Difference]: Finished difference. Result has 162 places, 245 transitions, 3345 flow [2024-06-28 00:52:50,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3345, PETRI_PLACES=162, PETRI_TRANSITIONS=245} [2024-06-28 00:52:50,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-28 00:52:50,802 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 245 transitions, 3345 flow [2024-06-28 00:52:50,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:50,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:50,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:50,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:52:50,802 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:50,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:50,803 INFO L85 PathProgramCache]: Analyzing trace with hash 48422100, now seen corresponding path program 2 times [2024-06-28 00:52:50,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:50,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602340639] [2024-06-28 00:52:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:50,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602340639] [2024-06-28 00:52:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602340639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252581765] [2024-06-28 00:52:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:51,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:51,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 245 transitions, 3345 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:51,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:52,176 INFO L124 PetriNetUnfolderBase]: 1348/2364 cut-off events. [2024-06-28 00:52:52,176 INFO L125 PetriNetUnfolderBase]: For 27357/27357 co-relation queries the response was YES. [2024-06-28 00:52:52,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13693 conditions, 2364 events. 1348/2364 cut-off events. For 27357/27357 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13192 event pairs, 312 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 13616. Up to 1942 conditions per place. [2024-06-28 00:52:52,200 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 236 selfloop transitions, 54 changer transitions 0/296 dead transitions. [2024-06-28 00:52:52,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 296 transitions, 4304 flow [2024-06-28 00:52:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 00:52:52,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-06-28 00:52:52,215 INFO L175 Difference]: Start difference. First operand has 162 places, 245 transitions, 3345 flow. Second operand 9 states and 158 transitions. [2024-06-28 00:52:52,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 296 transitions, 4304 flow [2024-06-28 00:52:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 296 transitions, 4143 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:52,307 INFO L231 Difference]: Finished difference. Result has 170 places, 261 transitions, 3550 flow [2024-06-28 00:52:52,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3550, PETRI_PLACES=170, PETRI_TRANSITIONS=261} [2024-06-28 00:52:52,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-28 00:52:52,308 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 261 transitions, 3550 flow [2024-06-28 00:52:52,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:52,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:52,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:52,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:52:52,309 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:52,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 52147928, now seen corresponding path program 1 times [2024-06-28 00:52:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803164161] [2024-06-28 00:52:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803164161] [2024-06-28 00:52:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803164161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796057631] [2024-06-28 00:52:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:53,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:53,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 261 transitions, 3550 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:53,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:53,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:53,892 INFO L124 PetriNetUnfolderBase]: 1390/2455 cut-off events. [2024-06-28 00:52:53,893 INFO L125 PetriNetUnfolderBase]: For 30562/30562 co-relation queries the response was YES. [2024-06-28 00:52:53,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14442 conditions, 2455 events. 1390/2455 cut-off events. For 30562/30562 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13913 event pairs, 438 based on Foata normal form. 1/2382 useless extension candidates. Maximal degree in co-relation 14362. Up to 1896 conditions per place. [2024-06-28 00:52:53,911 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 227 selfloop transitions, 77 changer transitions 0/310 dead transitions. [2024-06-28 00:52:53,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 310 transitions, 4512 flow [2024-06-28 00:52:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 00:52:53,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 00:52:53,912 INFO L175 Difference]: Start difference. First operand has 170 places, 261 transitions, 3550 flow. Second operand 9 states and 162 transitions. [2024-06-28 00:52:53,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 310 transitions, 4512 flow [2024-06-28 00:52:53,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 310 transitions, 4376 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:53,970 INFO L231 Difference]: Finished difference. Result has 176 places, 272 transitions, 3809 flow [2024-06-28 00:52:53,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3809, PETRI_PLACES=176, PETRI_TRANSITIONS=272} [2024-06-28 00:52:53,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 00:52:53,970 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 272 transitions, 3809 flow [2024-06-28 00:52:53,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:53,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:52:53,971 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:53,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1003805664, now seen corresponding path program 1 times [2024-06-28 00:52:53,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:53,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070406681] [2024-06-28 00:52:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:54,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070406681] [2024-06-28 00:52:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070406681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:54,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334101400] [2024-06-28 00:52:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:54,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:54,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:54,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 272 transitions, 3809 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:54,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:54,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:55,577 INFO L124 PetriNetUnfolderBase]: 1422/2511 cut-off events. [2024-06-28 00:52:55,577 INFO L125 PetriNetUnfolderBase]: For 34828/34834 co-relation queries the response was YES. [2024-06-28 00:52:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14934 conditions, 2511 events. 1422/2511 cut-off events. For 34828/34834 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14381 event pairs, 365 based on Foata normal form. 6/2439 useless extension candidates. Maximal degree in co-relation 14851. Up to 1945 conditions per place. [2024-06-28 00:52:55,598 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 223 selfloop transitions, 85 changer transitions 0/314 dead transitions. [2024-06-28 00:52:55,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 314 transitions, 4683 flow [2024-06-28 00:52:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:52:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:52:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 00:52:55,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-28 00:52:55,600 INFO L175 Difference]: Start difference. First operand has 176 places, 272 transitions, 3809 flow. Second operand 10 states and 174 transitions. [2024-06-28 00:52:55,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 314 transitions, 4683 flow [2024-06-28 00:52:55,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 314 transitions, 4604 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:55,684 INFO L231 Difference]: Finished difference. Result has 185 places, 276 transitions, 3976 flow [2024-06-28 00:52:55,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3976, PETRI_PLACES=185, PETRI_TRANSITIONS=276} [2024-06-28 00:52:55,687 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 00:52:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 276 transitions, 3976 flow [2024-06-28 00:52:55,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:55,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:55,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:55,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:52:55,688 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:55,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1112600014, now seen corresponding path program 3 times [2024-06-28 00:52:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:55,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966346832] [2024-06-28 00:52:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:56,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:56,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966346832] [2024-06-28 00:52:56,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966346832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:56,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:56,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791228897] [2024-06-28 00:52:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:56,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:56,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:56,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 276 transitions, 3976 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:56,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:56,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:57,137 INFO L124 PetriNetUnfolderBase]: 1490/2616 cut-off events. [2024-06-28 00:52:57,138 INFO L125 PetriNetUnfolderBase]: For 36171/36171 co-relation queries the response was YES. [2024-06-28 00:52:57,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15848 conditions, 2616 events. 1490/2616 cut-off events. For 36171/36171 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14991 event pairs, 353 based on Foata normal form. 2/2541 useless extension candidates. Maximal degree in co-relation 15762. Up to 2078 conditions per place. [2024-06-28 00:52:57,160 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 249 selfloop transitions, 66 changer transitions 0/321 dead transitions. [2024-06-28 00:52:57,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 321 transitions, 4938 flow [2024-06-28 00:52:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:52:57,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-06-28 00:52:57,161 INFO L175 Difference]: Start difference. First operand has 185 places, 276 transitions, 3976 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:52:57,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 321 transitions, 4938 flow [2024-06-28 00:52:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 321 transitions, 4758 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:57,311 INFO L231 Difference]: Finished difference. Result has 188 places, 292 transitions, 4193 flow [2024-06-28 00:52:57,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4193, PETRI_PLACES=188, PETRI_TRANSITIONS=292} [2024-06-28 00:52:57,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-28 00:52:57,312 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 292 transitions, 4193 flow [2024-06-28 00:52:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:57,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:57,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:52:57,312 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -564162736, now seen corresponding path program 4 times [2024-06-28 00:52:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063798771] [2024-06-28 00:52:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063798771] [2024-06-28 00:52:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063798771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061029527] [2024-06-28 00:52:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:58,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:58,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 292 transitions, 4193 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:58,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:58,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:58,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:58,987 INFO L124 PetriNetUnfolderBase]: 1562/2733 cut-off events. [2024-06-28 00:52:58,987 INFO L125 PetriNetUnfolderBase]: For 40391/40391 co-relation queries the response was YES. [2024-06-28 00:52:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17120 conditions, 2733 events. 1562/2733 cut-off events. For 40391/40391 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15810 event pairs, 298 based on Foata normal form. 2/2654 useless extension candidates. Maximal degree in co-relation 17032. Up to 1999 conditions per place. [2024-06-28 00:52:59,011 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 213 selfloop transitions, 118 changer transitions 0/337 dead transitions. [2024-06-28 00:52:59,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 337 transitions, 5222 flow [2024-06-28 00:52:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:52:59,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-06-28 00:52:59,013 INFO L175 Difference]: Start difference. First operand has 188 places, 292 transitions, 4193 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:52:59,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 337 transitions, 5222 flow [2024-06-28 00:52:59,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 337 transitions, 5041 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:59,116 INFO L231 Difference]: Finished difference. Result has 192 places, 304 transitions, 4411 flow [2024-06-28 00:52:59,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4411, PETRI_PLACES=192, PETRI_TRANSITIONS=304} [2024-06-28 00:52:59,117 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-06-28 00:52:59,117 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 304 transitions, 4411 flow [2024-06-28 00:52:59,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:59,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:59,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:59,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:52:59,118 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:59,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 892668048, now seen corresponding path program 5 times [2024-06-28 00:52:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069034291] [2024-06-28 00:52:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069034291] [2024-06-28 00:52:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069034291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636804235] [2024-06-28 00:52:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:59,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:59,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:59,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:52:59,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 304 transitions, 4411 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:59,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:59,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:52:59,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:00,573 INFO L124 PetriNetUnfolderBase]: 1608/2802 cut-off events. [2024-06-28 00:53:00,574 INFO L125 PetriNetUnfolderBase]: For 42822/42822 co-relation queries the response was YES. [2024-06-28 00:53:00,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17715 conditions, 2802 events. 1608/2802 cut-off events. For 42822/42822 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16256 event pairs, 264 based on Foata normal form. 2/2723 useless extension candidates. Maximal degree in co-relation 17626. Up to 1825 conditions per place. [2024-06-28 00:53:00,597 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 189 selfloop transitions, 154 changer transitions 0/349 dead transitions. [2024-06-28 00:53:00,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 349 transitions, 5574 flow [2024-06-28 00:53:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 00:53:00,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-28 00:53:00,600 INFO L175 Difference]: Start difference. First operand has 192 places, 304 transitions, 4411 flow. Second operand 8 states and 145 transitions. [2024-06-28 00:53:00,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 349 transitions, 5574 flow [2024-06-28 00:53:00,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 349 transitions, 5318 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:00,694 INFO L231 Difference]: Finished difference. Result has 197 places, 315 transitions, 4755 flow [2024-06-28 00:53:00,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4755, PETRI_PLACES=197, PETRI_TRANSITIONS=315} [2024-06-28 00:53:00,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 00:53:00,696 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 315 transitions, 4755 flow [2024-06-28 00:53:00,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:00,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:00,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:53:00,696 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:00,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -446853062, now seen corresponding path program 2 times [2024-06-28 00:53:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316852067] [2024-06-28 00:53:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316852067] [2024-06-28 00:53:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316852067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682618675] [2024-06-28 00:53:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:01,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:01,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 315 transitions, 4755 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:01,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:01,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:01,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:02,211 INFO L124 PetriNetUnfolderBase]: 1644/2868 cut-off events. [2024-06-28 00:53:02,212 INFO L125 PetriNetUnfolderBase]: For 47656/47656 co-relation queries the response was YES. [2024-06-28 00:53:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 2868 events. 1644/2868 cut-off events. For 47656/47656 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16707 event pairs, 451 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 18591. Up to 2165 conditions per place. [2024-06-28 00:53:02,239 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 254 selfloop transitions, 96 changer transitions 0/356 dead transitions. [2024-06-28 00:53:02,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 356 transitions, 5813 flow [2024-06-28 00:53:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:53:02,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-28 00:53:02,240 INFO L175 Difference]: Start difference. First operand has 197 places, 315 transitions, 4755 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:53:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 356 transitions, 5813 flow [2024-06-28 00:53:02,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 356 transitions, 5573 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:02,403 INFO L231 Difference]: Finished difference. Result has 201 places, 324 transitions, 4957 flow [2024-06-28 00:53:02,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4957, PETRI_PLACES=201, PETRI_TRANSITIONS=324} [2024-06-28 00:53:02,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 00:53:02,404 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 324 transitions, 4957 flow [2024-06-28 00:53:02,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:02,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:02,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:02,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:53:02,405 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:02,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1036798146, now seen corresponding path program 2 times [2024-06-28 00:53:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918455851] [2024-06-28 00:53:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918455851] [2024-06-28 00:53:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918455851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:03,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993270402] [2024-06-28 00:53:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:03,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:03,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 324 transitions, 4957 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:03,962 INFO L124 PetriNetUnfolderBase]: 1682/2931 cut-off events. [2024-06-28 00:53:03,963 INFO L125 PetriNetUnfolderBase]: For 50330/50336 co-relation queries the response was YES. [2024-06-28 00:53:03,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19250 conditions, 2931 events. 1682/2931 cut-off events. For 50330/50336 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17219 event pairs, 393 based on Foata normal form. 6/2852 useless extension candidates. Maximal degree in co-relation 19157. Up to 2236 conditions per place. [2024-06-28 00:53:03,990 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 262 selfloop transitions, 99 changer transitions 0/367 dead transitions. [2024-06-28 00:53:03,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 367 transitions, 5986 flow [2024-06-28 00:53:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 00:53:03,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-06-28 00:53:03,992 INFO L175 Difference]: Start difference. First operand has 201 places, 324 transitions, 4957 flow. Second operand 9 states and 160 transitions. [2024-06-28 00:53:03,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 367 transitions, 5986 flow [2024-06-28 00:53:04,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 367 transitions, 5905 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 00:53:04,136 INFO L231 Difference]: Finished difference. Result has 209 places, 331 transitions, 5231 flow [2024-06-28 00:53:04,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4876, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5231, PETRI_PLACES=209, PETRI_TRANSITIONS=331} [2024-06-28 00:53:04,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-28 00:53:04,137 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 331 transitions, 5231 flow [2024-06-28 00:53:04,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:04,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:04,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:53:04,142 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:04,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1926557920, now seen corresponding path program 3 times [2024-06-28 00:53:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906432317] [2024-06-28 00:53:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906432317] [2024-06-28 00:53:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906432317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:04,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:04,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164992662] [2024-06-28 00:53:04,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:04,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:05,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:05,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 331 transitions, 5231 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:05,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:05,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:05,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:05,936 INFO L124 PetriNetUnfolderBase]: 1768/3065 cut-off events. [2024-06-28 00:53:05,936 INFO L125 PetriNetUnfolderBase]: For 55990/55996 co-relation queries the response was YES. [2024-06-28 00:53:05,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20659 conditions, 3065 events. 1768/3065 cut-off events. For 55990/55996 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18062 event pairs, 342 based on Foata normal form. 6/2983 useless extension candidates. Maximal degree in co-relation 20563. Up to 1694 conditions per place. [2024-06-28 00:53:05,966 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 254 selfloop transitions, 126 changer transitions 0/386 dead transitions. [2024-06-28 00:53:05,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 386 transitions, 6608 flow [2024-06-28 00:53:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 00:53:05,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-28 00:53:05,968 INFO L175 Difference]: Start difference. First operand has 209 places, 331 transitions, 5231 flow. Second operand 9 states and 166 transitions. [2024-06-28 00:53:05,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 386 transitions, 6608 flow [2024-06-28 00:53:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 386 transitions, 6357 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:06,112 INFO L231 Difference]: Finished difference. Result has 215 places, 344 transitions, 5587 flow [2024-06-28 00:53:06,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5587, PETRI_PLACES=215, PETRI_TRANSITIONS=344} [2024-06-28 00:53:06,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-28 00:53:06,113 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 344 transitions, 5587 flow [2024-06-28 00:53:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:06,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:06,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:06,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:53:06,114 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:06,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2111419042, now seen corresponding path program 6 times [2024-06-28 00:53:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:06,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987319785] [2024-06-28 00:53:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:06,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987319785] [2024-06-28 00:53:06,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987319785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:06,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:06,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007837983] [2024-06-28 00:53:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:06,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:06,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:06,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:06,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 344 transitions, 5587 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:06,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:06,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:06,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:07,701 INFO L124 PetriNetUnfolderBase]: 1788/3095 cut-off events. [2024-06-28 00:53:07,701 INFO L125 PetriNetUnfolderBase]: For 61750/61756 co-relation queries the response was YES. [2024-06-28 00:53:07,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21743 conditions, 3095 events. 1788/3095 cut-off events. For 61750/61756 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18316 event pairs, 361 based on Foata normal form. 3/3007 useless extension candidates. Maximal degree in co-relation 21643. Up to 2371 conditions per place. [2024-06-28 00:53:07,735 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 260 selfloop transitions, 112 changer transitions 0/378 dead transitions. [2024-06-28 00:53:07,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 378 transitions, 6639 flow [2024-06-28 00:53:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:53:07,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 00:53:07,741 INFO L175 Difference]: Start difference. First operand has 215 places, 344 transitions, 5587 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:53:07,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 378 transitions, 6639 flow [2024-06-28 00:53:07,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 378 transitions, 6472 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:07,912 INFO L231 Difference]: Finished difference. Result has 220 places, 347 transitions, 5741 flow [2024-06-28 00:53:07,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5741, PETRI_PLACES=220, PETRI_TRANSITIONS=347} [2024-06-28 00:53:07,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-06-28 00:53:07,913 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 347 transitions, 5741 flow [2024-06-28 00:53:07,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:07,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:07,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:07,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:53:07,914 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:07,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash 631953598, now seen corresponding path program 7 times [2024-06-28 00:53:07,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:07,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838878072] [2024-06-28 00:53:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838878072] [2024-06-28 00:53:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838878072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428067493] [2024-06-28 00:53:08,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:08,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:08,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 347 transitions, 5741 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:08,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:08,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:08,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:09,456 INFO L124 PetriNetUnfolderBase]: 1818/3137 cut-off events. [2024-06-28 00:53:09,456 INFO L125 PetriNetUnfolderBase]: For 65000/65006 co-relation queries the response was YES. [2024-06-28 00:53:09,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22476 conditions, 3137 events. 1818/3137 cut-off events. For 65000/65006 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18590 event pairs, 352 based on Foata normal form. 3/3050 useless extension candidates. Maximal degree in co-relation 22374. Up to 2363 conditions per place. [2024-06-28 00:53:09,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 263 selfloop transitions, 126 changer transitions 0/395 dead transitions. [2024-06-28 00:53:09,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 395 transitions, 7037 flow [2024-06-28 00:53:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:53:09,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 00:53:09,488 INFO L175 Difference]: Start difference. First operand has 220 places, 347 transitions, 5741 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:53:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 395 transitions, 7037 flow [2024-06-28 00:53:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 395 transitions, 6596 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:09,645 INFO L231 Difference]: Finished difference. Result has 223 places, 363 transitions, 5902 flow [2024-06-28 00:53:09,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5902, PETRI_PLACES=223, PETRI_TRANSITIONS=363} [2024-06-28 00:53:09,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-28 00:53:09,646 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 363 transitions, 5902 flow [2024-06-28 00:53:09,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:53:09,646 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1826082022, now seen corresponding path program 8 times [2024-06-28 00:53:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136518219] [2024-06-28 00:53:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:10,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:10,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136518219] [2024-06-28 00:53:10,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136518219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:10,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:10,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944051505] [2024-06-28 00:53:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:10,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:10,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 363 transitions, 5902 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:10,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:10,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:10,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:11,200 INFO L124 PetriNetUnfolderBase]: 1818/3131 cut-off events. [2024-06-28 00:53:11,200 INFO L125 PetriNetUnfolderBase]: For 65831/65837 co-relation queries the response was YES. [2024-06-28 00:53:11,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22649 conditions, 3131 events. 1818/3131 cut-off events. For 65831/65837 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18539 event pairs, 245 based on Foata normal form. 3/3046 useless extension candidates. Maximal degree in co-relation 22544. Up to 2010 conditions per place. [2024-06-28 00:53:11,232 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 216 selfloop transitions, 179 changer transitions 0/401 dead transitions. [2024-06-28 00:53:11,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 401 transitions, 7160 flow [2024-06-28 00:53:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:53:11,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 00:53:11,233 INFO L175 Difference]: Start difference. First operand has 223 places, 363 transitions, 5902 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:53:11,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 401 transitions, 7160 flow [2024-06-28 00:53:11,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 401 transitions, 6939 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:11,405 INFO L231 Difference]: Finished difference. Result has 228 places, 369 transitions, 6235 flow [2024-06-28 00:53:11,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5681, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6235, PETRI_PLACES=228, PETRI_TRANSITIONS=369} [2024-06-28 00:53:11,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 186 predicate places. [2024-06-28 00:53:11,406 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 369 transitions, 6235 flow [2024-06-28 00:53:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:11,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:11,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:53:11,406 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:11,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1947609056, now seen corresponding path program 4 times [2024-06-28 00:53:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:11,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838216679] [2024-06-28 00:53:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:12,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:12,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838216679] [2024-06-28 00:53:12,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838216679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:12,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:12,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:12,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508902593] [2024-06-28 00:53:12,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:12,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:12,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:12,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:12,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 369 transitions, 6235 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:13,575 INFO L124 PetriNetUnfolderBase]: 1850/3187 cut-off events. [2024-06-28 00:53:13,576 INFO L125 PetriNetUnfolderBase]: For 71772/71778 co-relation queries the response was YES. [2024-06-28 00:53:13,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23367 conditions, 3187 events. 1850/3187 cut-off events. For 71772/71778 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18873 event pairs, 408 based on Foata normal form. 6/3106 useless extension candidates. Maximal degree in co-relation 23261. Up to 1776 conditions per place. [2024-06-28 00:53:13,610 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 291 selfloop transitions, 118 changer transitions 0/415 dead transitions. [2024-06-28 00:53:13,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 415 transitions, 7623 flow [2024-06-28 00:53:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 00:53:13,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 00:53:13,611 INFO L175 Difference]: Start difference. First operand has 228 places, 369 transitions, 6235 flow. Second operand 9 states and 167 transitions. [2024-06-28 00:53:13,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 415 transitions, 7623 flow [2024-06-28 00:53:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 415 transitions, 7407 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:13,801 INFO L231 Difference]: Finished difference. Result has 234 places, 374 transitions, 6406 flow [2024-06-28 00:53:13,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6019, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6406, PETRI_PLACES=234, PETRI_TRANSITIONS=374} [2024-06-28 00:53:13,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 00:53:13,802 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 374 transitions, 6406 flow [2024-06-28 00:53:13,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:13,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:13,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:13,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:53:13,802 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:13,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2111412284, now seen corresponding path program 3 times [2024-06-28 00:53:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760283272] [2024-06-28 00:53:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:14,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760283272] [2024-06-28 00:53:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760283272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:14,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054988774] [2024-06-28 00:53:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:14,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:14,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 374 transitions, 6406 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:14,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:14,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:14,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:15,374 INFO L124 PetriNetUnfolderBase]: 1854/3191 cut-off events. [2024-06-28 00:53:15,374 INFO L125 PetriNetUnfolderBase]: For 72746/72752 co-relation queries the response was YES. [2024-06-28 00:53:15,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23835 conditions, 3191 events. 1854/3191 cut-off events. For 72746/72752 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18984 event pairs, 471 based on Foata normal form. 5/3110 useless extension candidates. Maximal degree in co-relation 23726. Up to 2585 conditions per place. [2024-06-28 00:53:15,411 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 323 selfloop transitions, 79 changer transitions 0/408 dead transitions. [2024-06-28 00:53:15,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 408 transitions, 7514 flow [2024-06-28 00:53:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:53:15,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-06-28 00:53:15,412 INFO L175 Difference]: Start difference. First operand has 234 places, 374 transitions, 6406 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:53:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 408 transitions, 7514 flow [2024-06-28 00:53:15,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 408 transitions, 7240 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:15,646 INFO L231 Difference]: Finished difference. Result has 238 places, 378 transitions, 6461 flow [2024-06-28 00:53:15,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6461, PETRI_PLACES=238, PETRI_TRANSITIONS=378} [2024-06-28 00:53:15,647 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 00:53:15,647 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 378 transitions, 6461 flow [2024-06-28 00:53:15,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:15,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:15,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:15,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:53:15,648 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:15,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2062258370, now seen corresponding path program 5 times [2024-06-28 00:53:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2206201] [2024-06-28 00:53:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:16,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2206201] [2024-06-28 00:53:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2206201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:16,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025450422] [2024-06-28 00:53:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:16,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:16,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:16,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 378 transitions, 6461 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:16,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:16,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:16,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:17,306 INFO L124 PetriNetUnfolderBase]: 1876/3232 cut-off events. [2024-06-28 00:53:17,307 INFO L125 PetriNetUnfolderBase]: For 75422/75428 co-relation queries the response was YES. [2024-06-28 00:53:17,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23999 conditions, 3232 events. 1876/3232 cut-off events. For 75422/75428 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19285 event pairs, 474 based on Foata normal form. 6/3150 useless extension candidates. Maximal degree in co-relation 23888. Up to 2630 conditions per place. [2024-06-28 00:53:17,343 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 331 selfloop transitions, 80 changer transitions 0/417 dead transitions. [2024-06-28 00:53:17,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 417 transitions, 7618 flow [2024-06-28 00:53:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 00:53:17,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-28 00:53:17,344 INFO L175 Difference]: Start difference. First operand has 238 places, 378 transitions, 6461 flow. Second operand 9 states and 157 transitions. [2024-06-28 00:53:17,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 417 transitions, 7618 flow [2024-06-28 00:53:17,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 417 transitions, 7398 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:17,587 INFO L231 Difference]: Finished difference. Result has 244 places, 383 transitions, 6570 flow [2024-06-28 00:53:17,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6241, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6570, PETRI_PLACES=244, PETRI_TRANSITIONS=383} [2024-06-28 00:53:17,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 00:53:17,588 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 383 transitions, 6570 flow [2024-06-28 00:53:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:17,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:17,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:53:17,588 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1937133536, now seen corresponding path program 6 times [2024-06-28 00:53:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470463361] [2024-06-28 00:53:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:18,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:18,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470463361] [2024-06-28 00:53:18,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470463361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:18,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787985311] [2024-06-28 00:53:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:18,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:18,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 383 transitions, 6570 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:18,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:18,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:18,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:19,313 INFO L124 PetriNetUnfolderBase]: 1921/3315 cut-off events. [2024-06-28 00:53:19,314 INFO L125 PetriNetUnfolderBase]: For 80851/80851 co-relation queries the response was YES. [2024-06-28 00:53:19,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24534 conditions, 3315 events. 1921/3315 cut-off events. For 80851/80851 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19953 event pairs, 630 based on Foata normal form. 4/3231 useless extension candidates. Maximal degree in co-relation 24421. Up to 2877 conditions per place. [2024-06-28 00:53:19,351 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 396 selfloop transitions, 28 changer transitions 0/430 dead transitions. [2024-06-28 00:53:19,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 430 transitions, 7953 flow [2024-06-28 00:53:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 00:53:19,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-28 00:53:19,352 INFO L175 Difference]: Start difference. First operand has 244 places, 383 transitions, 6570 flow. Second operand 10 states and 167 transitions. [2024-06-28 00:53:19,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 430 transitions, 7953 flow [2024-06-28 00:53:19,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 430 transitions, 7674 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:19,616 INFO L231 Difference]: Finished difference. Result has 249 places, 392 transitions, 6574 flow [2024-06-28 00:53:19,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6299, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6574, PETRI_PLACES=249, PETRI_TRANSITIONS=392} [2024-06-28 00:53:19,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 00:53:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 392 transitions, 6574 flow [2024-06-28 00:53:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:19,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:19,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:19,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:53:19,626 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1937120640, now seen corresponding path program 1 times [2024-06-28 00:53:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:19,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745526027] [2024-06-28 00:53:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745526027] [2024-06-28 00:53:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745526027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:21,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353181888] [2024-06-28 00:53:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:21,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:21,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 392 transitions, 6574 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:21,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:21,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:21,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:22,114 INFO L124 PetriNetUnfolderBase]: 1931/3333 cut-off events. [2024-06-28 00:53:22,115 INFO L125 PetriNetUnfolderBase]: For 80172/80172 co-relation queries the response was YES. [2024-06-28 00:53:22,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24502 conditions, 3333 events. 1931/3333 cut-off events. For 80172/80172 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 20045 event pairs, 644 based on Foata normal form. 2/3247 useless extension candidates. Maximal degree in co-relation 24387. Up to 2954 conditions per place. [2024-06-28 00:53:22,151 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 404 selfloop transitions, 25 changer transitions 0/435 dead transitions. [2024-06-28 00:53:22,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 435 transitions, 7873 flow [2024-06-28 00:53:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:53:22,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 00:53:22,153 INFO L175 Difference]: Start difference. First operand has 249 places, 392 transitions, 6574 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:53:22,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 435 transitions, 7873 flow [2024-06-28 00:53:22,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 435 transitions, 7738 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:22,498 INFO L231 Difference]: Finished difference. Result has 254 places, 400 transitions, 6753 flow [2024-06-28 00:53:22,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6753, PETRI_PLACES=254, PETRI_TRANSITIONS=400} [2024-06-28 00:53:22,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-28 00:53:22,500 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 400 transitions, 6753 flow [2024-06-28 00:53:22,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:22,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:22,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:22,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:53:22,500 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:22,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash 846528749, now seen corresponding path program 1 times [2024-06-28 00:53:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051445791] [2024-06-28 00:53:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051445791] [2024-06-28 00:53:22,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051445791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:22,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:22,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:53:22,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477581737] [2024-06-28 00:53:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:53:22,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:53:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:53:22,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 00:53:22,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 400 transitions, 6753 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:22,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:22,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 00:53:22,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:22,974 INFO L124 PetriNetUnfolderBase]: 939/1709 cut-off events. [2024-06-28 00:53:22,975 INFO L125 PetriNetUnfolderBase]: For 45637/45703 co-relation queries the response was YES. [2024-06-28 00:53:22,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 1709 events. 939/1709 cut-off events. For 45637/45703 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9473 event pairs, 296 based on Foata normal form. 179/1792 useless extension candidates. Maximal degree in co-relation 11739. Up to 745 conditions per place. [2024-06-28 00:53:22,992 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 117 selfloop transitions, 42 changer transitions 0/224 dead transitions. [2024-06-28 00:53:22,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 224 transitions, 3926 flow [2024-06-28 00:53:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:53:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:53:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 00:53:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2024-06-28 00:53:22,994 INFO L175 Difference]: Start difference. First operand has 254 places, 400 transitions, 6753 flow. Second operand 4 states and 102 transitions. [2024-06-28 00:53:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 224 transitions, 3926 flow [2024-06-28 00:53:23,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 224 transitions, 2934 flow, removed 76 selfloop flow, removed 74 redundant places. [2024-06-28 00:53:23,097 INFO L231 Difference]: Finished difference. Result has 185 places, 207 transitions, 2644 flow [2024-06-28 00:53:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2644, PETRI_PLACES=185, PETRI_TRANSITIONS=207} [2024-06-28 00:53:23,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 00:53:23,098 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 207 transitions, 2644 flow [2024-06-28 00:53:23,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:23,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:23,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:23,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:53:23,098 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:23,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1804368467, now seen corresponding path program 1 times [2024-06-28 00:53:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745851399] [2024-06-28 00:53:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745851399] [2024-06-28 00:53:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745851399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:23,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:23,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904307743] [2024-06-28 00:53:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:23,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:23,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:23,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 00:53:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 207 transitions, 2644 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 00:53:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:24,138 INFO L124 PetriNetUnfolderBase]: 944/1700 cut-off events. [2024-06-28 00:53:24,139 INFO L125 PetriNetUnfolderBase]: For 32348/32361 co-relation queries the response was YES. [2024-06-28 00:53:24,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10946 conditions, 1700 events. 944/1700 cut-off events. For 32348/32361 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8727 event pairs, 147 based on Foata normal form. 10/1631 useless extension candidates. Maximal degree in co-relation 10860. Up to 1272 conditions per place. [2024-06-28 00:53:24,153 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 154 selfloop transitions, 61 changer transitions 0/231 dead transitions. [2024-06-28 00:53:24,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 231 transitions, 3348 flow [2024-06-28 00:53:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:53:24,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2024-06-28 00:53:24,156 INFO L175 Difference]: Start difference. First operand has 185 places, 207 transitions, 2644 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:53:24,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 231 transitions, 3348 flow [2024-06-28 00:53:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 231 transitions, 3346 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:53:24,240 INFO L231 Difference]: Finished difference. Result has 191 places, 211 transitions, 2881 flow [2024-06-28 00:53:24,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2881, PETRI_PLACES=191, PETRI_TRANSITIONS=211} [2024-06-28 00:53:24,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-28 00:53:24,243 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 211 transitions, 2881 flow [2024-06-28 00:53:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:24,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:24,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:24,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:53:24,243 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:24,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 797147021, now seen corresponding path program 2 times [2024-06-28 00:53:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796711166] [2024-06-28 00:53:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:25,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796711166] [2024-06-28 00:53:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796711166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346259273] [2024-06-28 00:53:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:25,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:25,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:25,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 211 transitions, 2881 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:25,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:25,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:25,853 INFO L124 PetriNetUnfolderBase]: 982/1750 cut-off events. [2024-06-28 00:53:25,854 INFO L125 PetriNetUnfolderBase]: For 35989/35989 co-relation queries the response was YES. [2024-06-28 00:53:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1750 events. 982/1750 cut-off events. For 35989/35989 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8980 event pairs, 210 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 11476. Up to 1501 conditions per place. [2024-06-28 00:53:25,866 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 191 selfloop transitions, 38 changer transitions 0/236 dead transitions. [2024-06-28 00:53:25,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 236 transitions, 3503 flow [2024-06-28 00:53:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:53:25,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-06-28 00:53:25,867 INFO L175 Difference]: Start difference. First operand has 191 places, 211 transitions, 2881 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:53:25,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 236 transitions, 3503 flow [2024-06-28 00:53:25,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 236 transitions, 3364 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:25,950 INFO L231 Difference]: Finished difference. Result has 197 places, 213 transitions, 2890 flow [2024-06-28 00:53:25,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2890, PETRI_PLACES=197, PETRI_TRANSITIONS=213} [2024-06-28 00:53:25,951 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 00:53:25,951 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 213 transitions, 2890 flow [2024-06-28 00:53:25,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:25,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:25,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:25,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:53:25,952 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:25,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash 82844699, now seen corresponding path program 3 times [2024-06-28 00:53:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46480438] [2024-06-28 00:53:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46480438] [2024-06-28 00:53:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46480438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:26,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:26,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070680153] [2024-06-28 00:53:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:26,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:26,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:26,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 213 transitions, 2890 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:26,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:26,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:27,269 INFO L124 PetriNetUnfolderBase]: 1008/1802 cut-off events. [2024-06-28 00:53:27,269 INFO L125 PetriNetUnfolderBase]: For 37471/37471 co-relation queries the response was YES. [2024-06-28 00:53:27,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11861 conditions, 1802 events. 1008/1802 cut-off events. For 37471/37471 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9356 event pairs, 261 based on Foata normal form. 2/1731 useless extension candidates. Maximal degree in co-relation 11770. Up to 1512 conditions per place. [2024-06-28 00:53:27,285 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 189 selfloop transitions, 51 changer transitions 0/247 dead transitions. [2024-06-28 00:53:27,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 247 transitions, 3612 flow [2024-06-28 00:53:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:53:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:53:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:53:27,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-06-28 00:53:27,286 INFO L175 Difference]: Start difference. First operand has 197 places, 213 transitions, 2890 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:53:27,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 247 transitions, 3612 flow [2024-06-28 00:53:27,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 247 transitions, 3466 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:27,374 INFO L231 Difference]: Finished difference. Result has 201 places, 219 transitions, 2988 flow [2024-06-28 00:53:27,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2988, PETRI_PLACES=201, PETRI_TRANSITIONS=219} [2024-06-28 00:53:27,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 00:53:27,375 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 219 transitions, 2988 flow [2024-06-28 00:53:27,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:27,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:27,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:27,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:53:27,376 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:27,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash 213148599, now seen corresponding path program 1 times [2024-06-28 00:53:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472270009] [2024-06-28 00:53:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472270009] [2024-06-28 00:53:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472270009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:28,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:28,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:28,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488081568] [2024-06-28 00:53:28,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:28,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:28,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:28,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:28,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:28,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 219 transitions, 2988 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:28,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:28,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:28,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:28,657 INFO L124 PetriNetUnfolderBase]: 1019/1820 cut-off events. [2024-06-28 00:53:28,658 INFO L125 PetriNetUnfolderBase]: For 38374/38374 co-relation queries the response was YES. [2024-06-28 00:53:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 1820 events. 1019/1820 cut-off events. For 38374/38374 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9455 event pairs, 257 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 11921. Up to 1550 conditions per place. [2024-06-28 00:53:28,673 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 197 selfloop transitions, 47 changer transitions 0/251 dead transitions. [2024-06-28 00:53:28,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 251 transitions, 3644 flow [2024-06-28 00:53:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:53:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:53:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 00:53:28,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38377192982456143 [2024-06-28 00:53:28,674 INFO L175 Difference]: Start difference. First operand has 201 places, 219 transitions, 2988 flow. Second operand 12 states and 175 transitions. [2024-06-28 00:53:28,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 251 transitions, 3644 flow [2024-06-28 00:53:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 251 transitions, 3511 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:28,773 INFO L231 Difference]: Finished difference. Result has 208 places, 226 transitions, 3040 flow [2024-06-28 00:53:28,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3040, PETRI_PLACES=208, PETRI_TRANSITIONS=226} [2024-06-28 00:53:28,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-28 00:53:28,773 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 226 transitions, 3040 flow [2024-06-28 00:53:28,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:28,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:53:28,774 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:28,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1501085979, now seen corresponding path program 2 times [2024-06-28 00:53:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911836022] [2024-06-28 00:53:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911836022] [2024-06-28 00:53:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911836022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184132460] [2024-06-28 00:53:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:29,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:29,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 226 transitions, 3040 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:29,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:29,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:29,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:30,033 INFO L124 PetriNetUnfolderBase]: 1033/1837 cut-off events. [2024-06-28 00:53:30,033 INFO L125 PetriNetUnfolderBase]: For 38953/38953 co-relation queries the response was YES. [2024-06-28 00:53:30,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 1837 events. 1033/1837 cut-off events. For 38953/38953 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9534 event pairs, 210 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 12207. Up to 1589 conditions per place. [2024-06-28 00:53:30,050 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 205 selfloop transitions, 41 changer transitions 0/253 dead transitions. [2024-06-28 00:53:30,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 253 transitions, 3709 flow [2024-06-28 00:53:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:53:30,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-28 00:53:30,051 INFO L175 Difference]: Start difference. First operand has 208 places, 226 transitions, 3040 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:53:30,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 253 transitions, 3709 flow [2024-06-28 00:53:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 253 transitions, 3513 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 00:53:30,159 INFO L231 Difference]: Finished difference. Result has 208 places, 230 transitions, 3021 flow [2024-06-28 00:53:30,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3021, PETRI_PLACES=208, PETRI_TRANSITIONS=230} [2024-06-28 00:53:30,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-28 00:53:30,160 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 230 transitions, 3021 flow [2024-06-28 00:53:30,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:30,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:30,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:53:30,161 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:30,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:30,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1415607416, now seen corresponding path program 1 times [2024-06-28 00:53:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679304807] [2024-06-28 00:53:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:31,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:31,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679304807] [2024-06-28 00:53:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679304807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:31,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:31,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313668753] [2024-06-28 00:53:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:31,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:31,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 230 transitions, 3021 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:31,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:31,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:31,646 INFO L124 PetriNetUnfolderBase]: 1041/1849 cut-off events. [2024-06-28 00:53:31,646 INFO L125 PetriNetUnfolderBase]: For 39633/39633 co-relation queries the response was YES. [2024-06-28 00:53:31,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12329 conditions, 1849 events. 1041/1849 cut-off events. For 39633/39633 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9585 event pairs, 210 based on Foata normal form. 1/1769 useless extension candidates. Maximal degree in co-relation 12234. Up to 1603 conditions per place. [2024-06-28 00:53:31,661 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 204 selfloop transitions, 44 changer transitions 0/255 dead transitions. [2024-06-28 00:53:31,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 255 transitions, 3674 flow [2024-06-28 00:53:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:53:31,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-06-28 00:53:31,663 INFO L175 Difference]: Start difference. First operand has 208 places, 230 transitions, 3021 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:53:31,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 255 transitions, 3674 flow [2024-06-28 00:53:31,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 255 transitions, 3572 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:31,763 INFO L231 Difference]: Finished difference. Result has 209 places, 234 transitions, 3095 flow [2024-06-28 00:53:31,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3095, PETRI_PLACES=209, PETRI_TRANSITIONS=234} [2024-06-28 00:53:31,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-28 00:53:31,763 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 234 transitions, 3095 flow [2024-06-28 00:53:31,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:31,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:31,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:53:31,764 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:31,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1411138921, now seen corresponding path program 4 times [2024-06-28 00:53:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820350354] [2024-06-28 00:53:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:32,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820350354] [2024-06-28 00:53:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820350354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:32,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398620226] [2024-06-28 00:53:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:32,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:32,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:32,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 234 transitions, 3095 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:32,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:32,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:32,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:33,445 INFO L124 PetriNetUnfolderBase]: 1063/1889 cut-off events. [2024-06-28 00:53:33,446 INFO L125 PetriNetUnfolderBase]: For 42450/42450 co-relation queries the response was YES. [2024-06-28 00:53:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12606 conditions, 1889 events. 1063/1889 cut-off events. For 42450/42450 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9881 event pairs, 207 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 12510. Up to 1538 conditions per place. [2024-06-28 00:53:33,461 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 180 selfloop transitions, 77 changer transitions 0/264 dead transitions. [2024-06-28 00:53:33,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 264 transitions, 3819 flow [2024-06-28 00:53:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:53:33,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-28 00:53:33,463 INFO L175 Difference]: Start difference. First operand has 209 places, 234 transitions, 3095 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:53:33,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 264 transitions, 3819 flow [2024-06-28 00:53:33,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 264 transitions, 3721 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:33,565 INFO L231 Difference]: Finished difference. Result has 212 places, 242 transitions, 3307 flow [2024-06-28 00:53:33,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3307, PETRI_PLACES=212, PETRI_TRANSITIONS=242} [2024-06-28 00:53:33,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-28 00:53:33,566 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 242 transitions, 3307 flow [2024-06-28 00:53:33,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:33,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:33,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:33,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:53:33,567 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:33,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1616377149, now seen corresponding path program 3 times [2024-06-28 00:53:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54784404] [2024-06-28 00:53:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:33,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:34,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54784404] [2024-06-28 00:53:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54784404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:34,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:34,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146441343] [2024-06-28 00:53:34,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:34,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:34,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:34,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 242 transitions, 3307 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:34,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:34,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:34,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:34,933 INFO L124 PetriNetUnfolderBase]: 1074/1906 cut-off events. [2024-06-28 00:53:34,933 INFO L125 PetriNetUnfolderBase]: For 45091/45091 co-relation queries the response was YES. [2024-06-28 00:53:34,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12990 conditions, 1906 events. 1074/1906 cut-off events. For 45091/45091 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9962 event pairs, 207 based on Foata normal form. 2/1823 useless extension candidates. Maximal degree in co-relation 12892. Up to 1547 conditions per place. [2024-06-28 00:53:34,950 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 181 selfloop transitions, 79 changer transitions 0/267 dead transitions. [2024-06-28 00:53:34,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 267 transitions, 3965 flow [2024-06-28 00:53:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:53:34,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 00:53:34,951 INFO L175 Difference]: Start difference. First operand has 212 places, 242 transitions, 3307 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:53:34,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 267 transitions, 3965 flow [2024-06-28 00:53:35,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 267 transitions, 3793 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:35,060 INFO L231 Difference]: Finished difference. Result has 217 places, 244 transitions, 3344 flow [2024-06-28 00:53:35,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3135, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3344, PETRI_PLACES=217, PETRI_TRANSITIONS=244} [2024-06-28 00:53:35,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-28 00:53:35,061 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 244 transitions, 3344 flow [2024-06-28 00:53:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:35,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:35,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:35,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:53:35,062 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:35,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:35,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1616586678, now seen corresponding path program 1 times [2024-06-28 00:53:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:35,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570516150] [2024-06-28 00:53:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570516150] [2024-06-28 00:53:36,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570516150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105108110] [2024-06-28 00:53:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:36,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:36,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 244 transitions, 3344 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:36,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:36,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:36,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:36,785 INFO L124 PetriNetUnfolderBase]: 1079/1917 cut-off events. [2024-06-28 00:53:36,785 INFO L125 PetriNetUnfolderBase]: For 45994/45994 co-relation queries the response was YES. [2024-06-28 00:53:36,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13036 conditions, 1917 events. 1079/1917 cut-off events. For 45994/45994 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10078 event pairs, 329 based on Foata normal form. 1/1835 useless extension candidates. Maximal degree in co-relation 12937. Up to 1663 conditions per place. [2024-06-28 00:53:36,803 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 217 selfloop transitions, 43 changer transitions 0/267 dead transitions. [2024-06-28 00:53:36,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 267 transitions, 3988 flow [2024-06-28 00:53:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:53:36,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-06-28 00:53:36,804 INFO L175 Difference]: Start difference. First operand has 217 places, 244 transitions, 3344 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:53:36,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 267 transitions, 3988 flow [2024-06-28 00:53:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 267 transitions, 3802 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:36,927 INFO L231 Difference]: Finished difference. Result has 220 places, 246 transitions, 3290 flow [2024-06-28 00:53:36,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3290, PETRI_PLACES=220, PETRI_TRANSITIONS=246} [2024-06-28 00:53:36,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-06-28 00:53:36,928 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 246 transitions, 3290 flow [2024-06-28 00:53:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:36,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:36,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:53:36,929 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:36,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1616586399, now seen corresponding path program 4 times [2024-06-28 00:53:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103008531] [2024-06-28 00:53:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:37,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:37,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103008531] [2024-06-28 00:53:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103008531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:37,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:37,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:37,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762777728] [2024-06-28 00:53:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:37,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:37,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:37,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:37,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:37,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 246 transitions, 3290 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:37,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:37,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:37,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:38,337 INFO L124 PetriNetUnfolderBase]: 1105/1954 cut-off events. [2024-06-28 00:53:38,337 INFO L125 PetriNetUnfolderBase]: For 49800/49800 co-relation queries the response was YES. [2024-06-28 00:53:38,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13341 conditions, 1954 events. 1105/1954 cut-off events. For 49800/49800 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10257 event pairs, 200 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 13241. Up to 1441 conditions per place. [2024-06-28 00:53:38,354 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 162 selfloop transitions, 108 changer transitions 0/277 dead transitions. [2024-06-28 00:53:38,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 277 transitions, 4124 flow [2024-06-28 00:53:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:53:38,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 00:53:38,355 INFO L175 Difference]: Start difference. First operand has 220 places, 246 transitions, 3290 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:53:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 277 transitions, 4124 flow [2024-06-28 00:53:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 277 transitions, 4022 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:38,483 INFO L231 Difference]: Finished difference. Result has 222 places, 250 transitions, 3506 flow [2024-06-28 00:53:38,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3506, PETRI_PLACES=222, PETRI_TRANSITIONS=250} [2024-06-28 00:53:38,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-28 00:53:38,483 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 250 transitions, 3506 flow [2024-06-28 00:53:38,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:38,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:38,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:38,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:53:38,484 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:38,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1616578959, now seen corresponding path program 5 times [2024-06-28 00:53:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434685598] [2024-06-28 00:53:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:39,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434685598] [2024-06-28 00:53:39,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434685598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:39,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:39,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352862439] [2024-06-28 00:53:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:39,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:39,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 250 transitions, 3506 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:39,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:39,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:39,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:39,844 INFO L124 PetriNetUnfolderBase]: 1109/1960 cut-off events. [2024-06-28 00:53:39,844 INFO L125 PetriNetUnfolderBase]: For 51881/51881 co-relation queries the response was YES. [2024-06-28 00:53:39,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13691 conditions, 1960 events. 1109/1960 cut-off events. For 51881/51881 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10298 event pairs, 200 based on Foata normal form. 2/1874 useless extension candidates. Maximal degree in co-relation 13590. Up to 1530 conditions per place. [2024-06-28 00:53:39,862 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 174 selfloop transitions, 96 changer transitions 0/277 dead transitions. [2024-06-28 00:53:39,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 277 transitions, 4206 flow [2024-06-28 00:53:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:53:39,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 00:53:39,863 INFO L175 Difference]: Start difference. First operand has 222 places, 250 transitions, 3506 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:53:39,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 277 transitions, 4206 flow [2024-06-28 00:53:40,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 277 transitions, 4041 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:40,006 INFO L231 Difference]: Finished difference. Result has 226 places, 252 transitions, 3592 flow [2024-06-28 00:53:40,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3592, PETRI_PLACES=226, PETRI_TRANSITIONS=252} [2024-06-28 00:53:40,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-28 00:53:40,007 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 252 transitions, 3592 flow [2024-06-28 00:53:40,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:40,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:40,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:53:40,008 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:40,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1974306547, now seen corresponding path program 1 times [2024-06-28 00:53:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779251325] [2024-06-28 00:53:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779251325] [2024-06-28 00:53:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779251325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:40,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:40,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813476612] [2024-06-28 00:53:40,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:41,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:41,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 252 transitions, 3592 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:41,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:41,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:41,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:41,624 INFO L124 PetriNetUnfolderBase]: 1121/1986 cut-off events. [2024-06-28 00:53:41,625 INFO L125 PetriNetUnfolderBase]: For 54344/54347 co-relation queries the response was YES. [2024-06-28 00:53:41,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 1986 events. 1121/1986 cut-off events. For 54344/54347 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10568 event pairs, 260 based on Foata normal form. 4/1895 useless extension candidates. Maximal degree in co-relation 13901. Up to 1729 conditions per place. [2024-06-28 00:53:41,642 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 229 selfloop transitions, 42 changer transitions 0/278 dead transitions. [2024-06-28 00:53:41,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 278 transitions, 4276 flow [2024-06-28 00:53:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:53:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:53:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:53:41,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875598086124402 [2024-06-28 00:53:41,644 INFO L175 Difference]: Start difference. First operand has 226 places, 252 transitions, 3592 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:53:41,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 278 transitions, 4276 flow [2024-06-28 00:53:41,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 278 transitions, 4084 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:41,785 INFO L231 Difference]: Finished difference. Result has 231 places, 254 transitions, 3529 flow [2024-06-28 00:53:41,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3529, PETRI_PLACES=231, PETRI_TRANSITIONS=254} [2024-06-28 00:53:41,786 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-06-28 00:53:41,786 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 254 transitions, 3529 flow [2024-06-28 00:53:41,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:41,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:41,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:53:41,787 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:41,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash -133663649, now seen corresponding path program 5 times [2024-06-28 00:53:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:41,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17817974] [2024-06-28 00:53:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:42,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17817974] [2024-06-28 00:53:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17817974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:42,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622715231] [2024-06-28 00:53:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:42,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:42,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:42,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 254 transitions, 3529 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:42,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:42,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:42,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:43,166 INFO L124 PetriNetUnfolderBase]: 1118/1976 cut-off events. [2024-06-28 00:53:43,166 INFO L125 PetriNetUnfolderBase]: For 52357/52357 co-relation queries the response was YES. [2024-06-28 00:53:43,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13739 conditions, 1976 events. 1118/1976 cut-off events. For 52357/52357 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10386 event pairs, 272 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 13635. Up to 1633 conditions per place. [2024-06-28 00:53:43,252 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 216 selfloop transitions, 51 changer transitions 0/274 dead transitions. [2024-06-28 00:53:43,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 4145 flow [2024-06-28 00:53:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:53:43,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-28 00:53:43,253 INFO L175 Difference]: Start difference. First operand has 231 places, 254 transitions, 3529 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:53:43,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 4145 flow [2024-06-28 00:53:43,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 274 transitions, 4008 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:53:43,499 INFO L231 Difference]: Finished difference. Result has 230 places, 254 transitions, 3516 flow [2024-06-28 00:53:43,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3516, PETRI_PLACES=230, PETRI_TRANSITIONS=254} [2024-06-28 00:53:43,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-28 00:53:43,499 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 254 transitions, 3516 flow [2024-06-28 00:53:43,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:43,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:43,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:53:43,500 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:43,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1787407814, now seen corresponding path program 2 times [2024-06-28 00:53:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551547223] [2024-06-28 00:53:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:44,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551547223] [2024-06-28 00:53:44,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551547223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:44,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373926459] [2024-06-28 00:53:44,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:44,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:44,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:44,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 254 transitions, 3516 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:44,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:44,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:44,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:44,761 INFO L124 PetriNetUnfolderBase]: 1116/1974 cut-off events. [2024-06-28 00:53:44,762 INFO L125 PetriNetUnfolderBase]: For 52035/52035 co-relation queries the response was YES. [2024-06-28 00:53:44,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 1974 events. 1116/1974 cut-off events. For 52035/52035 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10386 event pairs, 269 based on Foata normal form. 1/1889 useless extension candidates. Maximal degree in co-relation 13628. Up to 1652 conditions per place. [2024-06-28 00:53:44,781 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 206 selfloop transitions, 59 changer transitions 0/272 dead transitions. [2024-06-28 00:53:44,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 272 transitions, 4116 flow [2024-06-28 00:53:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:53:44,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:53:44,782 INFO L175 Difference]: Start difference. First operand has 230 places, 254 transitions, 3516 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:53:44,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 272 transitions, 4116 flow [2024-06-28 00:53:44,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 272 transitions, 3994 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:44,918 INFO L231 Difference]: Finished difference. Result has 231 places, 254 transitions, 3542 flow [2024-06-28 00:53:44,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3542, PETRI_PLACES=231, PETRI_TRANSITIONS=254} [2024-06-28 00:53:44,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-06-28 00:53:44,919 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 254 transitions, 3542 flow [2024-06-28 00:53:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:44,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:44,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:44,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:53:44,920 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:44,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1083042823, now seen corresponding path program 6 times [2024-06-28 00:53:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327720002] [2024-06-28 00:53:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:44,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327720002] [2024-06-28 00:53:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327720002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:45,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:45,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822458343] [2024-06-28 00:53:45,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:45,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:45,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:45,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 254 transitions, 3542 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:45,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:45,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:45,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:46,365 INFO L124 PetriNetUnfolderBase]: 1127/1991 cut-off events. [2024-06-28 00:53:46,365 INFO L125 PetriNetUnfolderBase]: For 51325/51325 co-relation queries the response was YES. [2024-06-28 00:53:46,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13880 conditions, 1991 events. 1127/1991 cut-off events. For 51325/51325 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10502 event pairs, 270 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 13774. Up to 1663 conditions per place. [2024-06-28 00:53:46,384 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 217 selfloop transitions, 53 changer transitions 0/277 dead transitions. [2024-06-28 00:53:46,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 277 transitions, 4216 flow [2024-06-28 00:53:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:53:46,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40058479532163743 [2024-06-28 00:53:46,385 INFO L175 Difference]: Start difference. First operand has 231 places, 254 transitions, 3542 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:53:46,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 277 transitions, 4216 flow [2024-06-28 00:53:46,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 277 transitions, 4058 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:46,523 INFO L231 Difference]: Finished difference. Result has 233 places, 256 transitions, 3558 flow [2024-06-28 00:53:46,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3558, PETRI_PLACES=233, PETRI_TRANSITIONS=256} [2024-06-28 00:53:46,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-28 00:53:46,524 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 256 transitions, 3558 flow [2024-06-28 00:53:46,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:46,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:46,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:53:46,525 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:46,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -308972943, now seen corresponding path program 7 times [2024-06-28 00:53:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:46,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681455771] [2024-06-28 00:53:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681455771] [2024-06-28 00:53:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681455771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613390616] [2024-06-28 00:53:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:47,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:47,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:47,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 256 transitions, 3558 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:47,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:47,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:47,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:48,064 INFO L124 PetriNetUnfolderBase]: 1138/2004 cut-off events. [2024-06-28 00:53:48,064 INFO L125 PetriNetUnfolderBase]: For 52025/52025 co-relation queries the response was YES. [2024-06-28 00:53:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14046 conditions, 2004 events. 1138/2004 cut-off events. For 52025/52025 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10549 event pairs, 198 based on Foata normal form. 2/1914 useless extension candidates. Maximal degree in co-relation 13939. Up to 1493 conditions per place. [2024-06-28 00:53:48,082 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 174 selfloop transitions, 102 changer transitions 0/283 dead transitions. [2024-06-28 00:53:48,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 283 transitions, 4307 flow [2024-06-28 00:53:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:53:48,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-06-28 00:53:48,084 INFO L175 Difference]: Start difference. First operand has 233 places, 256 transitions, 3558 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:53:48,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 283 transitions, 4307 flow [2024-06-28 00:53:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 283 transitions, 4183 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:48,224 INFO L231 Difference]: Finished difference. Result has 235 places, 258 transitions, 3704 flow [2024-06-28 00:53:48,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3704, PETRI_PLACES=235, PETRI_TRANSITIONS=258} [2024-06-28 00:53:48,225 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-28 00:53:48,226 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 258 transitions, 3704 flow [2024-06-28 00:53:48,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:48,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:48,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:48,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:53:48,226 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:48,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash -967542124, now seen corresponding path program 2 times [2024-06-28 00:53:48,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:48,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845888044] [2024-06-28 00:53:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845888044] [2024-06-28 00:53:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845888044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948517521] [2024-06-28 00:53:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:49,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:49,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 258 transitions, 3704 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:49,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:49,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:49,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:50,106 INFO L124 PetriNetUnfolderBase]: 1143/2015 cut-off events. [2024-06-28 00:53:50,107 INFO L125 PetriNetUnfolderBase]: For 53548/53548 co-relation queries the response was YES. [2024-06-28 00:53:50,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14329 conditions, 2015 events. 1143/2015 cut-off events. For 53548/53548 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10659 event pairs, 330 based on Foata normal form. 1/1926 useless extension candidates. Maximal degree in co-relation 14221. Up to 1708 conditions per place. [2024-06-28 00:53:50,125 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 223 selfloop transitions, 51 changer transitions 0/281 dead transitions. [2024-06-28 00:53:50,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 281 transitions, 4407 flow [2024-06-28 00:53:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:53:50,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2024-06-28 00:53:50,127 INFO L175 Difference]: Start difference. First operand has 235 places, 258 transitions, 3704 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:53:50,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 281 transitions, 4407 flow [2024-06-28 00:53:50,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 281 transitions, 4167 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:50,277 INFO L231 Difference]: Finished difference. Result has 237 places, 260 transitions, 3624 flow [2024-06-28 00:53:50,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3624, PETRI_PLACES=237, PETRI_TRANSITIONS=260} [2024-06-28 00:53:50,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-28 00:53:50,278 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 260 transitions, 3624 flow [2024-06-28 00:53:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:50,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:50,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:50,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:53:50,278 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:50,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1902698829, now seen corresponding path program 6 times [2024-06-28 00:53:50,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:50,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290816026] [2024-06-28 00:53:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290816026] [2024-06-28 00:53:51,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290816026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:51,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:51,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:51,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492476569] [2024-06-28 00:53:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:51,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:51,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 260 transitions, 3624 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:51,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:51,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:51,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:51,802 INFO L124 PetriNetUnfolderBase]: 1159/2041 cut-off events. [2024-06-28 00:53:51,803 INFO L125 PetriNetUnfolderBase]: For 55564/55564 co-relation queries the response was YES. [2024-06-28 00:53:51,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14346 conditions, 2041 events. 1159/2041 cut-off events. For 55564/55564 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10828 event pairs, 221 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 14237. Up to 1667 conditions per place. [2024-06-28 00:53:51,823 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 204 selfloop transitions, 73 changer transitions 0/284 dead transitions. [2024-06-28 00:53:51,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 284 transitions, 4367 flow [2024-06-28 00:53:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:53:51,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243421052631579 [2024-06-28 00:53:51,824 INFO L175 Difference]: Start difference. First operand has 237 places, 260 transitions, 3624 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:53:51,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 284 transitions, 4367 flow [2024-06-28 00:53:52,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 284 transitions, 4247 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:52,027 INFO L231 Difference]: Finished difference. Result has 238 places, 262 transitions, 3726 flow [2024-06-28 00:53:52,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3504, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3726, PETRI_PLACES=238, PETRI_TRANSITIONS=262} [2024-06-28 00:53:52,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 00:53:52,027 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 262 transitions, 3726 flow [2024-06-28 00:53:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:52,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:52,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:53:52,028 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash -308965503, now seen corresponding path program 8 times [2024-06-28 00:53:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410740084] [2024-06-28 00:53:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410740084] [2024-06-28 00:53:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410740084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:52,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181462969] [2024-06-28 00:53:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:53,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:53,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 262 transitions, 3726 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:53,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:53,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:53,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:53,578 INFO L124 PetriNetUnfolderBase]: 1185/2081 cut-off events. [2024-06-28 00:53:53,578 INFO L125 PetriNetUnfolderBase]: For 60350/60350 co-relation queries the response was YES. [2024-06-28 00:53:53,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14927 conditions, 2081 events. 1185/2081 cut-off events. For 60350/60350 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11022 event pairs, 200 based on Foata normal form. 2/1988 useless extension candidates. Maximal degree in co-relation 14817. Up to 1423 conditions per place. [2024-06-28 00:53:53,598 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 162 selfloop transitions, 124 changer transitions 0/293 dead transitions. [2024-06-28 00:53:53,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 293 transitions, 4659 flow [2024-06-28 00:53:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:53:53,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2024-06-28 00:53:53,599 INFO L175 Difference]: Start difference. First operand has 238 places, 262 transitions, 3726 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:53:53,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 293 transitions, 4659 flow [2024-06-28 00:53:53,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 293 transitions, 4459 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:53,758 INFO L231 Difference]: Finished difference. Result has 241 places, 266 transitions, 3906 flow [2024-06-28 00:53:53,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3528, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3906, PETRI_PLACES=241, PETRI_TRANSITIONS=266} [2024-06-28 00:53:53,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-28 00:53:53,759 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 266 transitions, 3906 flow [2024-06-28 00:53:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:53,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:53,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:53:53,759 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:53,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1902704781, now seen corresponding path program 9 times [2024-06-28 00:53:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:53,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274465877] [2024-06-28 00:53:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274465877] [2024-06-28 00:53:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274465877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:54,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:54,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661013240] [2024-06-28 00:53:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:54,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:54,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 266 transitions, 3906 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:54,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:54,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:54,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:55,273 INFO L124 PetriNetUnfolderBase]: 1189/2087 cut-off events. [2024-06-28 00:53:55,273 INFO L125 PetriNetUnfolderBase]: For 59051/59051 co-relation queries the response was YES. [2024-06-28 00:53:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15124 conditions, 2087 events. 1189/2087 cut-off events. For 59051/59051 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11060 event pairs, 221 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 15013. Up to 1697 conditions per place. [2024-06-28 00:53:55,291 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 207 selfloop transitions, 77 changer transitions 0/291 dead transitions. [2024-06-28 00:53:55,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 291 transitions, 4665 flow [2024-06-28 00:53:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:53:55,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-06-28 00:53:55,299 INFO L175 Difference]: Start difference. First operand has 241 places, 266 transitions, 3906 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:53:55,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 291 transitions, 4665 flow [2024-06-28 00:53:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 291 transitions, 4477 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:55,474 INFO L231 Difference]: Finished difference. Result has 244 places, 268 transitions, 3946 flow [2024-06-28 00:53:55,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3946, PETRI_PLACES=244, PETRI_TRANSITIONS=268} [2024-06-28 00:53:55,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 00:53:55,484 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 268 transitions, 3946 flow [2024-06-28 00:53:55,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:55,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:55,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:55,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:53:55,485 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:55,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -794484039, now seen corresponding path program 2 times [2024-06-28 00:53:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138882905] [2024-06-28 00:53:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:56,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138882905] [2024-06-28 00:53:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138882905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:56,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:56,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:56,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309867373] [2024-06-28 00:53:56,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:56,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:56,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:56,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 268 transitions, 3946 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:56,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:56,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:56,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:57,332 INFO L124 PetriNetUnfolderBase]: 1201/2113 cut-off events. [2024-06-28 00:53:57,333 INFO L125 PetriNetUnfolderBase]: For 59096/59099 co-relation queries the response was YES. [2024-06-28 00:53:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15280 conditions, 2113 events. 1201/2113 cut-off events. For 59096/59099 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11340 event pairs, 261 based on Foata normal form. 4/2014 useless extension candidates. Maximal degree in co-relation 15168. Up to 1805 conditions per place. [2024-06-28 00:53:57,352 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 238 selfloop transitions, 48 changer transitions 0/293 dead transitions. [2024-06-28 00:53:57,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 293 transitions, 4674 flow [2024-06-28 00:53:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:53:57,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894736842105263 [2024-06-28 00:53:57,353 INFO L175 Difference]: Start difference. First operand has 244 places, 268 transitions, 3946 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:53:57,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 293 transitions, 4674 flow [2024-06-28 00:53:57,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 293 transitions, 4486 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:57,512 INFO L231 Difference]: Finished difference. Result has 247 places, 270 transitions, 3906 flow [2024-06-28 00:53:57,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3758, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3906, PETRI_PLACES=247, PETRI_TRANSITIONS=270} [2024-06-28 00:53:57,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 00:53:57,513 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 270 transitions, 3906 flow [2024-06-28 00:53:57,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:57,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:57,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:57,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:53:57,513 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:57,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash -163247475, now seen corresponding path program 7 times [2024-06-28 00:53:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722064922] [2024-06-28 00:53:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:58,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:58,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722064922] [2024-06-28 00:53:58,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722064922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:58,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:58,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441300019] [2024-06-28 00:53:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:58,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:53:58,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 270 transitions, 3906 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:58,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:58,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:53:58,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:59,356 INFO L124 PetriNetUnfolderBase]: 1198/2100 cut-off events. [2024-06-28 00:53:59,356 INFO L125 PetriNetUnfolderBase]: For 56556/56556 co-relation queries the response was YES. [2024-06-28 00:53:59,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15046 conditions, 2100 events. 1198/2100 cut-off events. For 56556/56556 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11140 event pairs, 230 based on Foata normal form. 2/2000 useless extension candidates. Maximal degree in co-relation 14933. Up to 1744 conditions per place. [2024-06-28 00:53:59,376 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 214 selfloop transitions, 74 changer transitions 0/295 dead transitions. [2024-06-28 00:53:59,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 295 transitions, 4715 flow [2024-06-28 00:53:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:53:59,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-06-28 00:53:59,378 INFO L175 Difference]: Start difference. First operand has 247 places, 270 transitions, 3906 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:53:59,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 295 transitions, 4715 flow [2024-06-28 00:53:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 295 transitions, 4595 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:59,534 INFO L231 Difference]: Finished difference. Result has 248 places, 273 transitions, 4031 flow [2024-06-28 00:53:59,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3790, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4031, PETRI_PLACES=248, PETRI_TRANSITIONS=273} [2024-06-28 00:53:59,535 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-28 00:53:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 273 transitions, 4031 flow [2024-06-28 00:53:59,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:59,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:59,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:53:59,536 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -246607041, now seen corresponding path program 10 times [2024-06-28 00:53:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917406836] [2024-06-28 00:53:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:00,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:00,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917406836] [2024-06-28 00:54:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917406836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:00,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713266248] [2024-06-28 00:54:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:00,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:00,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 273 transitions, 4031 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:00,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:00,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:00,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:00,924 INFO L124 PetriNetUnfolderBase]: 1224/2141 cut-off events. [2024-06-28 00:54:00,925 INFO L125 PetriNetUnfolderBase]: For 61241/61244 co-relation queries the response was YES. [2024-06-28 00:54:00,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15594 conditions, 2141 events. 1224/2141 cut-off events. For 61241/61244 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11366 event pairs, 197 based on Foata normal form. 2/2037 useless extension candidates. Maximal degree in co-relation 15480. Up to 1543 conditions per place. [2024-06-28 00:54:00,944 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 184 selfloop transitions, 110 changer transitions 0/301 dead transitions. [2024-06-28 00:54:00,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 301 transitions, 4945 flow [2024-06-28 00:54:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:54:00,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-28 00:54:00,945 INFO L175 Difference]: Start difference. First operand has 248 places, 273 transitions, 4031 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:54:00,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 301 transitions, 4945 flow [2024-06-28 00:54:01,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 301 transitions, 4767 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:01,123 INFO L231 Difference]: Finished difference. Result has 252 places, 277 transitions, 4198 flow [2024-06-28 00:54:01,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4198, PETRI_PLACES=252, PETRI_TRANSITIONS=277} [2024-06-28 00:54:01,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 00:54:01,124 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 277 transitions, 4198 flow [2024-06-28 00:54:01,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:01,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:01,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:01,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:54:01,125 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:01,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash -501925699, now seen corresponding path program 11 times [2024-06-28 00:54:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:01,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345661169] [2024-06-28 00:54:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345661169] [2024-06-28 00:54:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345661169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141075377] [2024-06-28 00:54:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:02,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:02,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 277 transitions, 4198 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:02,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:02,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:02,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:02,554 INFO L124 PetriNetUnfolderBase]: 1235/2158 cut-off events. [2024-06-28 00:54:02,554 INFO L125 PetriNetUnfolderBase]: For 64147/64150 co-relation queries the response was YES. [2024-06-28 00:54:02,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15922 conditions, 2158 events. 1235/2158 cut-off events. For 64147/64150 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11490 event pairs, 235 based on Foata normal form. 2/2053 useless extension candidates. Maximal degree in co-relation 15806. Up to 1763 conditions per place. [2024-06-28 00:54:02,576 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 219 selfloop transitions, 76 changer transitions 0/302 dead transitions. [2024-06-28 00:54:02,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 302 transitions, 4987 flow [2024-06-28 00:54:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:54:02,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-06-28 00:54:02,577 INFO L175 Difference]: Start difference. First operand has 252 places, 277 transitions, 4198 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:54:02,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 302 transitions, 4987 flow [2024-06-28 00:54:02,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 302 transitions, 4786 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:02,837 INFO L231 Difference]: Finished difference. Result has 256 places, 279 transitions, 4220 flow [2024-06-28 00:54:02,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4220, PETRI_PLACES=256, PETRI_TRANSITIONS=279} [2024-06-28 00:54:02,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-28 00:54:02,837 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 279 transitions, 4220 flow [2024-06-28 00:54:02,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:02,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:02,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:54:02,838 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:02,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -494508949, now seen corresponding path program 12 times [2024-06-28 00:54:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936546723] [2024-06-28 00:54:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:02,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:03,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:03,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936546723] [2024-06-28 00:54:03,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936546723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:03,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:03,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217909603] [2024-06-28 00:54:03,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:03,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:03,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:03,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:03,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 279 transitions, 4220 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:03,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:03,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:04,228 INFO L124 PetriNetUnfolderBase]: 1268/2209 cut-off events. [2024-06-28 00:54:04,229 INFO L125 PetriNetUnfolderBase]: For 66676/66679 co-relation queries the response was YES. [2024-06-28 00:54:04,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16478 conditions, 2209 events. 1268/2209 cut-off events. For 66676/66679 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11801 event pairs, 234 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 16360. Up to 1817 conditions per place. [2024-06-28 00:54:04,250 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 222 selfloop transitions, 77 changer transitions 0/306 dead transitions. [2024-06-28 00:54:04,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 306 transitions, 5083 flow [2024-06-28 00:54:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:54:04,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-06-28 00:54:04,252 INFO L175 Difference]: Start difference. First operand has 256 places, 279 transitions, 4220 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:54:04,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 306 transitions, 5083 flow [2024-06-28 00:54:04,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 306 transitions, 4821 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:04,455 INFO L231 Difference]: Finished difference. Result has 260 places, 285 transitions, 4295 flow [2024-06-28 00:54:04,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4017, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4295, PETRI_PLACES=260, PETRI_TRANSITIONS=285} [2024-06-28 00:54:04,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:54:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 285 transitions, 4295 flow [2024-06-28 00:54:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:04,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:54:04,456 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -502127509, now seen corresponding path program 13 times [2024-06-28 00:54:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151580936] [2024-06-28 00:54:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:05,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151580936] [2024-06-28 00:54:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151580936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:05,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:05,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432116685] [2024-06-28 00:54:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:05,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:05,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:05,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:05,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 285 transitions, 4295 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:05,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:05,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:05,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:06,074 INFO L124 PetriNetUnfolderBase]: 1279/2226 cut-off events. [2024-06-28 00:54:06,074 INFO L125 PetriNetUnfolderBase]: For 68765/68768 co-relation queries the response was YES. [2024-06-28 00:54:06,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16560 conditions, 2226 events. 1279/2226 cut-off events. For 68765/68768 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11887 event pairs, 244 based on Foata normal form. 2/2117 useless extension candidates. Maximal degree in co-relation 16439. Up to 1861 conditions per place. [2024-06-28 00:54:06,096 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 228 selfloop transitions, 72 changer transitions 0/307 dead transitions. [2024-06-28 00:54:06,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 5082 flow [2024-06-28 00:54:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:54:06,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-06-28 00:54:06,098 INFO L175 Difference]: Start difference. First operand has 260 places, 285 transitions, 4295 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:54:06,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 5082 flow [2024-06-28 00:54:06,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 307 transitions, 4889 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:06,321 INFO L231 Difference]: Finished difference. Result has 265 places, 287 transitions, 4325 flow [2024-06-28 00:54:06,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4325, PETRI_PLACES=265, PETRI_TRANSITIONS=287} [2024-06-28 00:54:06,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 00:54:06,321 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 287 transitions, 4325 flow [2024-06-28 00:54:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:06,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:06,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:06,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:54:06,322 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:06,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash -246614481, now seen corresponding path program 14 times [2024-06-28 00:54:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172962365] [2024-06-28 00:54:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172962365] [2024-06-28 00:54:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172962365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:07,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663847280] [2024-06-28 00:54:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:07,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:07,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:07,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:07,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 287 transitions, 4325 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:07,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:07,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:07,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:07,762 INFO L124 PetriNetUnfolderBase]: 1290/2243 cut-off events. [2024-06-28 00:54:07,762 INFO L125 PetriNetUnfolderBase]: For 71155/71158 co-relation queries the response was YES. [2024-06-28 00:54:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16729 conditions, 2243 events. 1290/2243 cut-off events. For 71155/71158 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12009 event pairs, 217 based on Foata normal form. 2/2133 useless extension candidates. Maximal degree in co-relation 16607. Up to 1361 conditions per place. [2024-06-28 00:54:07,784 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 171 selfloop transitions, 136 changer transitions 0/314 dead transitions. [2024-06-28 00:54:07,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 314 transitions, 5395 flow [2024-06-28 00:54:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:54:07,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-28 00:54:07,785 INFO L175 Difference]: Start difference. First operand has 265 places, 287 transitions, 4325 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:54:07,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 314 transitions, 5395 flow [2024-06-28 00:54:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 314 transitions, 5150 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:08,006 INFO L231 Difference]: Finished difference. Result has 267 places, 291 transitions, 4509 flow [2024-06-28 00:54:08,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4509, PETRI_PLACES=267, PETRI_TRANSITIONS=291} [2024-06-28 00:54:08,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 00:54:08,008 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 291 transitions, 4509 flow [2024-06-28 00:54:08,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:08,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:08,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:08,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:54:08,009 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:08,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:08,009 INFO L85 PathProgramCache]: Analyzing trace with hash -246337651, now seen corresponding path program 3 times [2024-06-28 00:54:08,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:08,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760353651] [2024-06-28 00:54:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760353651] [2024-06-28 00:54:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760353651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:08,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:08,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:08,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264359772] [2024-06-28 00:54:08,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:08,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:08,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:09,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:09,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 291 transitions, 4509 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:09,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:09,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:09,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:09,707 INFO L124 PetriNetUnfolderBase]: 1302/2267 cut-off events. [2024-06-28 00:54:09,707 INFO L125 PetriNetUnfolderBase]: For 73969/73972 co-relation queries the response was YES. [2024-06-28 00:54:09,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 2267 events. 1302/2267 cut-off events. For 73969/73972 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12243 event pairs, 258 based on Foata normal form. 4/2156 useless extension candidates. Maximal degree in co-relation 16883. Up to 1956 conditions per place. [2024-06-28 00:54:09,732 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 260 selfloop transitions, 47 changer transitions 0/314 dead transitions. [2024-06-28 00:54:09,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 314 transitions, 5265 flow [2024-06-28 00:54:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:54:09,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894736842105263 [2024-06-28 00:54:09,733 INFO L175 Difference]: Start difference. First operand has 267 places, 291 transitions, 4509 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:54:09,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 314 transitions, 5265 flow [2024-06-28 00:54:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 314 transitions, 5162 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:09,940 INFO L231 Difference]: Finished difference. Result has 272 places, 293 transitions, 4549 flow [2024-06-28 00:54:09,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4406, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4549, PETRI_PLACES=272, PETRI_TRANSITIONS=293} [2024-06-28 00:54:09,941 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 00:54:09,941 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 293 transitions, 4549 flow [2024-06-28 00:54:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:09,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:09,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:09,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:54:09,942 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:09,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 67351659, now seen corresponding path program 15 times [2024-06-28 00:54:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198949463] [2024-06-28 00:54:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198949463] [2024-06-28 00:54:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198949463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:10,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:10,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375902765] [2024-06-28 00:54:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:10,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:10,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:10,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 293 transitions, 4549 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:10,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:10,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:10,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:11,359 INFO L124 PetriNetUnfolderBase]: 1298/2260 cut-off events. [2024-06-28 00:54:11,360 INFO L125 PetriNetUnfolderBase]: For 71322/71322 co-relation queries the response was YES. [2024-06-28 00:54:11,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16919 conditions, 2260 events. 1298/2260 cut-off events. For 71322/71322 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12200 event pairs, 448 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 16794. Up to 2093 conditions per place. [2024-06-28 00:54:11,382 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 287 selfloop transitions, 15 changer transitions 0/309 dead transitions. [2024-06-28 00:54:11,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 309 transitions, 5221 flow [2024-06-28 00:54:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:54:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742690058479532 [2024-06-28 00:54:11,384 INFO L175 Difference]: Start difference. First operand has 272 places, 293 transitions, 4549 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:54:11,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 309 transitions, 5221 flow [2024-06-28 00:54:11,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 309 transitions, 5052 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:11,613 INFO L231 Difference]: Finished difference. Result has 273 places, 293 transitions, 4415 flow [2024-06-28 00:54:11,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4415, PETRI_PLACES=273, PETRI_TRANSITIONS=293} [2024-06-28 00:54:11,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 00:54:11,614 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 293 transitions, 4415 flow [2024-06-28 00:54:11,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:11,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:11,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:11,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:54:11,615 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:11,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 67361579, now seen corresponding path program 4 times [2024-06-28 00:54:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:11,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149604925] [2024-06-28 00:54:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:11,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149604925] [2024-06-28 00:54:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149604925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338332657] [2024-06-28 00:54:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:12,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:12,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 293 transitions, 4415 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:12,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:12,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:12,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:13,114 INFO L124 PetriNetUnfolderBase]: 1310/2279 cut-off events. [2024-06-28 00:54:13,114 INFO L125 PetriNetUnfolderBase]: For 72206/72209 co-relation queries the response was YES. [2024-06-28 00:54:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16833 conditions, 2279 events. 1310/2279 cut-off events. For 72206/72209 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12332 event pairs, 249 based on Foata normal form. 4/2166 useless extension candidates. Maximal degree in co-relation 16707. Up to 1720 conditions per place. [2024-06-28 00:54:13,138 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 235 selfloop transitions, 76 changer transitions 0/318 dead transitions. [2024-06-28 00:54:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 318 transitions, 5309 flow [2024-06-28 00:54:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:54:13,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-28 00:54:13,139 INFO L175 Difference]: Start difference. First operand has 273 places, 293 transitions, 4415 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:54:13,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 318 transitions, 5309 flow [2024-06-28 00:54:13,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 318 transitions, 5270 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:13,383 INFO L231 Difference]: Finished difference. Result has 275 places, 295 transitions, 4577 flow [2024-06-28 00:54:13,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4376, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4577, PETRI_PLACES=275, PETRI_TRANSITIONS=295} [2024-06-28 00:54:13,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-28 00:54:13,384 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 295 transitions, 4577 flow [2024-06-28 00:54:13,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:13,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:13,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:54:13,384 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:13,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -494499029, now seen corresponding path program 5 times [2024-06-28 00:54:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994065937] [2024-06-28 00:54:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:14,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994065937] [2024-06-28 00:54:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994065937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:14,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:14,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:14,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117364391] [2024-06-28 00:54:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:14,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:14,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:14,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 295 transitions, 4577 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:14,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:14,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:14,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:15,266 INFO L124 PetriNetUnfolderBase]: 1314/2285 cut-off events. [2024-06-28 00:54:15,266 INFO L125 PetriNetUnfolderBase]: For 73400/73403 co-relation queries the response was YES. [2024-06-28 00:54:15,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17121 conditions, 2285 events. 1314/2285 cut-off events. For 73400/73403 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12368 event pairs, 287 based on Foata normal form. 4/2171 useless extension candidates. Maximal degree in co-relation 16994. Up to 2027 conditions per place. [2024-06-28 00:54:15,292 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 274 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2024-06-28 00:54:15,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 317 transitions, 5349 flow [2024-06-28 00:54:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 00:54:15,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38421052631578945 [2024-06-28 00:54:15,293 INFO L175 Difference]: Start difference. First operand has 275 places, 295 transitions, 4577 flow. Second operand 10 states and 146 transitions. [2024-06-28 00:54:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 317 transitions, 5349 flow [2024-06-28 00:54:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 317 transitions, 5165 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:15,563 INFO L231 Difference]: Finished difference. Result has 277 places, 297 transitions, 4522 flow [2024-06-28 00:54:15,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4522, PETRI_PLACES=277, PETRI_TRANSITIONS=297} [2024-06-28 00:54:15,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 00:54:15,563 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 297 transitions, 4522 flow [2024-06-28 00:54:15,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:15,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:15,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:15,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:54:15,564 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:15,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash -448949005, now seen corresponding path program 6 times [2024-06-28 00:54:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341795165] [2024-06-28 00:54:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:15,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341795165] [2024-06-28 00:54:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341795165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:16,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:16,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369584325] [2024-06-28 00:54:16,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:16,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:16,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 297 transitions, 4522 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:16,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:16,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:16,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:17,287 INFO L124 PetriNetUnfolderBase]: 1310/2278 cut-off events. [2024-06-28 00:54:17,287 INFO L125 PetriNetUnfolderBase]: For 70809/70809 co-relation queries the response was YES. [2024-06-28 00:54:17,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16786 conditions, 2278 events. 1310/2278 cut-off events. For 70809/70809 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12323 event pairs, 453 based on Foata normal form. 2/2172 useless extension candidates. Maximal degree in co-relation 16658. Up to 2088 conditions per place. [2024-06-28 00:54:17,312 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 288 selfloop transitions, 20 changer transitions 0/315 dead transitions. [2024-06-28 00:54:17,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 315 transitions, 5216 flow [2024-06-28 00:54:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:54:17,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736842105263158 [2024-06-28 00:54:17,313 INFO L175 Difference]: Start difference. First operand has 277 places, 297 transitions, 4522 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:54:17,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 315 transitions, 5216 flow [2024-06-28 00:54:17,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 315 transitions, 5111 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:17,587 INFO L231 Difference]: Finished difference. Result has 279 places, 297 transitions, 4465 flow [2024-06-28 00:54:17,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4465, PETRI_PLACES=279, PETRI_TRANSITIONS=297} [2024-06-28 00:54:17,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-28 00:54:17,588 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 297 transitions, 4465 flow [2024-06-28 00:54:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:17,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:17,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:54:17,589 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:17,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1884266623, now seen corresponding path program 16 times [2024-06-28 00:54:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426195895] [2024-06-28 00:54:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426195895] [2024-06-28 00:54:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426195895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:18,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:18,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758592814] [2024-06-28 00:54:18,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:18,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:18,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 297 transitions, 4465 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:18,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:18,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:18,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:19,135 INFO L124 PetriNetUnfolderBase]: 1306/2267 cut-off events. [2024-06-28 00:54:19,135 INFO L125 PetriNetUnfolderBase]: For 68119/68122 co-relation queries the response was YES. [2024-06-28 00:54:19,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16540 conditions, 2267 events. 1306/2267 cut-off events. For 68119/68122 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12145 event pairs, 238 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 16411. Up to 1801 conditions per place. [2024-06-28 00:54:19,160 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 226 selfloop transitions, 88 changer transitions 0/321 dead transitions. [2024-06-28 00:54:19,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 321 transitions, 5238 flow [2024-06-28 00:54:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:54:19,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:54:19,161 INFO L175 Difference]: Start difference. First operand has 279 places, 297 transitions, 4465 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:54:19,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 321 transitions, 5238 flow [2024-06-28 00:54:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 321 transitions, 5198 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:19,411 INFO L231 Difference]: Finished difference. Result has 279 places, 297 transitions, 4609 flow [2024-06-28 00:54:19,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4609, PETRI_PLACES=279, PETRI_TRANSITIONS=297} [2024-06-28 00:54:19,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-28 00:54:19,412 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 297 transitions, 4609 flow [2024-06-28 00:54:19,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:19,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:19,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:54:19,413 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:19,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1029270454, now seen corresponding path program 3 times [2024-06-28 00:54:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:19,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724217641] [2024-06-28 00:54:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724217641] [2024-06-28 00:54:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724217641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920006629] [2024-06-28 00:54:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:20,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:20,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 297 transitions, 4609 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:20,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:20,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:20,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:21,473 INFO L124 PetriNetUnfolderBase]: 1304/2270 cut-off events. [2024-06-28 00:54:21,473 INFO L125 PetriNetUnfolderBase]: For 68648/68651 co-relation queries the response was YES. [2024-06-28 00:54:21,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16750 conditions, 2270 events. 1304/2270 cut-off events. For 68648/68651 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12292 event pairs, 285 based on Foata normal form. 3/2155 useless extension candidates. Maximal degree in co-relation 16620. Up to 2009 conditions per place. [2024-06-28 00:54:21,498 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 272 selfloop transitions, 38 changer transitions 0/317 dead transitions. [2024-06-28 00:54:21,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 317 transitions, 5376 flow [2024-06-28 00:54:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 00:54:21,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391812865497076 [2024-06-28 00:54:21,499 INFO L175 Difference]: Start difference. First operand has 279 places, 297 transitions, 4609 flow. Second operand 9 states and 134 transitions. [2024-06-28 00:54:21,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 317 transitions, 5376 flow [2024-06-28 00:54:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 317 transitions, 4911 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 00:54:21,795 INFO L231 Difference]: Finished difference. Result has 278 places, 299 transitions, 4276 flow [2024-06-28 00:54:21,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4276, PETRI_PLACES=278, PETRI_TRANSITIONS=299} [2024-06-28 00:54:21,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 00:54:21,796 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 299 transitions, 4276 flow [2024-06-28 00:54:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:21,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:21,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:21,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:54:21,796 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:21,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 64915565, now seen corresponding path program 1 times [2024-06-28 00:54:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208372291] [2024-06-28 00:54:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208372291] [2024-06-28 00:54:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208372291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:22,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367654309] [2024-06-28 00:54:22,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:22,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:22,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 299 transitions, 4276 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:22,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:22,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:22,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:23,585 INFO L124 PetriNetUnfolderBase]: 1320/2291 cut-off events. [2024-06-28 00:54:23,585 INFO L125 PetriNetUnfolderBase]: For 68767/68767 co-relation queries the response was YES. [2024-06-28 00:54:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16082 conditions, 2291 events. 1320/2291 cut-off events. For 68767/68767 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12307 event pairs, 250 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 15953. Up to 2016 conditions per place. [2024-06-28 00:54:23,609 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 271 selfloop transitions, 47 changer transitions 0/325 dead transitions. [2024-06-28 00:54:23,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 325 transitions, 5082 flow [2024-06-28 00:54:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:54:23,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:54:23,610 INFO L175 Difference]: Start difference. First operand has 278 places, 299 transitions, 4276 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:54:23,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 325 transitions, 5082 flow [2024-06-28 00:54:23,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 325 transitions, 4980 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:23,890 INFO L231 Difference]: Finished difference. Result has 281 places, 301 transitions, 4350 flow [2024-06-28 00:54:23,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4350, PETRI_PLACES=281, PETRI_TRANSITIONS=301} [2024-06-28 00:54:23,891 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-28 00:54:23,891 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 301 transitions, 4350 flow [2024-06-28 00:54:23,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:23,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:23,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:23,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:54:23,892 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:23,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1728654729, now seen corresponding path program 2 times [2024-06-28 00:54:23,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:23,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782263715] [2024-06-28 00:54:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:23,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782263715] [2024-06-28 00:54:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782263715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:24,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:24,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833187329] [2024-06-28 00:54:24,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:24,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:24,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:24,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 301 transitions, 4350 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:24,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:24,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:24,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:25,660 INFO L124 PetriNetUnfolderBase]: 1377/2408 cut-off events. [2024-06-28 00:54:25,661 INFO L125 PetriNetUnfolderBase]: For 73807/73807 co-relation queries the response was YES. [2024-06-28 00:54:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16731 conditions, 2408 events. 1377/2408 cut-off events. For 73807/73807 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13327 event pairs, 276 based on Foata normal form. 2/2297 useless extension candidates. Maximal degree in co-relation 16601. Up to 2027 conditions per place. [2024-06-28 00:54:25,686 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 276 selfloop transitions, 61 changer transitions 0/344 dead transitions. [2024-06-28 00:54:25,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 344 transitions, 5299 flow [2024-06-28 00:54:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:54:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:54:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 00:54:25,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-06-28 00:54:25,688 INFO L175 Difference]: Start difference. First operand has 281 places, 301 transitions, 4350 flow. Second operand 12 states and 183 transitions. [2024-06-28 00:54:25,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 344 transitions, 5299 flow [2024-06-28 00:54:25,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 344 transitions, 5145 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:25,957 INFO L231 Difference]: Finished difference. Result has 287 places, 311 transitions, 4505 flow [2024-06-28 00:54:25,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4505, PETRI_PLACES=287, PETRI_TRANSITIONS=311} [2024-06-28 00:54:25,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:54:25,957 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 311 transitions, 4505 flow [2024-06-28 00:54:25,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:25,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:25,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:25,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:54:25,958 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:25,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash -895578399, now seen corresponding path program 3 times [2024-06-28 00:54:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167102359] [2024-06-28 00:54:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167102359] [2024-06-28 00:54:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167102359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:26,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454962040] [2024-06-28 00:54:26,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:26,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:26,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:26,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 311 transitions, 4505 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:26,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:26,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:26,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:27,587 INFO L124 PetriNetUnfolderBase]: 1403/2455 cut-off events. [2024-06-28 00:54:27,587 INFO L125 PetriNetUnfolderBase]: For 76533/76533 co-relation queries the response was YES. [2024-06-28 00:54:27,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17272 conditions, 2455 events. 1403/2455 cut-off events. For 76533/76533 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13625 event pairs, 320 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 17139. Up to 2129 conditions per place. [2024-06-28 00:54:27,615 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 272 selfloop transitions, 63 changer transitions 0/342 dead transitions. [2024-06-28 00:54:27,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 342 transitions, 5375 flow [2024-06-28 00:54:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:54:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:54:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 00:54:27,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3881578947368421 [2024-06-28 00:54:27,616 INFO L175 Difference]: Start difference. First operand has 287 places, 311 transitions, 4505 flow. Second operand 12 states and 177 transitions. [2024-06-28 00:54:27,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 342 transitions, 5375 flow [2024-06-28 00:54:27,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 342 transitions, 5189 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:27,911 INFO L231 Difference]: Finished difference. Result has 291 places, 315 transitions, 4549 flow [2024-06-28 00:54:27,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4549, PETRI_PLACES=291, PETRI_TRANSITIONS=315} [2024-06-28 00:54:27,912 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 00:54:27,912 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 315 transitions, 4549 flow [2024-06-28 00:54:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:54:27,913 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:27,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash -895727199, now seen corresponding path program 4 times [2024-06-28 00:54:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868183026] [2024-06-28 00:54:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868183026] [2024-06-28 00:54:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868183026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:28,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856260503] [2024-06-28 00:54:28,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:28,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:28,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:28,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 315 transitions, 4549 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:28,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:28,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:28,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:29,591 INFO L124 PetriNetUnfolderBase]: 1430/2497 cut-off events. [2024-06-28 00:54:29,591 INFO L125 PetriNetUnfolderBase]: For 80272/80272 co-relation queries the response was YES. [2024-06-28 00:54:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17657 conditions, 2497 events. 1430/2497 cut-off events. For 80272/80272 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13912 event pairs, 278 based on Foata normal form. 2/2381 useless extension candidates. Maximal degree in co-relation 17523. Up to 2038 conditions per place. [2024-06-28 00:54:29,619 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 261 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2024-06-28 00:54:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 351 transitions, 5609 flow [2024-06-28 00:54:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:54:29,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-06-28 00:54:29,620 INFO L175 Difference]: Start difference. First operand has 291 places, 315 transitions, 4549 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:54:29,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 351 transitions, 5609 flow [2024-06-28 00:54:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 351 transitions, 5381 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-28 00:54:29,951 INFO L231 Difference]: Finished difference. Result has 290 places, 327 transitions, 4774 flow [2024-06-28 00:54:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4323, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4774, PETRI_PLACES=290, PETRI_TRANSITIONS=327} [2024-06-28 00:54:29,952 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 00:54:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 327 transitions, 4774 flow [2024-06-28 00:54:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:54:29,952 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:29,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1979652967, now seen corresponding path program 1 times [2024-06-28 00:54:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426463650] [2024-06-28 00:54:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:31,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:31,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426463650] [2024-06-28 00:54:31,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426463650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:31,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:31,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247607840] [2024-06-28 00:54:31,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:31,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:31,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:31,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:31,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 327 transitions, 4774 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:32,040 INFO L124 PetriNetUnfolderBase]: 1441/2520 cut-off events. [2024-06-28 00:54:32,040 INFO L125 PetriNetUnfolderBase]: For 83177/83177 co-relation queries the response was YES. [2024-06-28 00:54:32,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17881 conditions, 2520 events. 1441/2520 cut-off events. For 83177/83177 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14095 event pairs, 331 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 17745. Up to 2219 conditions per place. [2024-06-28 00:54:32,068 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 297 selfloop transitions, 53 changer transitions 0/357 dead transitions. [2024-06-28 00:54:32,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 357 transitions, 5646 flow [2024-06-28 00:54:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:54:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:54:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 188 transitions. [2024-06-28 00:54:32,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805668016194332 [2024-06-28 00:54:32,071 INFO L175 Difference]: Start difference. First operand has 290 places, 327 transitions, 4774 flow. Second operand 13 states and 188 transitions. [2024-06-28 00:54:32,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 357 transitions, 5646 flow [2024-06-28 00:54:32,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 357 transitions, 5469 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:32,388 INFO L231 Difference]: Finished difference. Result has 299 places, 329 transitions, 4773 flow [2024-06-28 00:54:32,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4773, PETRI_PLACES=299, PETRI_TRANSITIONS=329} [2024-06-28 00:54:32,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 00:54:32,388 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 329 transitions, 4773 flow [2024-06-28 00:54:32,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:32,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:32,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:32,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:54:32,389 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:32,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 743711447, now seen corresponding path program 5 times [2024-06-28 00:54:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472591458] [2024-06-28 00:54:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:32,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472591458] [2024-06-28 00:54:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472591458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:33,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336063402] [2024-06-28 00:54:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 00:54:33,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 329 transitions, 4773 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:33,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:33,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 00:54:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:33,959 INFO L124 PetriNetUnfolderBase]: 1510/2659 cut-off events. [2024-06-28 00:54:33,960 INFO L125 PetriNetUnfolderBase]: For 85017/85028 co-relation queries the response was YES. [2024-06-28 00:54:33,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18456 conditions, 2659 events. 1510/2659 cut-off events. For 85017/85028 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15297 event pairs, 210 based on Foata normal form. 10/2554 useless extension candidates. Maximal degree in co-relation 18319. Up to 2041 conditions per place. [2024-06-28 00:54:33,991 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 281 selfloop transitions, 82 changer transitions 0/379 dead transitions. [2024-06-28 00:54:33,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 379 transitions, 5889 flow [2024-06-28 00:54:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 00:54:33,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-28 00:54:33,993 INFO L175 Difference]: Start difference. First operand has 299 places, 329 transitions, 4773 flow. Second operand 10 states and 166 transitions. [2024-06-28 00:54:33,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 379 transitions, 5889 flow [2024-06-28 00:54:34,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 379 transitions, 5729 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 00:54:34,353 INFO L231 Difference]: Finished difference. Result has 302 places, 350 transitions, 5135 flow [2024-06-28 00:54:34,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5135, PETRI_PLACES=302, PETRI_TRANSITIONS=350} [2024-06-28 00:54:34,354 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-28 00:54:34,354 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 350 transitions, 5135 flow [2024-06-28 00:54:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:34,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:34,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:54:34,354 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:34,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1060119227, now seen corresponding path program 6 times [2024-06-28 00:54:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:34,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192245661] [2024-06-28 00:54:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:35,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:35,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192245661] [2024-06-28 00:54:35,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192245661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:35,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:35,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:35,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322516051] [2024-06-28 00:54:35,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:35,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:35,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 350 transitions, 5135 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:35,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:35,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:36,142 INFO L124 PetriNetUnfolderBase]: 1626/2853 cut-off events. [2024-06-28 00:54:36,142 INFO L125 PetriNetUnfolderBase]: For 93804/93804 co-relation queries the response was YES. [2024-06-28 00:54:36,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20207 conditions, 2853 events. 1626/2853 cut-off events. For 93804/93804 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16754 event pairs, 312 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 20066. Up to 2430 conditions per place. [2024-06-28 00:54:36,175 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 332 selfloop transitions, 64 changer transitions 0/403 dead transitions. [2024-06-28 00:54:36,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 403 transitions, 6466 flow [2024-06-28 00:54:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:54:36,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 00:54:36,177 INFO L175 Difference]: Start difference. First operand has 302 places, 350 transitions, 5135 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:54:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 403 transitions, 6466 flow [2024-06-28 00:54:36,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 403 transitions, 6154 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:36,584 INFO L231 Difference]: Finished difference. Result has 309 places, 373 transitions, 5448 flow [2024-06-28 00:54:36,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5448, PETRI_PLACES=309, PETRI_TRANSITIONS=373} [2024-06-28 00:54:36,584 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-28 00:54:36,585 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 373 transitions, 5448 flow [2024-06-28 00:54:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:36,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:36,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:36,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:54:36,586 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:36,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1452692185, now seen corresponding path program 1 times [2024-06-28 00:54:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:36,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207150165] [2024-06-28 00:54:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207150165] [2024-06-28 00:54:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207150165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:37,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129345218] [2024-06-28 00:54:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:37,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:37,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:37,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 373 transitions, 5448 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:37,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:37,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:37,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:38,529 INFO L124 PetriNetUnfolderBase]: 1632/2870 cut-off events. [2024-06-28 00:54:38,529 INFO L125 PetriNetUnfolderBase]: For 93527/93527 co-relation queries the response was YES. [2024-06-28 00:54:38,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20330 conditions, 2870 events. 1632/2870 cut-off events. For 93527/93527 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16902 event pairs, 385 based on Foata normal form. 1/2750 useless extension candidates. Maximal degree in co-relation 20187. Up to 2532 conditions per place. [2024-06-28 00:54:38,564 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 328 selfloop transitions, 65 changer transitions 0/400 dead transitions. [2024-06-28 00:54:38,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 400 transitions, 6392 flow [2024-06-28 00:54:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:54:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:54:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 00:54:38,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38377192982456143 [2024-06-28 00:54:38,566 INFO L175 Difference]: Start difference. First operand has 309 places, 373 transitions, 5448 flow. Second operand 12 states and 175 transitions. [2024-06-28 00:54:38,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 400 transitions, 6392 flow [2024-06-28 00:54:39,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 400 transitions, 6225 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:39,040 INFO L231 Difference]: Finished difference. Result has 315 places, 375 transitions, 5495 flow [2024-06-28 00:54:39,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5293, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5495, PETRI_PLACES=315, PETRI_TRANSITIONS=375} [2024-06-28 00:54:39,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-28 00:54:39,041 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 375 transitions, 5495 flow [2024-06-28 00:54:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:39,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:39,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:54:39,041 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:39,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash -74686881, now seen corresponding path program 2 times [2024-06-28 00:54:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771573236] [2024-06-28 00:54:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771573236] [2024-06-28 00:54:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771573236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:39,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:39,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:39,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334366894] [2024-06-28 00:54:39,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:39,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:39,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:39,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:39,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 375 transitions, 5495 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:39,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:39,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:39,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:40,836 INFO L124 PetriNetUnfolderBase]: 1632/2862 cut-off events. [2024-06-28 00:54:40,836 INFO L125 PetriNetUnfolderBase]: For 90037/90037 co-relation queries the response was YES. [2024-06-28 00:54:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20081 conditions, 2862 events. 1632/2862 cut-off events. For 90037/90037 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16762 event pairs, 350 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 19936. Up to 2560 conditions per place. [2024-06-28 00:54:40,873 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 339 selfloop transitions, 53 changer transitions 0/399 dead transitions. [2024-06-28 00:54:40,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 399 transitions, 6419 flow [2024-06-28 00:54:40,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:54:40,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-28 00:54:40,875 INFO L175 Difference]: Start difference. First operand has 315 places, 375 transitions, 5495 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:54:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 399 transitions, 6419 flow [2024-06-28 00:54:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 399 transitions, 6227 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:41,376 INFO L231 Difference]: Finished difference. Result has 316 places, 377 transitions, 5489 flow [2024-06-28 00:54:41,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5489, PETRI_PLACES=316, PETRI_TRANSITIONS=377} [2024-06-28 00:54:41,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 00:54:41,377 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 377 transitions, 5489 flow [2024-06-28 00:54:41,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:41,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:41,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:41,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:54:41,378 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:41,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1758613313, now seen corresponding path program 2 times [2024-06-28 00:54:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174190347] [2024-06-28 00:54:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174190347] [2024-06-28 00:54:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174190347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81217864] [2024-06-28 00:54:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:42,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:42,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:42,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 377 transitions, 5489 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:42,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:42,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:42,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:43,401 INFO L124 PetriNetUnfolderBase]: 1646/2884 cut-off events. [2024-06-28 00:54:43,401 INFO L125 PetriNetUnfolderBase]: For 94433/94433 co-relation queries the response was YES. [2024-06-28 00:54:43,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20188 conditions, 2884 events. 1646/2884 cut-off events. For 94433/94433 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 16954 event pairs, 350 based on Foata normal form. 2/2758 useless extension candidates. Maximal degree in co-relation 20042. Up to 2586 conditions per place. [2024-06-28 00:54:43,436 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 353 selfloop transitions, 46 changer transitions 0/406 dead transitions. [2024-06-28 00:54:43,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 406 transitions, 6453 flow [2024-06-28 00:54:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:54:43,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-06-28 00:54:43,437 INFO L175 Difference]: Start difference. First operand has 316 places, 377 transitions, 5489 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:54:43,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 406 transitions, 6453 flow [2024-06-28 00:54:43,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 406 transitions, 6317 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:43,900 INFO L231 Difference]: Finished difference. Result has 318 places, 381 transitions, 5537 flow [2024-06-28 00:54:43,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5537, PETRI_PLACES=318, PETRI_TRANSITIONS=381} [2024-06-28 00:54:43,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-28 00:54:43,900 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 381 transitions, 5537 flow [2024-06-28 00:54:43,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:43,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:43,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:54:43,901 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:43,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1425428273, now seen corresponding path program 3 times [2024-06-28 00:54:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032940903] [2024-06-28 00:54:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:45,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:45,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032940903] [2024-06-28 00:54:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032940903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:45,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:45,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406565520] [2024-06-28 00:54:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:45,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:45,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:45,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 381 transitions, 5537 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:45,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:45,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:45,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:46,523 INFO L124 PetriNetUnfolderBase]: 1657/2902 cut-off events. [2024-06-28 00:54:46,523 INFO L125 PetriNetUnfolderBase]: For 97697/97697 co-relation queries the response was YES. [2024-06-28 00:54:46,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20402 conditions, 2902 events. 1657/2902 cut-off events. For 97697/97697 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17057 event pairs, 324 based on Foata normal form. 2/2775 useless extension candidates. Maximal degree in co-relation 20255. Up to 2328 conditions per place. [2024-06-28 00:54:46,562 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 285 selfloop transitions, 120 changer transitions 0/412 dead transitions. [2024-06-28 00:54:46,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 412 transitions, 6533 flow [2024-06-28 00:54:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 00:54:46,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-06-28 00:54:46,563 INFO L175 Difference]: Start difference. First operand has 318 places, 381 transitions, 5537 flow. Second operand 11 states and 174 transitions. [2024-06-28 00:54:46,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 412 transitions, 6533 flow [2024-06-28 00:54:47,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 412 transitions, 6390 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 00:54:47,149 INFO L231 Difference]: Finished difference. Result has 319 places, 383 transitions, 5711 flow [2024-06-28 00:54:47,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5711, PETRI_PLACES=319, PETRI_TRANSITIONS=383} [2024-06-28 00:54:47,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 00:54:47,149 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 383 transitions, 5711 flow [2024-06-28 00:54:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:47,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:47,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:47,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:54:47,154 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:47,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1425419593, now seen corresponding path program 1 times [2024-06-28 00:54:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310522820] [2024-06-28 00:54:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310522820] [2024-06-28 00:54:48,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310522820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:48,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796261253] [2024-06-28 00:54:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:48,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:48,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:48,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 383 transitions, 5711 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:48,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:48,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:49,895 INFO L124 PetriNetUnfolderBase]: 1663/2915 cut-off events. [2024-06-28 00:54:49,895 INFO L125 PetriNetUnfolderBase]: For 96210/96210 co-relation queries the response was YES. [2024-06-28 00:54:49,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20679 conditions, 2915 events. 1663/2915 cut-off events. For 96210/96210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17216 event pairs, 474 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 20532. Up to 2602 conditions per place. [2024-06-28 00:54:49,932 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 349 selfloop transitions, 53 changer transitions 0/409 dead transitions. [2024-06-28 00:54:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 409 transitions, 6671 flow [2024-06-28 00:54:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:54:49,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-06-28 00:54:49,948 INFO L175 Difference]: Start difference. First operand has 319 places, 383 transitions, 5711 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:54:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 409 transitions, 6671 flow [2024-06-28 00:54:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 409 transitions, 6439 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:50,520 INFO L231 Difference]: Finished difference. Result has 323 places, 385 transitions, 5647 flow [2024-06-28 00:54:50,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5479, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5647, PETRI_PLACES=323, PETRI_TRANSITIONS=385} [2024-06-28 00:54:50,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-28 00:54:50,520 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 385 transitions, 5647 flow [2024-06-28 00:54:50,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:50,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:50,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:50,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:54:50,521 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1425665857, now seen corresponding path program 7 times [2024-06-28 00:54:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485292330] [2024-06-28 00:54:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485292330] [2024-06-28 00:54:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485292330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:51,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135495312] [2024-06-28 00:54:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:51,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:51,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 385 transitions, 5647 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:51,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:51,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:52,307 INFO L124 PetriNetUnfolderBase]: 1679/2940 cut-off events. [2024-06-28 00:54:52,307 INFO L125 PetriNetUnfolderBase]: For 101144/101144 co-relation queries the response was YES. [2024-06-28 00:54:52,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20719 conditions, 2940 events. 1679/2940 cut-off events. For 101144/101144 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17355 event pairs, 328 based on Foata normal form. 2/2812 useless extension candidates. Maximal degree in co-relation 20571. Up to 2457 conditions per place. [2024-06-28 00:54:52,344 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 307 selfloop transitions, 100 changer transitions 0/414 dead transitions. [2024-06-28 00:54:52,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 414 transitions, 6679 flow [2024-06-28 00:54:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:54:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 00:54:52,345 INFO L175 Difference]: Start difference. First operand has 323 places, 385 transitions, 5647 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:54:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 414 transitions, 6679 flow [2024-06-28 00:54:52,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 414 transitions, 6549 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:52,865 INFO L231 Difference]: Finished difference. Result has 324 places, 387 transitions, 5820 flow [2024-06-28 00:54:52,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5820, PETRI_PLACES=324, PETRI_TRANSITIONS=387} [2024-06-28 00:54:52,866 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-28 00:54:52,866 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 387 transitions, 5820 flow [2024-06-28 00:54:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:52,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:52,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:54:52,866 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:52,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1425658913, now seen corresponding path program 4 times [2024-06-28 00:54:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149633613] [2024-06-28 00:54:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:54,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:54,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149633613] [2024-06-28 00:54:54,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149633613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:54,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:54,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:54,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943612618] [2024-06-28 00:54:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:54,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:54,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:54,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:54,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:54,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 387 transitions, 5820 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:54,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:54,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:54,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:54,936 INFO L124 PetriNetUnfolderBase]: 1690/2957 cut-off events. [2024-06-28 00:54:54,936 INFO L125 PetriNetUnfolderBase]: For 106005/106005 co-relation queries the response was YES. [2024-06-28 00:54:54,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21118 conditions, 2957 events. 1690/2957 cut-off events. For 106005/106005 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17457 event pairs, 328 based on Foata normal form. 2/2827 useless extension candidates. Maximal degree in co-relation 20969. Up to 2466 conditions per place. [2024-06-28 00:54:54,971 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 308 selfloop transitions, 102 changer transitions 0/417 dead transitions. [2024-06-28 00:54:54,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 417 transitions, 6822 flow [2024-06-28 00:54:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:54:54,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 00:54:54,973 INFO L175 Difference]: Start difference. First operand has 324 places, 387 transitions, 5820 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:54:54,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 417 transitions, 6822 flow [2024-06-28 00:54:55,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 417 transitions, 6535 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:55,538 INFO L231 Difference]: Finished difference. Result has 327 places, 389 transitions, 5818 flow [2024-06-28 00:54:55,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5533, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5818, PETRI_PLACES=327, PETRI_TRANSITIONS=389} [2024-06-28 00:54:55,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-28 00:54:55,539 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 389 transitions, 5818 flow [2024-06-28 00:54:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:55,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:55,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:55,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:54:55,540 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:55,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1432094947, now seen corresponding path program 8 times [2024-06-28 00:54:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:55,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255664217] [2024-06-28 00:54:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255664217] [2024-06-28 00:54:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255664217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:56,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649114722] [2024-06-28 00:54:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:56,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:56,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:56,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 389 transitions, 5818 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:56,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:56,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:56,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:57,241 INFO L124 PetriNetUnfolderBase]: 1706/2985 cut-off events. [2024-06-28 00:54:57,241 INFO L125 PetriNetUnfolderBase]: For 108387/108387 co-relation queries the response was YES. [2024-06-28 00:54:57,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21299 conditions, 2985 events. 1706/2985 cut-off events. For 108387/108387 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17631 event pairs, 351 based on Foata normal form. 2/2856 useless extension candidates. Maximal degree in co-relation 21149. Up to 2576 conditions per place. [2024-06-28 00:54:57,279 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 325 selfloop transitions, 84 changer transitions 0/416 dead transitions. [2024-06-28 00:54:57,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 416 transitions, 6846 flow [2024-06-28 00:54:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:54:57,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 00:54:57,280 INFO L175 Difference]: Start difference. First operand has 327 places, 389 transitions, 5818 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:54:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 416 transitions, 6846 flow [2024-06-28 00:54:57,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 416 transitions, 6581 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:57,845 INFO L231 Difference]: Finished difference. Result has 328 places, 391 transitions, 5828 flow [2024-06-28 00:54:57,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5828, PETRI_PLACES=328, PETRI_TRANSITIONS=391} [2024-06-28 00:54:57,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-28 00:54:57,846 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 391 transitions, 5828 flow [2024-06-28 00:54:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:57,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:57,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:57,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:54:57,847 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1431915023, now seen corresponding path program 5 times [2024-06-28 00:54:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978653955] [2024-06-28 00:54:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:58,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978653955] [2024-06-28 00:54:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978653955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349054384] [2024-06-28 00:54:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:58,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:58,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:58,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:54:58,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 391 transitions, 5828 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:58,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:58,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:54:58,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:59,903 INFO L124 PetriNetUnfolderBase]: 1717/3002 cut-off events. [2024-06-28 00:54:59,903 INFO L125 PetriNetUnfolderBase]: For 111349/111349 co-relation queries the response was YES. [2024-06-28 00:54:59,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21377 conditions, 3002 events. 1717/3002 cut-off events. For 111349/111349 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17747 event pairs, 351 based on Foata normal form. 2/2871 useless extension candidates. Maximal degree in co-relation 21226. Up to 2585 conditions per place. [2024-06-28 00:54:59,941 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 326 selfloop transitions, 86 changer transitions 0/419 dead transitions. [2024-06-28 00:54:59,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 419 transitions, 6826 flow [2024-06-28 00:54:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:54:59,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-06-28 00:54:59,943 INFO L175 Difference]: Start difference. First operand has 328 places, 391 transitions, 5828 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:54:59,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 419 transitions, 6826 flow [2024-06-28 00:55:00,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 419 transitions, 6538 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:00,610 INFO L231 Difference]: Finished difference. Result has 330 places, 393 transitions, 5797 flow [2024-06-28 00:55:00,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5540, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5797, PETRI_PLACES=330, PETRI_TRANSITIONS=393} [2024-06-28 00:55:00,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 00:55:00,611 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 393 transitions, 5797 flow [2024-06-28 00:55:00,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:00,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:00,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:00,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:55:00,612 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:00,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1432099597, now seen corresponding path program 9 times [2024-06-28 00:55:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33503785] [2024-06-28 00:55:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33503785] [2024-06-28 00:55:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33503785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734567577] [2024-06-28 00:55:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 393 transitions, 5797 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:02,572 INFO L124 PetriNetUnfolderBase]: 1733/3031 cut-off events. [2024-06-28 00:55:02,572 INFO L125 PetriNetUnfolderBase]: For 113353/113353 co-relation queries the response was YES. [2024-06-28 00:55:02,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21551 conditions, 3031 events. 1733/3031 cut-off events. For 113353/113353 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17991 event pairs, 344 based on Foata normal form. 2/2900 useless extension candidates. Maximal degree in co-relation 21399. Up to 2613 conditions per place. [2024-06-28 00:55:02,608 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 332 selfloop transitions, 84 changer transitions 0/423 dead transitions. [2024-06-28 00:55:02,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 423 transitions, 6875 flow [2024-06-28 00:55:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:55:02,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:55:02,610 INFO L175 Difference]: Start difference. First operand has 330 places, 393 transitions, 5797 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:55:02,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 423 transitions, 6875 flow [2024-06-28 00:55:03,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 423 transitions, 6638 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:03,193 INFO L231 Difference]: Finished difference. Result has 332 places, 397 transitions, 5874 flow [2024-06-28 00:55:03,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5560, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5874, PETRI_PLACES=332, PETRI_TRANSITIONS=397} [2024-06-28 00:55:03,194 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-28 00:55:03,194 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 397 transitions, 5874 flow [2024-06-28 00:55:03,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:03,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:03,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:55:03,195 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:03,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1425419903, now seen corresponding path program 6 times [2024-06-28 00:55:03,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:03,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043472624] [2024-06-28 00:55:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:03,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043472624] [2024-06-28 00:55:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043472624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732535769] [2024-06-28 00:55:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:04,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:04,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 397 transitions, 5874 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:04,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:04,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:04,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:05,272 INFO L124 PetriNetUnfolderBase]: 1752/3060 cut-off events. [2024-06-28 00:55:05,272 INFO L125 PetriNetUnfolderBase]: For 120913/120913 co-relation queries the response was YES. [2024-06-28 00:55:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 3060 events. 1752/3060 cut-off events. For 120913/120913 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18185 event pairs, 335 based on Foata normal form. 2/2926 useless extension candidates. Maximal degree in co-relation 21886. Up to 2388 conditions per place. [2024-06-28 00:55:05,312 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 289 selfloop transitions, 136 changer transitions 0/432 dead transitions. [2024-06-28 00:55:05,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 432 transitions, 7162 flow [2024-06-28 00:55:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 00:55:05,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 00:55:05,313 INFO L175 Difference]: Start difference. First operand has 332 places, 397 transitions, 5874 flow. Second operand 11 states and 177 transitions. [2024-06-28 00:55:05,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 432 transitions, 7162 flow [2024-06-28 00:55:05,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 432 transitions, 6882 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:05,869 INFO L231 Difference]: Finished difference. Result has 336 places, 401 transitions, 6036 flow [2024-06-28 00:55:05,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5594, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6036, PETRI_PLACES=336, PETRI_TRANSITIONS=401} [2024-06-28 00:55:05,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-28 00:55:05,870 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 401 transitions, 6036 flow [2024-06-28 00:55:05,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:05,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:05,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:05,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:55:05,870 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:05,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1073961785, now seen corresponding path program 1 times [2024-06-28 00:55:05,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:05,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350495527] [2024-06-28 00:55:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:05,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350495527] [2024-06-28 00:55:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350495527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:07,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698601480] [2024-06-28 00:55:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:07,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:07,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 401 transitions, 6036 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:07,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:07,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:07,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:08,276 INFO L124 PetriNetUnfolderBase]: 1784/3128 cut-off events. [2024-06-28 00:55:08,276 INFO L125 PetriNetUnfolderBase]: For 130055/130058 co-relation queries the response was YES. [2024-06-28 00:55:08,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22491 conditions, 3128 events. 1784/3128 cut-off events. For 130055/130058 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18827 event pairs, 434 based on Foata normal form. 6/2997 useless extension candidates. Maximal degree in co-relation 22336. Up to 2780 conditions per place. [2024-06-28 00:55:08,313 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 376 selfloop transitions, 50 changer transitions 0/433 dead transitions. [2024-06-28 00:55:08,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 433 transitions, 7126 flow [2024-06-28 00:55:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:55:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:55:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-28 00:55:08,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39035087719298245 [2024-06-28 00:55:08,315 INFO L175 Difference]: Start difference. First operand has 336 places, 401 transitions, 6036 flow. Second operand 12 states and 178 transitions. [2024-06-28 00:55:08,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 433 transitions, 7126 flow [2024-06-28 00:55:08,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 433 transitions, 6890 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:08,928 INFO L231 Difference]: Finished difference. Result has 341 places, 403 transitions, 5993 flow [2024-06-28 00:55:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5800, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5993, PETRI_PLACES=341, PETRI_TRANSITIONS=403} [2024-06-28 00:55:08,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-28 00:55:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 403 transitions, 5993 flow [2024-06-28 00:55:08,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:08,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:08,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:55:08,930 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:08,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -531910841, now seen corresponding path program 10 times [2024-06-28 00:55:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325852290] [2024-06-28 00:55:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325852290] [2024-06-28 00:55:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325852290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125258021] [2024-06-28 00:55:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:09,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 403 transitions, 5993 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:09,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:09,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:10,829 INFO L124 PetriNetUnfolderBase]: 1800/3152 cut-off events. [2024-06-28 00:55:10,830 INFO L125 PetriNetUnfolderBase]: For 127231/127231 co-relation queries the response was YES. [2024-06-28 00:55:10,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22784 conditions, 3152 events. 1800/3152 cut-off events. For 127231/127231 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18905 event pairs, 437 based on Foata normal form. 2/3023 useless extension candidates. Maximal degree in co-relation 22627. Up to 2713 conditions per place. [2024-06-28 00:55:10,868 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 353 selfloop transitions, 68 changer transitions 0/428 dead transitions. [2024-06-28 00:55:10,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 428 transitions, 7049 flow [2024-06-28 00:55:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:55:10,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064327485380117 [2024-06-28 00:55:10,869 INFO L175 Difference]: Start difference. First operand has 341 places, 403 transitions, 5993 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:55:10,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 428 transitions, 7049 flow [2024-06-28 00:55:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 428 transitions, 6881 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:11,499 INFO L231 Difference]: Finished difference. Result has 341 places, 405 transitions, 6091 flow [2024-06-28 00:55:11,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5825, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6091, PETRI_PLACES=341, PETRI_TRANSITIONS=405} [2024-06-28 00:55:11,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-28 00:55:11,500 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 405 transitions, 6091 flow [2024-06-28 00:55:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:11,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:11,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:11,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:55:11,501 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:11,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -513502331, now seen corresponding path program 11 times [2024-06-28 00:55:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317288685] [2024-06-28 00:55:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:12,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:12,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317288685] [2024-06-28 00:55:12,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317288685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:12,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:12,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:12,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947007246] [2024-06-28 00:55:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:12,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:12,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:12,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:12,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 405 transitions, 6091 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:12,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:12,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:12,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:13,376 INFO L124 PetriNetUnfolderBase]: 1816/3179 cut-off events. [2024-06-28 00:55:13,377 INFO L125 PetriNetUnfolderBase]: For 132928/132928 co-relation queries the response was YES. [2024-06-28 00:55:13,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23183 conditions, 3179 events. 1816/3179 cut-off events. For 132928/132928 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19105 event pairs, 275 based on Foata normal form. 2/3057 useless extension candidates. Maximal degree in co-relation 23025. Up to 2433 conditions per place. [2024-06-28 00:55:13,414 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 108 changer transitions 0/441 dead transitions. [2024-06-28 00:55:13,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 441 transitions, 7288 flow [2024-06-28 00:55:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:55:13,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:55:13,416 INFO L175 Difference]: Start difference. First operand has 341 places, 405 transitions, 6091 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:55:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 441 transitions, 7288 flow [2024-06-28 00:55:14,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 441 transitions, 7052 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:14,033 INFO L231 Difference]: Finished difference. Result has 346 places, 412 transitions, 6380 flow [2024-06-28 00:55:14,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5863, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6380, PETRI_PLACES=346, PETRI_TRANSITIONS=412} [2024-06-28 00:55:14,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-28 00:55:14,033 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 412 transitions, 6380 flow [2024-06-28 00:55:14,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:14,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:14,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:14,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:55:14,034 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash -424751997, now seen corresponding path program 7 times [2024-06-28 00:55:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081611582] [2024-06-28 00:55:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081611582] [2024-06-28 00:55:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081611582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:15,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:15,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239207527] [2024-06-28 00:55:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:15,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:15,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 412 transitions, 6380 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:15,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:16,362 INFO L124 PetriNetUnfolderBase]: 1827/3199 cut-off events. [2024-06-28 00:55:16,363 INFO L125 PetriNetUnfolderBase]: For 130049/130049 co-relation queries the response was YES. [2024-06-28 00:55:16,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23720 conditions, 3199 events. 1827/3199 cut-off events. For 130049/130049 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19236 event pairs, 440 based on Foata normal form. 2/3067 useless extension candidates. Maximal degree in co-relation 23559. Up to 2788 conditions per place. [2024-06-28 00:55:16,405 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 369 selfloop transitions, 62 changer transitions 0/438 dead transitions. [2024-06-28 00:55:16,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 438 transitions, 7416 flow [2024-06-28 00:55:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:55:16,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 00:55:16,409 INFO L175 Difference]: Start difference. First operand has 346 places, 412 transitions, 6380 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:55:16,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 438 transitions, 7416 flow [2024-06-28 00:55:17,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 438 transitions, 7158 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:17,105 INFO L231 Difference]: Finished difference. Result has 350 places, 414 transitions, 6348 flow [2024-06-28 00:55:17,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6348, PETRI_PLACES=350, PETRI_TRANSITIONS=414} [2024-06-28 00:55:17,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 308 predicate places. [2024-06-28 00:55:17,106 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 414 transitions, 6348 flow [2024-06-28 00:55:17,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:17,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:17,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:55:17,106 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:17,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -424931735, now seen corresponding path program 3 times [2024-06-28 00:55:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599646172] [2024-06-28 00:55:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599646172] [2024-06-28 00:55:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599646172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917309488] [2024-06-28 00:55:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:18,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:18,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 414 transitions, 6348 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:18,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:18,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:18,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:19,119 INFO L124 PetriNetUnfolderBase]: 1825/3196 cut-off events. [2024-06-28 00:55:19,119 INFO L125 PetriNetUnfolderBase]: For 115167/115167 co-relation queries the response was YES. [2024-06-28 00:55:19,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23187 conditions, 3196 events. 1825/3196 cut-off events. For 115167/115167 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19259 event pairs, 436 based on Foata normal form. 1/3061 useless extension candidates. Maximal degree in co-relation 23025. Up to 2775 conditions per place. [2024-06-28 00:55:19,161 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 352 selfloop transitions, 76 changer transitions 0/435 dead transitions. [2024-06-28 00:55:19,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 435 transitions, 7282 flow [2024-06-28 00:55:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:55:19,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40058479532163743 [2024-06-28 00:55:19,162 INFO L175 Difference]: Start difference. First operand has 350 places, 414 transitions, 6348 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:55:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 435 transitions, 7282 flow [2024-06-28 00:55:19,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 435 transitions, 7080 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:19,840 INFO L231 Difference]: Finished difference. Result has 352 places, 414 transitions, 6324 flow [2024-06-28 00:55:19,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6146, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6324, PETRI_PLACES=352, PETRI_TRANSITIONS=414} [2024-06-28 00:55:19,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 00:55:19,841 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 414 transitions, 6324 flow [2024-06-28 00:55:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:19,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:19,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:19,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:55:19,845 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:19,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1157877883, now seen corresponding path program 12 times [2024-06-28 00:55:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866573355] [2024-06-28 00:55:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:19,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:20,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866573355] [2024-06-28 00:55:20,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866573355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:20,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:20,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118569156] [2024-06-28 00:55:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:20,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:20,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:20,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 414 transitions, 6324 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:20,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:20,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:20,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:21,826 INFO L124 PetriNetUnfolderBase]: 1841/3218 cut-off events. [2024-06-28 00:55:21,826 INFO L125 PetriNetUnfolderBase]: For 118382/118382 co-relation queries the response was YES. [2024-06-28 00:55:21,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23218 conditions, 3218 events. 1841/3218 cut-off events. For 118382/118382 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 19383 event pairs, 348 based on Foata normal form. 2/3081 useless extension candidates. Maximal degree in co-relation 23055. Up to 2640 conditions per place. [2024-06-28 00:55:21,869 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 330 selfloop transitions, 106 changer transitions 0/443 dead transitions. [2024-06-28 00:55:21,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 443 transitions, 7453 flow [2024-06-28 00:55:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:55:21,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:55:21,871 INFO L175 Difference]: Start difference. First operand has 352 places, 414 transitions, 6324 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:55:21,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 443 transitions, 7453 flow [2024-06-28 00:55:22,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 443 transitions, 7257 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:22,552 INFO L231 Difference]: Finished difference. Result has 353 places, 416 transitions, 6448 flow [2024-06-28 00:55:22,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6128, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6448, PETRI_PLACES=353, PETRI_TRANSITIONS=416} [2024-06-28 00:55:22,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-28 00:55:22,552 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 416 transitions, 6448 flow [2024-06-28 00:55:22,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:22,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:22,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:22,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:55:22,560 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:22,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash 52292823, now seen corresponding path program 8 times [2024-06-28 00:55:22,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481504298] [2024-06-28 00:55:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481504298] [2024-06-28 00:55:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481504298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:23,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851082185] [2024-06-28 00:55:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:23,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:23,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:23,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 416 transitions, 6448 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:23,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:23,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:23,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:24,889 INFO L124 PetriNetUnfolderBase]: 1852/3235 cut-off events. [2024-06-28 00:55:24,889 INFO L125 PetriNetUnfolderBase]: For 120119/120119 co-relation queries the response was YES. [2024-06-28 00:55:24,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23537 conditions, 3235 events. 1852/3235 cut-off events. For 120119/120119 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 19467 event pairs, 348 based on Foata normal form. 2/3095 useless extension candidates. Maximal degree in co-relation 23373. Up to 2641 conditions per place. [2024-06-28 00:55:24,929 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 329 selfloop transitions, 110 changer transitions 0/446 dead transitions. [2024-06-28 00:55:24,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 446 transitions, 7563 flow [2024-06-28 00:55:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:55:24,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:55:24,930 INFO L175 Difference]: Start difference. First operand has 353 places, 416 transitions, 6448 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:55:24,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 446 transitions, 7563 flow [2024-06-28 00:55:25,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 446 transitions, 7263 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:25,551 INFO L231 Difference]: Finished difference. Result has 356 places, 418 transitions, 6468 flow [2024-06-28 00:55:25,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6468, PETRI_PLACES=356, PETRI_TRANSITIONS=418} [2024-06-28 00:55:25,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-28 00:55:25,551 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 418 transitions, 6468 flow [2024-06-28 00:55:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:25,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:25,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:25,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:55:25,552 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:25,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1139206273, now seen corresponding path program 9 times [2024-06-28 00:55:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398885202] [2024-06-28 00:55:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:26,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:26,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398885202] [2024-06-28 00:55:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398885202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:26,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699017844] [2024-06-28 00:55:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:26,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:27,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:27,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 418 transitions, 6468 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:27,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:27,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:28,113 INFO L124 PetriNetUnfolderBase]: 1893/3298 cut-off events. [2024-06-28 00:55:28,114 INFO L125 PetriNetUnfolderBase]: For 134164/134164 co-relation queries the response was YES. [2024-06-28 00:55:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24531 conditions, 3298 events. 1893/3298 cut-off events. For 134164/134164 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19856 event pairs, 346 based on Foata normal form. 2/3155 useless extension candidates. Maximal degree in co-relation 24366. Up to 2383 conditions per place. [2024-06-28 00:55:28,151 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 296 selfloop transitions, 152 changer transitions 0/455 dead transitions. [2024-06-28 00:55:28,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 455 transitions, 8101 flow [2024-06-28 00:55:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:55:28,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 00:55:28,152 INFO L175 Difference]: Start difference. First operand has 356 places, 418 transitions, 6468 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:55:28,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 455 transitions, 8101 flow [2024-06-28 00:55:28,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 455 transitions, 7815 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:28,799 INFO L231 Difference]: Finished difference. Result has 358 places, 424 transitions, 6774 flow [2024-06-28 00:55:28,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6182, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6774, PETRI_PLACES=358, PETRI_TRANSITIONS=424} [2024-06-28 00:55:28,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 00:55:28,800 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 424 transitions, 6774 flow [2024-06-28 00:55:28,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:28,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:28,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:28,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:55:28,800 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:28,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1139197593, now seen corresponding path program 2 times [2024-06-28 00:55:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:28,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424665172] [2024-06-28 00:55:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424665172] [2024-06-28 00:55:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424665172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:30,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:30,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:30,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768074939] [2024-06-28 00:55:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:30,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:30,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:30,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:30,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 424 transitions, 6774 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:30,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:30,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:30,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:31,908 INFO L124 PetriNetUnfolderBase]: 1899/3311 cut-off events. [2024-06-28 00:55:31,908 INFO L125 PetriNetUnfolderBase]: For 134091/134091 co-relation queries the response was YES. [2024-06-28 00:55:31,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24756 conditions, 3311 events. 1899/3311 cut-off events. For 134091/134091 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20023 event pairs, 510 based on Foata normal form. 1/3167 useless extension candidates. Maximal degree in co-relation 24590. Up to 2917 conditions per place. [2024-06-28 00:55:31,952 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 378 selfloop transitions, 65 changer transitions 0/450 dead transitions. [2024-06-28 00:55:31,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 450 transitions, 7848 flow [2024-06-28 00:55:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 00:55:31,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39210526315789473 [2024-06-28 00:55:31,954 INFO L175 Difference]: Start difference. First operand has 358 places, 424 transitions, 6774 flow. Second operand 10 states and 149 transitions. [2024-06-28 00:55:31,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 450 transitions, 7848 flow [2024-06-28 00:55:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 450 transitions, 7625 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 00:55:32,658 INFO L231 Difference]: Finished difference. Result has 363 places, 426 transitions, 6753 flow [2024-06-28 00:55:32,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6551, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6753, PETRI_PLACES=363, PETRI_TRANSITIONS=426} [2024-06-28 00:55:32,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-28 00:55:32,658 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 426 transitions, 6753 flow [2024-06-28 00:55:32,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:32,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:32,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:55:32,659 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1145872947, now seen corresponding path program 13 times [2024-06-28 00:55:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247286902] [2024-06-28 00:55:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:33,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247286902] [2024-06-28 00:55:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247286902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:33,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503027833] [2024-06-28 00:55:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:33,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:33,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 426 transitions, 6753 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:33,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:33,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:33,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:34,741 INFO L124 PetriNetUnfolderBase]: 1915/3335 cut-off events. [2024-06-28 00:55:34,742 INFO L125 PetriNetUnfolderBase]: For 137591/137591 co-relation queries the response was YES. [2024-06-28 00:55:34,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25010 conditions, 3335 events. 1915/3335 cut-off events. For 137591/137591 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20146 event pairs, 402 based on Foata normal form. 2/3193 useless extension candidates. Maximal degree in co-relation 24842. Up to 2886 conditions per place. [2024-06-28 00:55:34,783 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 362 selfloop transitions, 84 changer transitions 0/453 dead transitions. [2024-06-28 00:55:34,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 453 transitions, 7890 flow [2024-06-28 00:55:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:55:34,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2024-06-28 00:55:34,784 INFO L175 Difference]: Start difference. First operand has 363 places, 426 transitions, 6753 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:55:34,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 453 transitions, 7890 flow [2024-06-28 00:55:35,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 453 transitions, 7730 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:35,465 INFO L231 Difference]: Finished difference. Result has 364 places, 428 transitions, 6869 flow [2024-06-28 00:55:35,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6869, PETRI_PLACES=364, PETRI_TRANSITIONS=428} [2024-06-28 00:55:35,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-28 00:55:35,465 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 428 transitions, 6869 flow [2024-06-28 00:55:35,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:35,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:35,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:35,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:55:35,466 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:35,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 70965859, now seen corresponding path program 10 times [2024-06-28 00:55:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:35,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157246174] [2024-06-28 00:55:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:35,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:36,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:36,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157246174] [2024-06-28 00:55:36,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157246174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:36,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:36,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335632768] [2024-06-28 00:55:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:36,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 428 transitions, 6869 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:38,070 INFO L124 PetriNetUnfolderBase]: 1911/3329 cut-off events. [2024-06-28 00:55:38,070 INFO L125 PetriNetUnfolderBase]: For 131095/131095 co-relation queries the response was YES. [2024-06-28 00:55:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24838 conditions, 3329 events. 1911/3329 cut-off events. For 131095/131095 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20112 event pairs, 353 based on Foata normal form. 2/3185 useless extension candidates. Maximal degree in co-relation 24669. Up to 2417 conditions per place. [2024-06-28 00:55:38,116 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 288 selfloop transitions, 164 changer transitions 0/459 dead transitions. [2024-06-28 00:55:38,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 459 transitions, 8092 flow [2024-06-28 00:55:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:55:38,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:55:38,118 INFO L175 Difference]: Start difference. First operand has 364 places, 428 transitions, 6869 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:55:38,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 459 transitions, 8092 flow [2024-06-28 00:55:38,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 459 transitions, 7760 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:38,778 INFO L231 Difference]: Finished difference. Result has 367 places, 428 transitions, 6877 flow [2024-06-28 00:55:38,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6539, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6877, PETRI_PLACES=367, PETRI_TRANSITIONS=428} [2024-06-28 00:55:38,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-28 00:55:38,779 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 428 transitions, 6877 flow [2024-06-28 00:55:38,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:38,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:38,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:38,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:55:38,779 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:38,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1145877597, now seen corresponding path program 14 times [2024-06-28 00:55:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900125116] [2024-06-28 00:55:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:39,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900125116] [2024-06-28 00:55:39,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900125116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:39,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444838076] [2024-06-28 00:55:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:39,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:39,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 428 transitions, 6877 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:39,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:39,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:39,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:40,788 INFO L124 PetriNetUnfolderBase]: 1927/3358 cut-off events. [2024-06-28 00:55:40,788 INFO L125 PetriNetUnfolderBase]: For 128937/128937 co-relation queries the response was YES. [2024-06-28 00:55:40,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25097 conditions, 3358 events. 1927/3358 cut-off events. For 128937/128937 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 20345 event pairs, 385 based on Foata normal form. 2/3215 useless extension candidates. Maximal degree in co-relation 24927. Up to 2892 conditions per place. [2024-06-28 00:55:40,833 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 367 selfloop transitions, 84 changer transitions 0/458 dead transitions. [2024-06-28 00:55:40,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 458 transitions, 8054 flow [2024-06-28 00:55:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:55:40,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-06-28 00:55:40,834 INFO L175 Difference]: Start difference. First operand has 367 places, 428 transitions, 6877 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:55:40,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 458 transitions, 8054 flow [2024-06-28 00:55:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 458 transitions, 7756 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:41,515 INFO L231 Difference]: Finished difference. Result has 368 places, 432 transitions, 6893 flow [2024-06-28 00:55:41,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6893, PETRI_PLACES=368, PETRI_TRANSITIONS=432} [2024-06-28 00:55:41,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-28 00:55:41,516 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 432 transitions, 6893 flow [2024-06-28 00:55:41,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:41,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:41,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:55:41,516 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:41,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1145693023, now seen corresponding path program 11 times [2024-06-28 00:55:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:41,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017370263] [2024-06-28 00:55:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017370263] [2024-06-28 00:55:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017370263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023108181] [2024-06-28 00:55:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:42,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:42,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:42,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 432 transitions, 6893 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:42,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:42,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:42,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:43,753 INFO L124 PetriNetUnfolderBase]: 1948/3389 cut-off events. [2024-06-28 00:55:43,753 INFO L125 PetriNetUnfolderBase]: For 135741/135741 co-relation queries the response was YES. [2024-06-28 00:55:43,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25432 conditions, 3389 events. 1948/3389 cut-off events. For 135741/135741 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20514 event pairs, 403 based on Foata normal form. 2/3240 useless extension candidates. Maximal degree in co-relation 25261. Up to 2901 conditions per place. [2024-06-28 00:55:43,799 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 366 selfloop transitions, 90 changer transitions 0/463 dead transitions. [2024-06-28 00:55:43,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 463 transitions, 8256 flow [2024-06-28 00:55:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:55:43,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:55:43,801 INFO L175 Difference]: Start difference. First operand has 368 places, 432 transitions, 6893 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:55:43,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 463 transitions, 8256 flow [2024-06-28 00:55:44,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 463 transitions, 7990 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:44,507 INFO L231 Difference]: Finished difference. Result has 373 places, 436 transitions, 6995 flow [2024-06-28 00:55:44,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6629, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6995, PETRI_PLACES=373, PETRI_TRANSITIONS=436} [2024-06-28 00:55:44,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-28 00:55:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 436 transitions, 6995 flow [2024-06-28 00:55:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:44,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:55:44,509 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:44,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1140799539, now seen corresponding path program 2 times [2024-06-28 00:55:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523090774] [2024-06-28 00:55:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523090774] [2024-06-28 00:55:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523090774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460308987] [2024-06-28 00:55:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:45,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:45,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:45,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 436 transitions, 6995 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:45,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:45,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:45,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:46,831 INFO L124 PetriNetUnfolderBase]: 1980/3457 cut-off events. [2024-06-28 00:55:46,831 INFO L125 PetriNetUnfolderBase]: For 142088/142091 co-relation queries the response was YES. [2024-06-28 00:55:46,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25736 conditions, 3457 events. 1980/3457 cut-off events. For 142088/142091 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 21217 event pairs, 464 based on Foata normal form. 6/3313 useless extension candidates. Maximal degree in co-relation 25563. Up to 3006 conditions per place. [2024-06-28 00:55:46,879 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 402 selfloop transitions, 58 changer transitions 0/467 dead transitions. [2024-06-28 00:55:46,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 467 transitions, 8161 flow [2024-06-28 00:55:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:55:46,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-06-28 00:55:46,881 INFO L175 Difference]: Start difference. First operand has 373 places, 436 transitions, 6995 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:55:46,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 467 transitions, 8161 flow [2024-06-28 00:55:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 467 transitions, 7923 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:47,655 INFO L231 Difference]: Finished difference. Result has 377 places, 438 transitions, 6967 flow [2024-06-28 00:55:47,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6757, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6967, PETRI_PLACES=377, PETRI_TRANSITIONS=438} [2024-06-28 00:55:47,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 00:55:47,658 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 438 transitions, 6967 flow [2024-06-28 00:55:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:47,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:47,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:55:47,659 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:47,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1434556675, now seen corresponding path program 15 times [2024-06-28 00:55:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088877689] [2024-06-28 00:55:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:48,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088877689] [2024-06-28 00:55:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088877689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718216534] [2024-06-28 00:55:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:48,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:48,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 438 transitions, 6967 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:48,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:48,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:48,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:49,849 INFO L124 PetriNetUnfolderBase]: 1996/3477 cut-off events. [2024-06-28 00:55:49,849 INFO L125 PetriNetUnfolderBase]: For 138476/138479 co-relation queries the response was YES. [2024-06-28 00:55:49,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25917 conditions, 3477 events. 1996/3477 cut-off events. For 138476/138479 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 21195 event pairs, 350 based on Foata normal form. 2/3323 useless extension candidates. Maximal degree in co-relation 25743. Up to 2833 conditions per place. [2024-06-28 00:55:49,899 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 344 selfloop transitions, 112 changer transitions 0/463 dead transitions. [2024-06-28 00:55:49,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 463 transitions, 8093 flow [2024-06-28 00:55:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:55:49,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-06-28 00:55:49,901 INFO L175 Difference]: Start difference. First operand has 377 places, 438 transitions, 6967 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:55:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 463 transitions, 8093 flow [2024-06-28 00:55:50,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 463 transitions, 7909 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:50,684 INFO L231 Difference]: Finished difference. Result has 378 places, 440 transitions, 7114 flow [2024-06-28 00:55:50,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7114, PETRI_PLACES=378, PETRI_TRANSITIONS=440} [2024-06-28 00:55:50,685 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-28 00:55:50,685 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 440 transitions, 7114 flow [2024-06-28 00:55:50,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:50,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:50,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:55:50,686 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:50,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1559399885, now seen corresponding path program 16 times [2024-06-28 00:55:50,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:50,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120445625] [2024-06-28 00:55:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:50,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120445625] [2024-06-28 00:55:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120445625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054279936] [2024-06-28 00:55:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:51,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 440 transitions, 7114 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:51,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:51,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:52,712 INFO L124 PetriNetUnfolderBase]: 2012/3506 cut-off events. [2024-06-28 00:55:52,712 INFO L125 PetriNetUnfolderBase]: For 140393/140396 co-relation queries the response was YES. [2024-06-28 00:55:52,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26286 conditions, 3506 events. 2012/3506 cut-off events. For 140393/140396 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 21429 event pairs, 434 based on Foata normal form. 2/3351 useless extension candidates. Maximal degree in co-relation 26111. Up to 3082 conditions per place. [2024-06-28 00:55:52,765 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 382 selfloop transitions, 75 changer transitions 0/464 dead transitions. [2024-06-28 00:55:52,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 464 transitions, 8265 flow [2024-06-28 00:55:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:55:52,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-06-28 00:55:52,766 INFO L175 Difference]: Start difference. First operand has 378 places, 440 transitions, 7114 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:55:52,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 464 transitions, 8265 flow [2024-06-28 00:55:53,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 464 transitions, 7952 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:53,569 INFO L231 Difference]: Finished difference. Result has 380 places, 442 transitions, 7060 flow [2024-06-28 00:55:53,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6801, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7060, PETRI_PLACES=380, PETRI_TRANSITIONS=442} [2024-06-28 00:55:53,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 00:55:53,570 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 442 transitions, 7060 flow [2024-06-28 00:55:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:53,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:53,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:53,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:55:53,570 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:53,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash 945125601, now seen corresponding path program 12 times [2024-06-28 00:55:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147202457] [2024-06-28 00:55:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:54,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147202457] [2024-06-28 00:55:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147202457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:54,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357825328] [2024-06-28 00:55:54,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:54,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:54,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:54,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 442 transitions, 7060 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:54,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:54,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:54,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:55,999 INFO L124 PetriNetUnfolderBase]: 2038/3546 cut-off events. [2024-06-28 00:55:55,999 INFO L125 PetriNetUnfolderBase]: For 151164/151167 co-relation queries the response was YES. [2024-06-28 00:55:56,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26693 conditions, 3546 events. 2038/3546 cut-off events. For 151164/151167 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 21664 event pairs, 353 based on Foata normal form. 2/3388 useless extension candidates. Maximal degree in co-relation 26517. Up to 2838 conditions per place. [2024-06-28 00:55:56,045 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 347 selfloop transitions, 120 changer transitions 0/474 dead transitions. [2024-06-28 00:55:56,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 474 transitions, 8462 flow [2024-06-28 00:55:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:55:56,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 00:55:56,046 INFO L175 Difference]: Start difference. First operand has 380 places, 442 transitions, 7060 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:55:56,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 474 transitions, 8462 flow [2024-06-28 00:55:56,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 474 transitions, 8219 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:56,749 INFO L231 Difference]: Finished difference. Result has 383 places, 446 transitions, 7254 flow [2024-06-28 00:55:56,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7254, PETRI_PLACES=383, PETRI_TRANSITIONS=446} [2024-06-28 00:55:56,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-28 00:55:56,749 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 446 transitions, 7254 flow [2024-06-28 00:55:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:56,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:56,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:55:56,750 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:56,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1842057475, now seen corresponding path program 13 times [2024-06-28 00:55:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:56,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997864365] [2024-06-28 00:55:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:56,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:57,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997864365] [2024-06-28 00:55:57,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997864365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:57,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535885289] [2024-06-28 00:55:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:57,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:55:57,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 446 transitions, 7254 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:57,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:57,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:55:57,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:59,141 INFO L124 PetriNetUnfolderBase]: 2064/3586 cut-off events. [2024-06-28 00:55:59,141 INFO L125 PetriNetUnfolderBase]: For 162671/162674 co-relation queries the response was YES. [2024-06-28 00:55:59,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27474 conditions, 3586 events. 2064/3586 cut-off events. For 162671/162674 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 21937 event pairs, 426 based on Foata normal form. 2/3426 useless extension candidates. Maximal degree in co-relation 27297. Up to 3095 conditions per place. [2024-06-28 00:55:59,192 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 384 selfloop transitions, 85 changer transitions 0/476 dead transitions. [2024-06-28 00:55:59,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 476 transitions, 8670 flow [2024-06-28 00:55:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:55:59,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 00:55:59,193 INFO L175 Difference]: Start difference. First operand has 383 places, 446 transitions, 7254 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:55:59,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 476 transitions, 8670 flow [2024-06-28 00:55:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 476 transitions, 8412 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:59,997 INFO L231 Difference]: Finished difference. Result has 387 places, 450 transitions, 7371 flow [2024-06-28 00:55:59,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6996, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7371, PETRI_PLACES=387, PETRI_TRANSITIONS=450} [2024-06-28 00:55:59,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-28 00:55:59,997 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 450 transitions, 7371 flow [2024-06-28 00:55:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:59,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:59,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:55:59,998 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:59,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1230225471, now seen corresponding path program 14 times [2024-06-28 00:55:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:59,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185998130] [2024-06-28 00:55:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185998130] [2024-06-28 00:56:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185998130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:00,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469143677] [2024-06-28 00:56:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:00,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:00,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 450 transitions, 7371 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:00,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:00,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:00,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:02,120 INFO L124 PetriNetUnfolderBase]: 2122/3674 cut-off events. [2024-06-28 00:56:02,120 INFO L125 PetriNetUnfolderBase]: For 191910/191913 co-relation queries the response was YES. [2024-06-28 00:56:02,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29178 conditions, 3674 events. 2122/3674 cut-off events. For 191910/191913 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 22475 event pairs, 351 based on Foata normal form. 2/3508 useless extension candidates. Maximal degree in co-relation 28999. Up to 2042 conditions per place. [2024-06-28 00:56:02,174 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 303 selfloop transitions, 178 changer transitions 0/488 dead transitions. [2024-06-28 00:56:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 488 transitions, 9297 flow [2024-06-28 00:56:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 00:56:02,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-28 00:56:02,176 INFO L175 Difference]: Start difference. First operand has 387 places, 450 transitions, 7371 flow. Second operand 10 states and 168 transitions. [2024-06-28 00:56:02,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 488 transitions, 9297 flow [2024-06-28 00:56:03,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 488 transitions, 9095 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 00:56:03,183 INFO L231 Difference]: Finished difference. Result has 391 places, 458 transitions, 7890 flow [2024-06-28 00:56:03,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7890, PETRI_PLACES=391, PETRI_TRANSITIONS=458} [2024-06-28 00:56:03,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-28 00:56:03,183 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 458 transitions, 7890 flow [2024-06-28 00:56:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:03,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:03,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:56:03,184 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:03,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1620166481, now seen corresponding path program 17 times [2024-06-28 00:56:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:03,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899892093] [2024-06-28 00:56:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:04,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899892093] [2024-06-28 00:56:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899892093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:04,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:04,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034556365] [2024-06-28 00:56:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:04,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:04,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 458 transitions, 7890 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:04,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:04,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:04,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:05,312 INFO L124 PetriNetUnfolderBase]: 2138/3702 cut-off events. [2024-06-28 00:56:05,313 INFO L125 PetriNetUnfolderBase]: For 197708/197711 co-relation queries the response was YES. [2024-06-28 00:56:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30029 conditions, 3702 events. 2138/3702 cut-off events. For 197708/197711 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 22721 event pairs, 446 based on Foata normal form. 2/3537 useless extension candidates. Maximal degree in co-relation 29848. Up to 3237 conditions per place. [2024-06-28 00:56:05,369 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 397 selfloop transitions, 81 changer transitions 0/485 dead transitions. [2024-06-28 00:56:05,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 485 transitions, 9105 flow [2024-06-28 00:56:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:56:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:56:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:56:05,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:56:05,371 INFO L175 Difference]: Start difference. First operand has 391 places, 458 transitions, 7890 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:56:05,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 485 transitions, 9105 flow [2024-06-28 00:56:06,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 485 transitions, 8710 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 00:56:06,433 INFO L231 Difference]: Finished difference. Result has 395 places, 460 transitions, 7771 flow [2024-06-28 00:56:06,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7495, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7771, PETRI_PLACES=395, PETRI_TRANSITIONS=460} [2024-06-28 00:56:06,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-28 00:56:06,434 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 460 transitions, 7771 flow [2024-06-28 00:56:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:06,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:06,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:06,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:56:06,434 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:06,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1850092675, now seen corresponding path program 15 times [2024-06-28 00:56:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796433595] [2024-06-28 00:56:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796433595] [2024-06-28 00:56:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796433595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312642518] [2024-06-28 00:56:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:07,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:07,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 460 transitions, 7771 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:07,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:07,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:07,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:08,774 INFO L124 PetriNetUnfolderBase]: 2149/3719 cut-off events. [2024-06-28 00:56:08,774 INFO L125 PetriNetUnfolderBase]: For 193718/193721 co-relation queries the response was YES. [2024-06-28 00:56:08,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30037 conditions, 3719 events. 2149/3719 cut-off events. For 193718/193721 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 22834 event pairs, 439 based on Foata normal form. 2/3552 useless extension candidates. Maximal degree in co-relation 29855. Up to 3221 conditions per place. [2024-06-28 00:56:08,827 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 394 selfloop transitions, 86 changer transitions 0/487 dead transitions. [2024-06-28 00:56:08,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 487 transitions, 9098 flow [2024-06-28 00:56:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:56:08,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 00:56:08,828 INFO L175 Difference]: Start difference. First operand has 395 places, 460 transitions, 7771 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:56:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 487 transitions, 9098 flow [2024-06-28 00:56:09,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 487 transitions, 8840 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:09,713 INFO L231 Difference]: Finished difference. Result has 398 places, 462 transitions, 7777 flow [2024-06-28 00:56:09,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7513, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7777, PETRI_PLACES=398, PETRI_TRANSITIONS=462} [2024-06-28 00:56:09,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-28 00:56:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 462 transitions, 7777 flow [2024-06-28 00:56:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:09,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:09,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:56:09,714 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:09,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1787480959, now seen corresponding path program 16 times [2024-06-28 00:56:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424019625] [2024-06-28 00:56:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424019625] [2024-06-28 00:56:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424019625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:10,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:10,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:10,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867120145] [2024-06-28 00:56:10,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:10,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:10,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:10,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 462 transitions, 7777 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:10,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:10,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:12,028 INFO L124 PetriNetUnfolderBase]: 2145/3712 cut-off events. [2024-06-28 00:56:12,028 INFO L125 PetriNetUnfolderBase]: For 187480/187480 co-relation queries the response was YES. [2024-06-28 00:56:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29595 conditions, 3712 events. 2145/3712 cut-off events. For 187480/187480 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 22751 event pairs, 448 based on Foata normal form. 2/3546 useless extension candidates. Maximal degree in co-relation 29412. Up to 3277 conditions per place. [2024-06-28 00:56:12,085 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 397 selfloop transitions, 83 changer transitions 0/487 dead transitions. [2024-06-28 00:56:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 487 transitions, 8870 flow [2024-06-28 00:56:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 00:56:12,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-06-28 00:56:12,086 INFO L175 Difference]: Start difference. First operand has 398 places, 462 transitions, 7777 flow. Second operand 11 states and 163 transitions. [2024-06-28 00:56:12,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 487 transitions, 8870 flow [2024-06-28 00:56:12,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 487 transitions, 8565 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:13,001 INFO L231 Difference]: Finished difference. Result has 402 places, 462 transitions, 7643 flow [2024-06-28 00:56:13,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7472, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7643, PETRI_PLACES=402, PETRI_TRANSITIONS=462} [2024-06-28 00:56:13,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-28 00:56:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 462 transitions, 7643 flow [2024-06-28 00:56:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:56:13,002 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:13,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1717047101, now seen corresponding path program 17 times [2024-06-28 00:56:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935360329] [2024-06-28 00:56:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935360329] [2024-06-28 00:56:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935360329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:14,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651302008] [2024-06-28 00:56:14,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:14,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:14,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 462 transitions, 7643 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:14,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:14,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:15,355 INFO L124 PetriNetUnfolderBase]: 2156/3730 cut-off events. [2024-06-28 00:56:15,356 INFO L125 PetriNetUnfolderBase]: For 189867/189870 co-relation queries the response was YES. [2024-06-28 00:56:15,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29567 conditions, 3730 events. 2156/3730 cut-off events. For 189867/189870 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 22935 event pairs, 446 based on Foata normal form. 2/3562 useless extension candidates. Maximal degree in co-relation 29383. Up to 3235 conditions per place. [2024-06-28 00:56:15,410 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 396 selfloop transitions, 87 changer transitions 0/490 dead transitions. [2024-06-28 00:56:15,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 490 transitions, 8851 flow [2024-06-28 00:56:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:56:15,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:56:15,412 INFO L175 Difference]: Start difference. First operand has 402 places, 462 transitions, 7643 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:56:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 490 transitions, 8851 flow [2024-06-28 00:56:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 490 transitions, 8662 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:56:16,345 INFO L231 Difference]: Finished difference. Result has 401 places, 464 transitions, 7741 flow [2024-06-28 00:56:16,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7454, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7741, PETRI_PLACES=401, PETRI_TRANSITIONS=464} [2024-06-28 00:56:16,346 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-28 00:56:16,346 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 464 transitions, 7741 flow [2024-06-28 00:56:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:16,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:16,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:56:16,346 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:16,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash 945117231, now seen corresponding path program 18 times [2024-06-28 00:56:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311982542] [2024-06-28 00:56:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311982542] [2024-06-28 00:56:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311982542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78926957] [2024-06-28 00:56:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:17,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:17,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 464 transitions, 7741 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:17,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:17,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:17,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:18,918 INFO L124 PetriNetUnfolderBase]: 2167/3747 cut-off events. [2024-06-28 00:56:18,918 INFO L125 PetriNetUnfolderBase]: For 195458/195461 co-relation queries the response was YES. [2024-06-28 00:56:18,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29876 conditions, 3747 events. 2167/3747 cut-off events. For 195458/195461 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23054 event pairs, 414 based on Foata normal form. 2/3578 useless extension candidates. Maximal degree in co-relation 29691. Up to 2081 conditions per place. [2024-06-28 00:56:18,975 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 326 selfloop transitions, 161 changer transitions 0/494 dead transitions. [2024-06-28 00:56:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 494 transitions, 9260 flow [2024-06-28 00:56:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 00:56:18,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-28 00:56:18,976 INFO L175 Difference]: Start difference. First operand has 401 places, 464 transitions, 7741 flow. Second operand 10 states and 166 transitions. [2024-06-28 00:56:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 494 transitions, 9260 flow [2024-06-28 00:56:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 494 transitions, 8995 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:19,913 INFO L231 Difference]: Finished difference. Result has 402 places, 466 transitions, 7896 flow [2024-06-28 00:56:19,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7480, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7896, PETRI_PLACES=402, PETRI_TRANSITIONS=466} [2024-06-28 00:56:19,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-28 00:56:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 466 transitions, 7896 flow [2024-06-28 00:56:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:19,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:19,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:56:19,914 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:19,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1850400257, now seen corresponding path program 3 times [2024-06-28 00:56:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227755943] [2024-06-28 00:56:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:21,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227755943] [2024-06-28 00:56:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227755943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:21,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:21,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510027284] [2024-06-28 00:56:21,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:21,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:21,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:21,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 466 transitions, 7896 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:21,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:21,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:22,591 INFO L124 PetriNetUnfolderBase]: 2199/3812 cut-off events. [2024-06-28 00:56:22,592 INFO L125 PetriNetUnfolderBase]: For 205127/205130 co-relation queries the response was YES. [2024-06-28 00:56:22,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30503 conditions, 3812 events. 2199/3812 cut-off events. For 205127/205130 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23641 event pairs, 532 based on Foata normal form. 6/3647 useless extension candidates. Maximal degree in co-relation 30318. Up to 3456 conditions per place. [2024-06-28 00:56:22,672 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 443 selfloop transitions, 44 changer transitions 0/494 dead transitions. [2024-06-28 00:56:22,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 494 transitions, 9110 flow [2024-06-28 00:56:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:56:22,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875598086124402 [2024-06-28 00:56:22,674 INFO L175 Difference]: Start difference. First operand has 402 places, 466 transitions, 7896 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:56:22,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 494 transitions, 9110 flow [2024-06-28 00:56:23,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 494 transitions, 8831 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:23,810 INFO L231 Difference]: Finished difference. Result has 406 places, 468 transitions, 7802 flow [2024-06-28 00:56:23,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7802, PETRI_PLACES=406, PETRI_TRANSITIONS=468} [2024-06-28 00:56:23,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-28 00:56:23,811 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 468 transitions, 7802 flow [2024-06-28 00:56:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:23,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:23,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:23,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:56:23,811 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:23,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1613732741, now seen corresponding path program 18 times [2024-06-28 00:56:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230044517] [2024-06-28 00:56:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:24,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:24,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230044517] [2024-06-28 00:56:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230044517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281456107] [2024-06-28 00:56:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:24,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:24,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:24,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 468 transitions, 7802 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:24,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:24,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:24,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:25,803 INFO L124 PetriNetUnfolderBase]: 2199/3805 cut-off events. [2024-06-28 00:56:25,803 INFO L125 PetriNetUnfolderBase]: For 193060/193063 co-relation queries the response was YES. [2024-06-28 00:56:25,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29934 conditions, 3805 events. 2199/3805 cut-off events. For 193060/193063 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 23440 event pairs, 471 based on Foata normal form. 2/3635 useless extension candidates. Maximal degree in co-relation 29748. Up to 3371 conditions per place. [2024-06-28 00:56:25,860 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 413 selfloop transitions, 75 changer transitions 0/495 dead transitions. [2024-06-28 00:56:25,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 495 transitions, 9055 flow [2024-06-28 00:56:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:56:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:56:25,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:56:25,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-06-28 00:56:25,861 INFO L175 Difference]: Start difference. First operand has 406 places, 468 transitions, 7802 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:56:25,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 495 transitions, 9055 flow [2024-06-28 00:56:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 495 transitions, 8886 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:26,909 INFO L231 Difference]: Finished difference. Result has 407 places, 472 transitions, 7937 flow [2024-06-28 00:56:26,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7937, PETRI_PLACES=407, PETRI_TRANSITIONS=472} [2024-06-28 00:56:26,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-28 00:56:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 472 transitions, 7937 flow [2024-06-28 00:56:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:26,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:26,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:56:26,911 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:26,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2087902339, now seen corresponding path program 19 times [2024-06-28 00:56:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:26,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220315507] [2024-06-28 00:56:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:26,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:27,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:27,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220315507] [2024-06-28 00:56:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220315507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:27,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054857944] [2024-06-28 00:56:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:27,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:27,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:28,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:28,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 472 transitions, 7937 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:28,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:28,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:28,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:29,380 INFO L124 PetriNetUnfolderBase]: 2195/3799 cut-off events. [2024-06-28 00:56:29,381 INFO L125 PetriNetUnfolderBase]: For 188622/188625 co-relation queries the response was YES. [2024-06-28 00:56:29,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29727 conditions, 3799 events. 2195/3799 cut-off events. For 188622/188625 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 23421 event pairs, 362 based on Foata normal form. 2/3628 useless extension candidates. Maximal degree in co-relation 29539. Up to 2136 conditions per place. [2024-06-28 00:56:29,429 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 312 selfloop transitions, 180 changer transitions 0/499 dead transitions. [2024-06-28 00:56:29,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 499 transitions, 9383 flow [2024-06-28 00:56:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:56:29,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-28 00:56:29,430 INFO L175 Difference]: Start difference. First operand has 407 places, 472 transitions, 7937 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:56:29,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 499 transitions, 9383 flow [2024-06-28 00:56:30,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 499 transitions, 9043 flow, removed 99 selfloop flow, removed 6 redundant places. [2024-06-28 00:56:30,401 INFO L231 Difference]: Finished difference. Result has 411 places, 472 transitions, 7962 flow [2024-06-28 00:56:30,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7597, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7962, PETRI_PLACES=411, PETRI_TRANSITIONS=472} [2024-06-28 00:56:30,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-28 00:56:30,402 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 472 transitions, 7962 flow [2024-06-28 00:56:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:30,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:30,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:56:30,402 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:30,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1613917315, now seen corresponding path program 20 times [2024-06-28 00:56:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319712742] [2024-06-28 00:56:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:31,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319712742] [2024-06-28 00:56:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319712742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:31,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70666330] [2024-06-28 00:56:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:31,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:31,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 472 transitions, 7962 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:31,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:31,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:31,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:32,946 INFO L124 PetriNetUnfolderBase]: 2206/3816 cut-off events. [2024-06-28 00:56:32,946 INFO L125 PetriNetUnfolderBase]: For 191646/191649 co-relation queries the response was YES. [2024-06-28 00:56:32,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30086 conditions, 3816 events. 2206/3816 cut-off events. For 191646/191649 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23508 event pairs, 479 based on Foata normal form. 2/3644 useless extension candidates. Maximal degree in co-relation 29897. Up to 3382 conditions per place. [2024-06-28 00:56:33,002 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 413 selfloop transitions, 77 changer transitions 0/497 dead transitions. [2024-06-28 00:56:33,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 497 transitions, 9173 flow [2024-06-28 00:56:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:56:33,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-06-28 00:56:33,004 INFO L175 Difference]: Start difference. First operand has 411 places, 472 transitions, 7962 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:56:33,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 497 transitions, 9173 flow [2024-06-28 00:56:33,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 497 transitions, 8790 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:56:33,989 INFO L231 Difference]: Finished difference. Result has 411 places, 474 transitions, 7850 flow [2024-06-28 00:56:33,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7850, PETRI_PLACES=411, PETRI_TRANSITIONS=474} [2024-06-28 00:56:33,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-28 00:56:33,990 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 474 transitions, 7850 flow [2024-06-28 00:56:33,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:33,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:33,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:56:33,990 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:33,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2088209921, now seen corresponding path program 4 times [2024-06-28 00:56:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854656927] [2024-06-28 00:56:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:34,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:34,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854656927] [2024-06-28 00:56:34,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854656927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:34,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:34,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:34,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501641523] [2024-06-28 00:56:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:34,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:34,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:34,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:35,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:35,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 474 transitions, 7850 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:35,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:35,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:35,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:36,198 INFO L124 PetriNetUnfolderBase]: 2238/3881 cut-off events. [2024-06-28 00:56:36,198 INFO L125 PetriNetUnfolderBase]: For 203892/203895 co-relation queries the response was YES. [2024-06-28 00:56:36,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30078 conditions, 3881 events. 2238/3881 cut-off events. For 203892/203895 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24139 event pairs, 478 based on Foata normal form. 6/3713 useless extension candidates. Maximal degree in co-relation 29889. Up to 3216 conditions per place. [2024-06-28 00:56:36,258 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 406 selfloop transitions, 91 changer transitions 0/504 dead transitions. [2024-06-28 00:56:36,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 504 transitions, 9268 flow [2024-06-28 00:56:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:56:36,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-06-28 00:56:36,259 INFO L175 Difference]: Start difference. First operand has 411 places, 474 transitions, 7850 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:56:36,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 504 transitions, 9268 flow [2024-06-28 00:56:37,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 504 transitions, 9021 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:37,476 INFO L231 Difference]: Finished difference. Result has 414 places, 476 transitions, 7888 flow [2024-06-28 00:56:37,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7888, PETRI_PLACES=414, PETRI_TRANSITIONS=476} [2024-06-28 00:56:37,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-06-28 00:56:37,476 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 476 transitions, 7888 flow [2024-06-28 00:56:37,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:37,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:37,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:37,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:56:37,477 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:37,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:37,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1864469697, now seen corresponding path program 21 times [2024-06-28 00:56:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:37,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263659579] [2024-06-28 00:56:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263659579] [2024-06-28 00:56:38,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263659579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:38,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632695365] [2024-06-28 00:56:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:38,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:38,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:38,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 476 transitions, 7888 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:38,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:38,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:38,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:39,744 INFO L124 PetriNetUnfolderBase]: 2247/3894 cut-off events. [2024-06-28 00:56:39,744 INFO L125 PetriNetUnfolderBase]: For 199804/199804 co-relation queries the response was YES. [2024-06-28 00:56:39,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30016 conditions, 3894 events. 2247/3894 cut-off events. For 199804/199804 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24226 event pairs, 775 based on Foata normal form. 4/3725 useless extension candidates. Maximal degree in co-relation 29826. Up to 3616 conditions per place. [2024-06-28 00:56:39,803 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 470 selfloop transitions, 24 changer transitions 0/501 dead transitions. [2024-06-28 00:56:39,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 501 transitions, 9234 flow [2024-06-28 00:56:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:56:39,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803827751196172 [2024-06-28 00:56:39,804 INFO L175 Difference]: Start difference. First operand has 414 places, 476 transitions, 7888 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:56:39,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 501 transitions, 9234 flow [2024-06-28 00:56:40,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 501 transitions, 8932 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:40,897 INFO L231 Difference]: Finished difference. Result has 418 places, 478 transitions, 7734 flow [2024-06-28 00:56:40,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7586, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7734, PETRI_PLACES=418, PETRI_TRANSITIONS=478} [2024-06-28 00:56:40,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-28 00:56:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 478 transitions, 7734 flow [2024-06-28 00:56:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:40,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:56:40,898 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:40,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1864458785, now seen corresponding path program 5 times [2024-06-28 00:56:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761415253] [2024-06-28 00:56:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761415253] [2024-06-28 00:56:42,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761415253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:42,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:42,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:42,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376187975] [2024-06-28 00:56:42,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:42,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:42,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:42,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:42,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:42,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 478 transitions, 7734 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:42,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:42,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:42,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:43,346 INFO L124 PetriNetUnfolderBase]: 2279/3952 cut-off events. [2024-06-28 00:56:43,347 INFO L125 PetriNetUnfolderBase]: For 200563/200563 co-relation queries the response was YES. [2024-06-28 00:56:43,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29898 conditions, 3952 events. 2279/3952 cut-off events. For 200563/200563 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24709 event pairs, 779 based on Foata normal form. 4/3783 useless extension candidates. Maximal degree in co-relation 29706. Up to 3655 conditions per place. [2024-06-28 00:56:43,410 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 476 selfloop transitions, 21 changer transitions 0/504 dead transitions. [2024-06-28 00:56:43,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 504 transitions, 8952 flow [2024-06-28 00:56:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:56:43,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37799043062200954 [2024-06-28 00:56:43,440 INFO L175 Difference]: Start difference. First operand has 418 places, 478 transitions, 7734 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:56:43,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 504 transitions, 8952 flow [2024-06-28 00:56:44,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 504 transitions, 8852 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:56:44,617 INFO L231 Difference]: Finished difference. Result has 419 places, 480 transitions, 7784 flow [2024-06-28 00:56:44,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7634, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7784, PETRI_PLACES=419, PETRI_TRANSITIONS=480} [2024-06-28 00:56:44,617 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 00:56:44,617 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 480 transitions, 7784 flow [2024-06-28 00:56:44,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:44,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:44,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:44,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:56:44,620 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:44,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash 944886591, now seen corresponding path program 22 times [2024-06-28 00:56:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:44,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044211431] [2024-06-28 00:56:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044211431] [2024-06-28 00:56:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044211431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:45,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:45,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:45,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344786334] [2024-06-28 00:56:45,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:45,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:45,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:45,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 480 transitions, 7784 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:45,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:45,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:47,269 INFO L124 PetriNetUnfolderBase]: 2275/3939 cut-off events. [2024-06-28 00:56:47,270 INFO L125 PetriNetUnfolderBase]: For 186039/186042 co-relation queries the response was YES. [2024-06-28 00:56:47,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29618 conditions, 3939 events. 2275/3939 cut-off events. For 186039/186042 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 24446 event pairs, 407 based on Foata normal form. 2/3760 useless extension candidates. Maximal degree in co-relation 29425. Up to 3280 conditions per place. [2024-06-28 00:56:47,328 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 383 selfloop transitions, 114 changer transitions 0/504 dead transitions. [2024-06-28 00:56:47,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 504 transitions, 8880 flow [2024-06-28 00:56:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:56:47,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-28 00:56:47,332 INFO L175 Difference]: Start difference. First operand has 419 places, 480 transitions, 7784 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:56:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 504 transitions, 8880 flow [2024-06-28 00:56:48,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 504 transitions, 8671 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:48,470 INFO L231 Difference]: Finished difference. Result has 420 places, 480 transitions, 7808 flow [2024-06-28 00:56:48,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7575, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7808, PETRI_PLACES=420, PETRI_TRANSITIONS=480} [2024-06-28 00:56:48,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-28 00:56:48,471 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 480 transitions, 7808 flow [2024-06-28 00:56:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:48,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:48,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:48,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:56:48,474 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:48,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 953468383, now seen corresponding path program 6 times [2024-06-28 00:56:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107012325] [2024-06-28 00:56:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107012325] [2024-06-28 00:56:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107012325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:50,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:50,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274812290] [2024-06-28 00:56:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:50,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:50,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:50,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:50,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 480 transitions, 7808 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:50,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:50,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:50,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:51,559 INFO L124 PetriNetUnfolderBase]: 2307/4003 cut-off events. [2024-06-28 00:56:51,560 INFO L125 PetriNetUnfolderBase]: For 197863/197866 co-relation queries the response was YES. [2024-06-28 00:56:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30053 conditions, 4003 events. 2307/4003 cut-off events. For 197863/197866 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 25095 event pairs, 522 based on Foata normal form. 6/3829 useless extension candidates. Maximal degree in co-relation 29859. Up to 3335 conditions per place. [2024-06-28 00:56:51,617 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 417 selfloop transitions, 86 changer transitions 0/510 dead transitions. [2024-06-28 00:56:51,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 510 transitions, 9254 flow [2024-06-28 00:56:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 00:56:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:56:51,619 INFO L175 Difference]: Start difference. First operand has 420 places, 480 transitions, 7808 flow. Second operand 11 states and 171 transitions. [2024-06-28 00:56:51,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 510 transitions, 9254 flow [2024-06-28 00:56:52,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 510 transitions, 9016 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:52,694 INFO L231 Difference]: Finished difference. Result has 422 places, 482 transitions, 7853 flow [2024-06-28 00:56:52,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7570, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7853, PETRI_PLACES=422, PETRI_TRANSITIONS=482} [2024-06-28 00:56:52,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-28 00:56:52,695 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 482 transitions, 7853 flow [2024-06-28 00:56:52,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:52,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:52,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:56:52,695 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:52,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1864100735, now seen corresponding path program 7 times [2024-06-28 00:56:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672318822] [2024-06-28 00:56:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672318822] [2024-06-28 00:56:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672318822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:53,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635970556] [2024-06-28 00:56:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:53,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:53,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:53,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 482 transitions, 7853 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:53,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:53,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:54,934 INFO L124 PetriNetUnfolderBase]: 2320/4026 cut-off events. [2024-06-28 00:56:54,935 INFO L125 PetriNetUnfolderBase]: For 195576/195576 co-relation queries the response was YES. [2024-06-28 00:56:54,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30134 conditions, 4026 events. 2320/4026 cut-off events. For 195576/195576 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25243 event pairs, 792 based on Foata normal form. 4/3867 useless extension candidates. Maximal degree in co-relation 29939. Up to 3658 conditions per place. [2024-06-28 00:56:54,999 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 480 selfloop transitions, 24 changer transitions 0/511 dead transitions. [2024-06-28 00:56:54,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 511 transitions, 9125 flow [2024-06-28 00:56:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:56:55,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875598086124402 [2024-06-28 00:56:55,000 INFO L175 Difference]: Start difference. First operand has 422 places, 482 transitions, 7853 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:56:55,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 511 transitions, 9125 flow [2024-06-28 00:56:56,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 511 transitions, 8855 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:56,156 INFO L231 Difference]: Finished difference. Result has 424 places, 484 transitions, 7746 flow [2024-06-28 00:56:56,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7746, PETRI_PLACES=424, PETRI_TRANSITIONS=484} [2024-06-28 00:56:56,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-28 00:56:56,162 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 484 transitions, 7746 flow [2024-06-28 00:56:56,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:56,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:56,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:56:56,162 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:56:56,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1620412745, now seen corresponding path program 3 times [2024-06-28 00:56:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059164843] [2024-06-28 00:56:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059164843] [2024-06-28 00:56:58,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059164843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:58,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:58,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:58,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730883683] [2024-06-28 00:56:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:58,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:58,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:56:58,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 484 transitions, 7746 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:58,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:58,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:56:58,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:59,828 INFO L124 PetriNetUnfolderBase]: 2318/4022 cut-off events. [2024-06-28 00:56:59,829 INFO L125 PetriNetUnfolderBase]: For 176356/176359 co-relation queries the response was YES. [2024-06-28 00:56:59,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29594 conditions, 4022 events. 2318/4022 cut-off events. For 176356/176359 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25280 event pairs, 605 based on Foata normal form. 3/3843 useless extension candidates. Maximal degree in co-relation 29398. Up to 3689 conditions per place. [2024-06-28 00:56:59,890 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 450 selfloop transitions, 48 changer transitions 0/505 dead transitions. [2024-06-28 00:56:59,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 505 transitions, 8864 flow [2024-06-28 00:56:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:56:59,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868421052631579 [2024-06-28 00:56:59,891 INFO L175 Difference]: Start difference. First operand has 424 places, 484 transitions, 7746 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:56:59,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 505 transitions, 8864 flow [2024-06-28 00:57:01,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 505 transitions, 8709 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:01,113 INFO L231 Difference]: Finished difference. Result has 425 places, 484 transitions, 7695 flow [2024-06-28 00:57:01,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7591, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7695, PETRI_PLACES=425, PETRI_TRANSITIONS=484} [2024-06-28 00:57:01,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 383 predicate places. [2024-06-28 00:57:01,114 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 484 transitions, 7695 flow [2024-06-28 00:57:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:01,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:01,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:57:01,115 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:01,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1566074929, now seen corresponding path program 23 times [2024-06-28 00:57:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:01,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752686782] [2024-06-28 00:57:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752686782] [2024-06-28 00:57:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752686782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:02,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741862614] [2024-06-28 00:57:02,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:02,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:02,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:02,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 484 transitions, 7695 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:02,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:02,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:02,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:03,710 INFO L124 PetriNetUnfolderBase]: 2329/4033 cut-off events. [2024-06-28 00:57:03,710 INFO L125 PetriNetUnfolderBase]: For 182343/182346 co-relation queries the response was YES. [2024-06-28 00:57:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29648 conditions, 4033 events. 2329/4033 cut-off events. For 182343/182346 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 25188 event pairs, 517 based on Foata normal form. 2/3852 useless extension candidates. Maximal degree in co-relation 29451. Up to 3400 conditions per place. [2024-06-28 00:57:03,762 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 402 selfloop transitions, 107 changer transitions 0/516 dead transitions. [2024-06-28 00:57:03,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 516 transitions, 9246 flow [2024-06-28 00:57:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:57:03,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:57:03,763 INFO L175 Difference]: Start difference. First operand has 425 places, 484 transitions, 7695 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:57:03,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 516 transitions, 9246 flow [2024-06-28 00:57:04,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 516 transitions, 9025 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 00:57:04,838 INFO L231 Difference]: Finished difference. Result has 424 places, 487 transitions, 7882 flow [2024-06-28 00:57:04,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7476, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7882, PETRI_PLACES=424, PETRI_TRANSITIONS=487} [2024-06-28 00:57:04,838 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-28 00:57:04,838 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 487 transitions, 7882 flow [2024-06-28 00:57:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:04,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:04,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:57:04,839 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1620404065, now seen corresponding path program 24 times [2024-06-28 00:57:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553292988] [2024-06-28 00:57:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:06,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553292988] [2024-06-28 00:57:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553292988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:06,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:06,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759691275] [2024-06-28 00:57:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:06,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:06,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 487 transitions, 7882 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:06,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:06,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:06,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:07,353 INFO L124 PetriNetUnfolderBase]: 2325/4027 cut-off events. [2024-06-28 00:57:07,353 INFO L125 PetriNetUnfolderBase]: For 173352/173355 co-relation queries the response was YES. [2024-06-28 00:57:07,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29512 conditions, 4027 events. 2325/4027 cut-off events. For 173352/173355 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 25130 event pairs, 517 based on Foata normal form. 2/3846 useless extension candidates. Maximal degree in co-relation 29315. Up to 3397 conditions per place. [2024-06-28 00:57:07,407 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 403 selfloop transitions, 104 changer transitions 0/514 dead transitions. [2024-06-28 00:57:07,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 514 transitions, 9045 flow [2024-06-28 00:57:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:57:07,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 00:57:07,408 INFO L175 Difference]: Start difference. First operand has 424 places, 487 transitions, 7882 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:57:07,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 514 transitions, 9045 flow [2024-06-28 00:57:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 514 transitions, 8742 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:08,481 INFO L231 Difference]: Finished difference. Result has 427 places, 487 transitions, 7795 flow [2024-06-28 00:57:08,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7795, PETRI_PLACES=427, PETRI_TRANSITIONS=487} [2024-06-28 00:57:08,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-28 00:57:08,482 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 487 transitions, 7795 flow [2024-06-28 00:57:08,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:08,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:08,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:08,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:57:08,483 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:08,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1397656656, now seen corresponding path program 1 times [2024-06-28 00:57:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:08,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124038086] [2024-06-28 00:57:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:08,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124038086] [2024-06-28 00:57:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124038086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:09,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:09,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309364638] [2024-06-28 00:57:09,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:09,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:09,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:09,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:09,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 487 transitions, 7795 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:09,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:09,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:10,940 INFO L124 PetriNetUnfolderBase]: 2349/4083 cut-off events. [2024-06-28 00:57:10,941 INFO L125 PetriNetUnfolderBase]: For 172988/172988 co-relation queries the response was YES. [2024-06-28 00:57:10,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29872 conditions, 4083 events. 2349/4083 cut-off events. For 172988/172988 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25653 event pairs, 532 based on Foata normal form. 2/3905 useless extension candidates. Maximal degree in co-relation 29674. Up to 3530 conditions per place. [2024-06-28 00:57:10,997 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 444 selfloop transitions, 79 changer transitions 0/530 dead transitions. [2024-06-28 00:57:10,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 530 transitions, 9177 flow [2024-06-28 00:57:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:57:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:57:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-28 00:57:10,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048582995951417 [2024-06-28 00:57:10,999 INFO L175 Difference]: Start difference. First operand has 427 places, 487 transitions, 7795 flow. Second operand 13 states and 200 transitions. [2024-06-28 00:57:10,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 530 transitions, 9177 flow [2024-06-28 00:57:12,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 530 transitions, 8937 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:57:12,015 INFO L231 Difference]: Finished difference. Result has 431 places, 490 transitions, 7885 flow [2024-06-28 00:57:12,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7885, PETRI_PLACES=431, PETRI_TRANSITIONS=490} [2024-06-28 00:57:12,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-28 00:57:12,016 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 490 transitions, 7885 flow [2024-06-28 00:57:12,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:12,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:12,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:12,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:57:12,017 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:12,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1993120134, now seen corresponding path program 2 times [2024-06-28 00:57:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:12,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494559599] [2024-06-28 00:57:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494559599] [2024-06-28 00:57:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494559599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086080140] [2024-06-28 00:57:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:13,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:13,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:13,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 490 transitions, 7885 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:13,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:13,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:13,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:14,611 INFO L124 PetriNetUnfolderBase]: 2365/4112 cut-off events. [2024-06-28 00:57:14,611 INFO L125 PetriNetUnfolderBase]: For 175397/175397 co-relation queries the response was YES. [2024-06-28 00:57:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30163 conditions, 4112 events. 2365/4112 cut-off events. For 175397/175397 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 25876 event pairs, 606 based on Foata normal form. 2/3936 useless extension candidates. Maximal degree in co-relation 29964. Up to 3723 conditions per place. [2024-06-28 00:57:14,671 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 446 selfloop transitions, 69 changer transitions 0/522 dead transitions. [2024-06-28 00:57:14,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 522 transitions, 9157 flow [2024-06-28 00:57:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:57:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:57:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 190 transitions. [2024-06-28 00:57:14,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 00:57:14,673 INFO L175 Difference]: Start difference. First operand has 431 places, 490 transitions, 7885 flow. Second operand 13 states and 190 transitions. [2024-06-28 00:57:14,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 522 transitions, 9157 flow [2024-06-28 00:57:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 522 transitions, 8881 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:15,956 INFO L231 Difference]: Finished difference. Result has 435 places, 492 transitions, 7871 flow [2024-06-28 00:57:15,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7871, PETRI_PLACES=435, PETRI_TRANSITIONS=492} [2024-06-28 00:57:15,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-28 00:57:15,956 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 492 transitions, 7871 flow [2024-06-28 00:57:15,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:15,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:15,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:57:15,957 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:15,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1992347304, now seen corresponding path program 3 times [2024-06-28 00:57:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164851480] [2024-06-28 00:57:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164851480] [2024-06-28 00:57:16,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164851480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:16,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008444815] [2024-06-28 00:57:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:16,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:16,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:16,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 492 transitions, 7871 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:16,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:16,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:16,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:18,308 INFO L124 PetriNetUnfolderBase]: 2389/4161 cut-off events. [2024-06-28 00:57:18,309 INFO L125 PetriNetUnfolderBase]: For 181179/181179 co-relation queries the response was YES. [2024-06-28 00:57:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30382 conditions, 4161 events. 2389/4161 cut-off events. For 181179/181179 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26310 event pairs, 616 based on Foata normal form. 2/3983 useless extension candidates. Maximal degree in co-relation 30182. Up to 3731 conditions per place. [2024-06-28 00:57:18,373 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 458 selfloop transitions, 64 changer transitions 0/529 dead transitions. [2024-06-28 00:57:18,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 529 transitions, 9237 flow [2024-06-28 00:57:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:57:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:57:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 194 transitions. [2024-06-28 00:57:18,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39271255060728744 [2024-06-28 00:57:18,374 INFO L175 Difference]: Start difference. First operand has 435 places, 492 transitions, 7871 flow. Second operand 13 states and 194 transitions. [2024-06-28 00:57:18,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 529 transitions, 9237 flow [2024-06-28 00:57:19,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 529 transitions, 8997 flow, removed 54 selfloop flow, removed 11 redundant places. [2024-06-28 00:57:19,552 INFO L231 Difference]: Finished difference. Result has 438 places, 495 transitions, 7939 flow [2024-06-28 00:57:19,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7631, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7939, PETRI_PLACES=438, PETRI_TRANSITIONS=495} [2024-06-28 00:57:19,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 396 predicate places. [2024-06-28 00:57:19,552 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 495 transitions, 7939 flow [2024-06-28 00:57:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:19,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:19,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:19,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:57:19,553 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:19,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1997738514, now seen corresponding path program 4 times [2024-06-28 00:57:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:19,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632228642] [2024-06-28 00:57:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632228642] [2024-06-28 00:57:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632228642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:20,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:20,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:20,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23034441] [2024-06-28 00:57:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:20,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:20,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:20,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 495 transitions, 7939 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:21,981 INFO L124 PetriNetUnfolderBase]: 2429/4231 cut-off events. [2024-06-28 00:57:21,982 INFO L125 PetriNetUnfolderBase]: For 186112/186112 co-relation queries the response was YES. [2024-06-28 00:57:22,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30902 conditions, 4231 events. 2429/4231 cut-off events. For 186112/186112 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26835 event pairs, 640 based on Foata normal form. 2/4051 useless extension candidates. Maximal degree in co-relation 30700. Up to 3803 conditions per place. [2024-06-28 00:57:22,058 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 469 selfloop transitions, 61 changer transitions 0/537 dead transitions. [2024-06-28 00:57:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 537 transitions, 9364 flow [2024-06-28 00:57:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:57:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:57:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 195 transitions. [2024-06-28 00:57:22,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 00:57:22,059 INFO L175 Difference]: Start difference. First operand has 438 places, 495 transitions, 7939 flow. Second operand 13 states and 195 transitions. [2024-06-28 00:57:22,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 537 transitions, 9364 flow [2024-06-28 00:57:23,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 537 transitions, 9106 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:23,471 INFO L231 Difference]: Finished difference. Result has 444 places, 501 transitions, 8031 flow [2024-06-28 00:57:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7681, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8031, PETRI_PLACES=444, PETRI_TRANSITIONS=501} [2024-06-28 00:57:23,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-28 00:57:23,472 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 501 transitions, 8031 flow [2024-06-28 00:57:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:23,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:23,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:23,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:57:23,472 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:23,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1580219256, now seen corresponding path program 5 times [2024-06-28 00:57:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:23,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928409242] [2024-06-28 00:57:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:23,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928409242] [2024-06-28 00:57:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928409242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:24,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028727496] [2024-06-28 00:57:24,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:24,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:24,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:24,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 501 transitions, 8031 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:24,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:24,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:25,881 INFO L124 PetriNetUnfolderBase]: 2469/4316 cut-off events. [2024-06-28 00:57:25,881 INFO L125 PetriNetUnfolderBase]: For 190585/190585 co-relation queries the response was YES. [2024-06-28 00:57:25,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31337 conditions, 4316 events. 2469/4316 cut-off events. For 190585/190585 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 27523 event pairs, 487 based on Foata normal form. 2/4149 useless extension candidates. Maximal degree in co-relation 31132. Up to 3557 conditions per place. [2024-06-28 00:57:25,956 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 436 selfloop transitions, 103 changer transitions 0/546 dead transitions. [2024-06-28 00:57:25,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 546 transitions, 9481 flow [2024-06-28 00:57:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:57:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:57:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 00:57:25,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-06-28 00:57:25,957 INFO L175 Difference]: Start difference. First operand has 444 places, 501 transitions, 8031 flow. Second operand 12 states and 188 transitions. [2024-06-28 00:57:25,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 546 transitions, 9481 flow [2024-06-28 00:57:27,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 546 transitions, 9227 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:27,266 INFO L231 Difference]: Finished difference. Result has 449 places, 507 transitions, 8202 flow [2024-06-28 00:57:27,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7777, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8202, PETRI_PLACES=449, PETRI_TRANSITIONS=507} [2024-06-28 00:57:27,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-28 00:57:27,277 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 507 transitions, 8202 flow [2024-06-28 00:57:27,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:27,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:27,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:27,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:57:27,277 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:27,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1465803747, now seen corresponding path program 1 times [2024-06-28 00:57:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848937530] [2024-06-28 00:57:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848937530] [2024-06-28 00:57:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848937530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854256287] [2024-06-28 00:57:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:28,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:28,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 507 transitions, 8202 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:28,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:28,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:29,925 INFO L124 PetriNetUnfolderBase]: 2479/4334 cut-off events. [2024-06-28 00:57:29,925 INFO L125 PetriNetUnfolderBase]: For 188280/188280 co-relation queries the response was YES. [2024-06-28 00:57:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31600 conditions, 4334 events. 2479/4334 cut-off events. For 188280/188280 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27672 event pairs, 675 based on Foata normal form. 1/4148 useless extension candidates. Maximal degree in co-relation 31393. Up to 3940 conditions per place. [2024-06-28 00:57:29,994 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 465 selfloop transitions, 69 changer transitions 0/541 dead transitions. [2024-06-28 00:57:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 541 transitions, 9567 flow [2024-06-28 00:57:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:57:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:57:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 188 transitions. [2024-06-28 00:57:29,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805668016194332 [2024-06-28 00:57:29,995 INFO L175 Difference]: Start difference. First operand has 449 places, 507 transitions, 8202 flow. Second operand 13 states and 188 transitions. [2024-06-28 00:57:29,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 541 transitions, 9567 flow [2024-06-28 00:57:31,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 541 transitions, 9240 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:31,467 INFO L231 Difference]: Finished difference. Result has 454 places, 513 transitions, 8242 flow [2024-06-28 00:57:31,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7881, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8242, PETRI_PLACES=454, PETRI_TRANSITIONS=513} [2024-06-28 00:57:31,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-28 00:57:31,468 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 513 transitions, 8242 flow [2024-06-28 00:57:31,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:31,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:31,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:31,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:57:31,468 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:31,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1292091558, now seen corresponding path program 1 times [2024-06-28 00:57:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462244946] [2024-06-28 00:57:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462244946] [2024-06-28 00:57:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462244946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797661879] [2024-06-28 00:57:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:33,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:33,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 513 transitions, 8242 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:34,600 INFO L124 PetriNetUnfolderBase]: 2492/4352 cut-off events. [2024-06-28 00:57:34,601 INFO L125 PetriNetUnfolderBase]: For 189512/189512 co-relation queries the response was YES. [2024-06-28 00:57:34,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31388 conditions, 4352 events. 2492/4352 cut-off events. For 189512/189512 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27797 event pairs, 678 based on Foata normal form. 2/4162 useless extension candidates. Maximal degree in co-relation 31180. Up to 3970 conditions per place. [2024-06-28 00:57:34,677 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 482 selfloop transitions, 57 changer transitions 0/546 dead transitions. [2024-06-28 00:57:34,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 546 transitions, 9520 flow [2024-06-28 00:57:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:57:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:57:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 201 transitions. [2024-06-28 00:57:34,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37781954887218044 [2024-06-28 00:57:34,678 INFO L175 Difference]: Start difference. First operand has 454 places, 513 transitions, 8242 flow. Second operand 14 states and 201 transitions. [2024-06-28 00:57:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 546 transitions, 9520 flow [2024-06-28 00:57:36,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 546 transitions, 9344 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 00:57:36,158 INFO L231 Difference]: Finished difference. Result has 458 places, 515 transitions, 8276 flow [2024-06-28 00:57:36,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8066, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8276, PETRI_PLACES=458, PETRI_TRANSITIONS=515} [2024-06-28 00:57:36,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 00:57:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 515 transitions, 8276 flow [2024-06-28 00:57:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:36,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:36,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:36,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:57:36,159 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:36,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1036592574, now seen corresponding path program 6 times [2024-06-28 00:57:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572455979] [2024-06-28 00:57:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572455979] [2024-06-28 00:57:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572455979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:37,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:37,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:37,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954728082] [2024-06-28 00:57:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:37,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:37,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 515 transitions, 8276 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:37,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:37,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:37,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:38,677 INFO L124 PetriNetUnfolderBase]: 2518/4392 cut-off events. [2024-06-28 00:57:38,677 INFO L125 PetriNetUnfolderBase]: For 196516/196516 co-relation queries the response was YES. [2024-06-28 00:57:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31775 conditions, 4392 events. 2518/4392 cut-off events. For 196516/196516 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28034 event pairs, 641 based on Foata normal form. 2/4199 useless extension candidates. Maximal degree in co-relation 31566. Up to 4010 conditions per place. [2024-06-28 00:57:38,743 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 480 selfloop transitions, 59 changer transitions 0/546 dead transitions. [2024-06-28 00:57:38,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 546 transitions, 9608 flow [2024-06-28 00:57:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 00:57:38,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-28 00:57:38,745 INFO L175 Difference]: Start difference. First operand has 458 places, 515 transitions, 8276 flow. Second operand 11 states and 168 transitions. [2024-06-28 00:57:38,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 546 transitions, 9608 flow [2024-06-28 00:57:40,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 546 transitions, 9438 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-28 00:57:40,182 INFO L231 Difference]: Finished difference. Result has 458 places, 519 transitions, 8378 flow [2024-06-28 00:57:40,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8106, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8378, PETRI_PLACES=458, PETRI_TRANSITIONS=519} [2024-06-28 00:57:40,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 00:57:40,182 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 519 transitions, 8378 flow [2024-06-28 00:57:40,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:40,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:40,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:40,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:57:40,183 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:40,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1868846578, now seen corresponding path program 7 times [2024-06-28 00:57:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:40,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325566264] [2024-06-28 00:57:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:41,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:41,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325566264] [2024-06-28 00:57:41,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325566264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:41,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:41,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158724001] [2024-06-28 00:57:41,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:41,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:41,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:41,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:41,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 519 transitions, 8378 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:41,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:41,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:42,792 INFO L124 PetriNetUnfolderBase]: 2560/4482 cut-off events. [2024-06-28 00:57:42,792 INFO L125 PetriNetUnfolderBase]: For 205525/205525 co-relation queries the response was YES. [2024-06-28 00:57:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32468 conditions, 4482 events. 2560/4482 cut-off events. For 205525/205525 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 28844 event pairs, 645 based on Foata normal form. 2/4285 useless extension candidates. Maximal degree in co-relation 32258. Up to 4040 conditions per place. [2024-06-28 00:57:42,857 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 494 selfloop transitions, 55 changer transitions 0/556 dead transitions. [2024-06-28 00:57:42,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 556 transitions, 9824 flow [2024-06-28 00:57:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:57:42,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 00:57:42,858 INFO L175 Difference]: Start difference. First operand has 458 places, 519 transitions, 8378 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:57:42,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 556 transitions, 9824 flow [2024-06-28 00:57:44,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 556 transitions, 9594 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:44,254 INFO L231 Difference]: Finished difference. Result has 461 places, 525 transitions, 8486 flow [2024-06-28 00:57:44,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8148, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8486, PETRI_PLACES=461, PETRI_TRANSITIONS=525} [2024-06-28 00:57:44,255 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-28 00:57:44,255 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 525 transitions, 8486 flow [2024-06-28 00:57:44,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:44,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:44,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:57:44,256 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:44,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1036442844, now seen corresponding path program 8 times [2024-06-28 00:57:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164445261] [2024-06-28 00:57:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164445261] [2024-06-28 00:57:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164445261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486362920] [2024-06-28 00:57:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:45,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:45,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:45,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 525 transitions, 8486 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:45,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:45,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:45,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:46,976 INFO L124 PetriNetUnfolderBase]: 2628/4618 cut-off events. [2024-06-28 00:57:46,976 INFO L125 PetriNetUnfolderBase]: For 213029/213029 co-relation queries the response was YES. [2024-06-28 00:57:47,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33314 conditions, 4618 events. 2628/4618 cut-off events. For 213029/213029 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30036 event pairs, 669 based on Foata normal form. 2/4418 useless extension candidates. Maximal degree in co-relation 33102. Up to 4133 conditions per place. [2024-06-28 00:57:47,041 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 504 selfloop transitions, 55 changer transitions 0/566 dead transitions. [2024-06-28 00:57:47,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 566 transitions, 9981 flow [2024-06-28 00:57:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 00:57:47,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-28 00:57:47,042 INFO L175 Difference]: Start difference. First operand has 461 places, 525 transitions, 8486 flow. Second operand 11 states and 173 transitions. [2024-06-28 00:57:47,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 566 transitions, 9981 flow [2024-06-28 00:57:48,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 566 transitions, 9734 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:48,632 INFO L231 Difference]: Finished difference. Result has 466 places, 533 transitions, 8601 flow [2024-06-28 00:57:48,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8239, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8601, PETRI_PLACES=466, PETRI_TRANSITIONS=533} [2024-06-28 00:57:48,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-28 00:57:48,632 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 533 transitions, 8601 flow [2024-06-28 00:57:48,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:48,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:48,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:48,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:57:48,633 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:48,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 978350394, now seen corresponding path program 9 times [2024-06-28 00:57:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780177660] [2024-06-28 00:57:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:49,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:49,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780177660] [2024-06-28 00:57:49,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780177660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:49,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:49,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458448603] [2024-06-28 00:57:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:49,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:49,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 533 transitions, 8601 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:49,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:49,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:51,500 INFO L124 PetriNetUnfolderBase]: 2687/4746 cut-off events. [2024-06-28 00:57:51,501 INFO L125 PetriNetUnfolderBase]: For 219384/219384 co-relation queries the response was YES. [2024-06-28 00:57:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34028 conditions, 4746 events. 2687/4746 cut-off events. For 219384/219384 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31166 event pairs, 660 based on Foata normal form. 2/4536 useless extension candidates. Maximal degree in co-relation 33814. Up to 4136 conditions per place. [2024-06-28 00:57:51,571 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 499 selfloop transitions, 73 changer transitions 0/579 dead transitions. [2024-06-28 00:57:51,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 579 transitions, 10159 flow [2024-06-28 00:57:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:57:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:57:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 00:57:51,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-28 00:57:51,573 INFO L175 Difference]: Start difference. First operand has 466 places, 533 transitions, 8601 flow. Second operand 12 states and 189 transitions. [2024-06-28 00:57:51,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 579 transitions, 10159 flow [2024-06-28 00:57:53,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 579 transitions, 9906 flow, removed 87 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:53,466 INFO L231 Difference]: Finished difference. Result has 472 places, 542 transitions, 8774 flow [2024-06-28 00:57:53,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8348, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8774, PETRI_PLACES=472, PETRI_TRANSITIONS=542} [2024-06-28 00:57:53,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-28 00:57:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 542 transitions, 8774 flow [2024-06-28 00:57:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:53,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:53,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:53,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:57:53,467 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:53,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash -570928395, now seen corresponding path program 2 times [2024-06-28 00:57:53,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956927423] [2024-06-28 00:57:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:53,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956927423] [2024-06-28 00:57:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956927423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:54,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:57:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996664061] [2024-06-28 00:57:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:57:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:57:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:57:54,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:57:54,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 542 transitions, 8774 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:54,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:54,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:57:54,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:56,613 INFO L124 PetriNetUnfolderBase]: 2687/4746 cut-off events. [2024-06-28 00:57:56,614 INFO L125 PetriNetUnfolderBase]: For 206474/206474 co-relation queries the response was YES. [2024-06-28 00:57:56,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33759 conditions, 4746 events. 2687/4746 cut-off events. For 206474/206474 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31134 event pairs, 752 based on Foata normal form. 1/4534 useless extension candidates. Maximal degree in co-relation 33543. Up to 4333 conditions per place. [2024-06-28 00:57:56,695 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 499 selfloop transitions, 63 changer transitions 0/569 dead transitions. [2024-06-28 00:57:56,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 569 transitions, 10020 flow [2024-06-28 00:57:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:57:56,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-06-28 00:57:56,696 INFO L175 Difference]: Start difference. First operand has 472 places, 542 transitions, 8774 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:57:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 569 transitions, 10020 flow [2024-06-28 00:57:58,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 569 transitions, 9680 flow, removed 108 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:58,493 INFO L231 Difference]: Finished difference. Result has 474 places, 544 transitions, 8610 flow [2024-06-28 00:57:58,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8434, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8610, PETRI_PLACES=474, PETRI_TRANSITIONS=544} [2024-06-28 00:57:58,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-28 00:57:58,494 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 544 transitions, 8610 flow [2024-06-28 00:57:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:58,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:58,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:57:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:57:58,494 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:57:58,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash -565356486, now seen corresponding path program 2 times [2024-06-28 00:57:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:58,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762292535] [2024-06-28 00:57:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:58,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:00,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:00,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762292535] [2024-06-28 00:58:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762292535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586300862] [2024-06-28 00:58:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:00,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:00,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:00,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 544 transitions, 8610 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:00,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:00,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:00,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:01,849 INFO L124 PetriNetUnfolderBase]: 2705/4772 cut-off events. [2024-06-28 00:58:01,849 INFO L125 PetriNetUnfolderBase]: For 207637/207637 co-relation queries the response was YES. [2024-06-28 00:58:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33497 conditions, 4772 events. 2705/4772 cut-off events. For 207637/207637 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 31309 event pairs, 752 based on Foata normal form. 2/4555 useless extension candidates. Maximal degree in co-relation 33280. Up to 4370 conditions per place. [2024-06-28 00:58:01,929 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 518 selfloop transitions, 48 changer transitions 0/573 dead transitions. [2024-06-28 00:58:01,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 573 transitions, 9942 flow [2024-06-28 00:58:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:58:01,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-28 00:58:01,930 INFO L175 Difference]: Start difference. First operand has 474 places, 544 transitions, 8610 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:58:01,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 573 transitions, 9942 flow [2024-06-28 00:58:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 573 transitions, 9779 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:03,840 INFO L231 Difference]: Finished difference. Result has 475 places, 548 transitions, 8671 flow [2024-06-28 00:58:03,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8447, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8671, PETRI_PLACES=475, PETRI_TRANSITIONS=548} [2024-06-28 00:58:03,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 00:58:03,847 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 548 transitions, 8671 flow [2024-06-28 00:58:03,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:03,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:03,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:58:03,847 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1445263938, now seen corresponding path program 10 times [2024-06-28 00:58:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030346010] [2024-06-28 00:58:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:04,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:04,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030346010] [2024-06-28 00:58:04,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030346010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:04,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:04,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976406544] [2024-06-28 00:58:04,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:04,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:04,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 548 transitions, 8671 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:04,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:04,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:04,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:06,491 INFO L124 PetriNetUnfolderBase]: 2721/4801 cut-off events. [2024-06-28 00:58:06,491 INFO L125 PetriNetUnfolderBase]: For 216125/216125 co-relation queries the response was YES. [2024-06-28 00:58:06,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33926 conditions, 4801 events. 2721/4801 cut-off events. For 216125/216125 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 31557 event pairs, 733 based on Foata normal form. 2/4585 useless extension candidates. Maximal degree in co-relation 33708. Up to 4292 conditions per place. [2024-06-28 00:58:06,566 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 481 selfloop transitions, 90 changer transitions 0/578 dead transitions. [2024-06-28 00:58:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 578 transitions, 10083 flow [2024-06-28 00:58:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:58:06,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 00:58:06,568 INFO L175 Difference]: Start difference. First operand has 475 places, 548 transitions, 8671 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:58:06,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 578 transitions, 10083 flow [2024-06-28 00:58:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 578 transitions, 9925 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:08,469 INFO L231 Difference]: Finished difference. Result has 478 places, 550 transitions, 8846 flow [2024-06-28 00:58:08,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8513, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8846, PETRI_PLACES=478, PETRI_TRANSITIONS=550} [2024-06-28 00:58:08,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-28 00:58:08,469 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 550 transitions, 8846 flow [2024-06-28 00:58:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:08,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:08,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:08,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:58:08,470 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:08,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1445269518, now seen corresponding path program 11 times [2024-06-28 00:58:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788234116] [2024-06-28 00:58:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788234116] [2024-06-28 00:58:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788234116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:09,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540886692] [2024-06-28 00:58:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:09,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:09,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 550 transitions, 8846 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:09,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:09,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:09,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:11,122 INFO L124 PetriNetUnfolderBase]: 2745/4851 cut-off events. [2024-06-28 00:58:11,123 INFO L125 PetriNetUnfolderBase]: For 223764/223764 co-relation queries the response was YES. [2024-06-28 00:58:11,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34626 conditions, 4851 events. 2745/4851 cut-off events. For 223764/223764 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 31988 event pairs, 735 based on Foata normal form. 2/4633 useless extension candidates. Maximal degree in co-relation 34407. Up to 4309 conditions per place. [2024-06-28 00:58:11,198 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 488 selfloop transitions, 90 changer transitions 0/585 dead transitions. [2024-06-28 00:58:11,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 585 transitions, 10364 flow [2024-06-28 00:58:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 00:58:11,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:58:11,199 INFO L175 Difference]: Start difference. First operand has 478 places, 550 transitions, 8846 flow. Second operand 11 states and 176 transitions. [2024-06-28 00:58:11,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 585 transitions, 10364 flow [2024-06-28 00:58:13,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 585 transitions, 10040 flow, removed 72 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:13,065 INFO L231 Difference]: Finished difference. Result has 480 places, 553 transitions, 8921 flow [2024-06-28 00:58:13,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8522, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8921, PETRI_PLACES=480, PETRI_TRANSITIONS=553} [2024-06-28 00:58:13,066 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 00:58:13,066 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 553 transitions, 8921 flow [2024-06-28 00:58:13,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:13,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:13,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:13,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:58:13,067 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:13,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1445413668, now seen corresponding path program 12 times [2024-06-28 00:58:13,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:13,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464404851] [2024-06-28 00:58:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:13,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464404851] [2024-06-28 00:58:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464404851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:14,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333816566] [2024-06-28 00:58:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:14,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 553 transitions, 8921 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:15,881 INFO L124 PetriNetUnfolderBase]: 2769/4902 cut-off events. [2024-06-28 00:58:15,881 INFO L125 PetriNetUnfolderBase]: For 231673/231673 co-relation queries the response was YES. [2024-06-28 00:58:15,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35082 conditions, 4902 events. 2769/4902 cut-off events. For 231673/231673 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32425 event pairs, 734 based on Foata normal form. 2/4681 useless extension candidates. Maximal degree in co-relation 34862. Up to 4345 conditions per place. [2024-06-28 00:58:15,951 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 492 selfloop transitions, 90 changer transitions 0/589 dead transitions. [2024-06-28 00:58:15,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 589 transitions, 10457 flow [2024-06-28 00:58:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 00:58:15,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 00:58:15,953 INFO L175 Difference]: Start difference. First operand has 480 places, 553 transitions, 8921 flow. Second operand 11 states and 177 transitions. [2024-06-28 00:58:15,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 589 transitions, 10457 flow [2024-06-28 00:58:17,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 589 transitions, 10088 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:17,964 INFO L231 Difference]: Finished difference. Result has 484 places, 556 transitions, 8957 flow [2024-06-28 00:58:17,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8552, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8957, PETRI_PLACES=484, PETRI_TRANSITIONS=556} [2024-06-28 00:58:17,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-28 00:58:17,965 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 556 transitions, 8957 flow [2024-06-28 00:58:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:17,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:17,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:58:17,965 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1439691812, now seen corresponding path program 3 times [2024-06-28 00:58:17,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:17,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020080718] [2024-06-28 00:58:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020080718] [2024-06-28 00:58:19,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020080718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267457917] [2024-06-28 00:58:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:19,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:19,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:19,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:19,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 556 transitions, 8957 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:19,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:19,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:19,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:21,059 INFO L124 PetriNetUnfolderBase]: 2782/4921 cut-off events. [2024-06-28 00:58:21,060 INFO L125 PetriNetUnfolderBase]: For 229048/229048 co-relation queries the response was YES. [2024-06-28 00:58:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34832 conditions, 4921 events. 2782/4921 cut-off events. For 229048/229048 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32581 event pairs, 759 based on Foata normal form. 2/4696 useless extension candidates. Maximal degree in co-relation 34610. Up to 4391 conditions per place. [2024-06-28 00:58:21,146 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 488 selfloop transitions, 92 changer transitions 0/587 dead transitions. [2024-06-28 00:58:21,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 587 transitions, 10297 flow [2024-06-28 00:58:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 00:58:21,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-06-28 00:58:21,148 INFO L175 Difference]: Start difference. First operand has 484 places, 556 transitions, 8957 flow. Second operand 12 states and 183 transitions. [2024-06-28 00:58:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 587 transitions, 10297 flow [2024-06-28 00:58:23,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 587 transitions, 9922 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:23,025 INFO L231 Difference]: Finished difference. Result has 488 places, 558 transitions, 8845 flow [2024-06-28 00:58:23,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8582, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8845, PETRI_PLACES=488, PETRI_TRANSITIONS=558} [2024-06-28 00:58:23,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-28 00:58:23,025 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 558 transitions, 8845 flow [2024-06-28 00:58:23,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:23,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:23,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:23,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:58:23,026 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:23,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1311992792, now seen corresponding path program 13 times [2024-06-28 00:58:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:23,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711334022] [2024-06-28 00:58:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711334022] [2024-06-28 00:58:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711334022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049164024] [2024-06-28 00:58:24,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:24,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:24,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:24,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 558 transitions, 8845 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:24,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:24,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:24,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:25,735 INFO L124 PetriNetUnfolderBase]: 2798/4950 cut-off events. [2024-06-28 00:58:25,735 INFO L125 PetriNetUnfolderBase]: For 229775/229775 co-relation queries the response was YES. [2024-06-28 00:58:25,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34803 conditions, 4950 events. 2798/4950 cut-off events. For 229775/229775 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32792 event pairs, 731 based on Foata normal form. 2/4725 useless extension candidates. Maximal degree in co-relation 34580. Up to 4268 conditions per place. [2024-06-28 00:58:25,814 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 460 selfloop transitions, 124 changer transitions 0/591 dead transitions. [2024-06-28 00:58:25,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 591 transitions, 10315 flow [2024-06-28 00:58:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 00:58:25,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:58:25,816 INFO L175 Difference]: Start difference. First operand has 488 places, 558 transitions, 8845 flow. Second operand 11 states and 176 transitions. [2024-06-28 00:58:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 591 transitions, 10315 flow [2024-06-28 00:58:27,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 591 transitions, 10084 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:27,825 INFO L231 Difference]: Finished difference. Result has 489 places, 560 transitions, 9027 flow [2024-06-28 00:58:27,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8614, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9027, PETRI_PLACES=489, PETRI_TRANSITIONS=560} [2024-06-28 00:58:27,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-28 00:58:27,826 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 560 transitions, 9027 flow [2024-06-28 00:58:27,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:27,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:27,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:58:27,827 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:27,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1312000728, now seen corresponding path program 4 times [2024-06-28 00:58:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798458190] [2024-06-28 00:58:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:27,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:29,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798458190] [2024-06-28 00:58:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798458190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:29,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:29,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762173805] [2024-06-28 00:58:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:29,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:29,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 560 transitions, 9027 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:29,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:29,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:31,071 INFO L124 PetriNetUnfolderBase]: 2811/4969 cut-off events. [2024-06-28 00:58:31,072 INFO L125 PetriNetUnfolderBase]: For 235146/235146 co-relation queries the response was YES. [2024-06-28 00:58:31,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35158 conditions, 4969 events. 2811/4969 cut-off events. For 235146/235146 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 32954 event pairs, 731 based on Foata normal form. 2/4740 useless extension candidates. Maximal degree in co-relation 34934. Up to 4182 conditions per place. [2024-06-28 00:58:31,161 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 449 selfloop transitions, 138 changer transitions 0/594 dead transitions. [2024-06-28 00:58:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 594 transitions, 10423 flow [2024-06-28 00:58:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 00:58:31,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-28 00:58:31,162 INFO L175 Difference]: Start difference. First operand has 489 places, 560 transitions, 9027 flow. Second operand 12 states and 189 transitions. [2024-06-28 00:58:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 594 transitions, 10423 flow [2024-06-28 00:58:33,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 594 transitions, 10026 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-28 00:58:33,037 INFO L231 Difference]: Finished difference. Result has 492 places, 562 transitions, 9007 flow [2024-06-28 00:58:33,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8630, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9007, PETRI_PLACES=492, PETRI_TRANSITIONS=562} [2024-06-28 00:58:33,038 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-28 00:58:33,038 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 562 transitions, 9007 flow [2024-06-28 00:58:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:33,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:33,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:33,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:58:33,038 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:33,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1238333792, now seen corresponding path program 5 times [2024-06-28 00:58:33,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092628497] [2024-06-28 00:58:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092628497] [2024-06-28 00:58:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092628497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:34,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:34,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789711034] [2024-06-28 00:58:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:34,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:34,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 562 transitions, 9007 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:34,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:34,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:34,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:36,206 INFO L124 PetriNetUnfolderBase]: 2841/5013 cut-off events. [2024-06-28 00:58:36,206 INFO L125 PetriNetUnfolderBase]: For 249290/249290 co-relation queries the response was YES. [2024-06-28 00:58:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35696 conditions, 5013 events. 2841/5013 cut-off events. For 249290/249290 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33189 event pairs, 731 based on Foata normal form. 2/4778 useless extension candidates. Maximal degree in co-relation 35471. Up to 4124 conditions per place. [2024-06-28 00:58:36,292 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 434 selfloop transitions, 160 changer transitions 0/601 dead transitions. [2024-06-28 00:58:36,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 601 transitions, 10761 flow [2024-06-28 00:58:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 00:58:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:58:36,293 INFO L175 Difference]: Start difference. First operand has 492 places, 562 transitions, 9007 flow. Second operand 12 states and 192 transitions. [2024-06-28 00:58:36,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 601 transitions, 10761 flow [2024-06-28 00:58:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 601 transitions, 10412 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:38,289 INFO L231 Difference]: Finished difference. Result has 494 places, 566 transitions, 9180 flow [2024-06-28 00:58:38,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8658, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9180, PETRI_PLACES=494, PETRI_TRANSITIONS=566} [2024-06-28 00:58:38,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-28 00:58:38,289 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 566 transitions, 9180 flow [2024-06-28 00:58:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:38,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:38,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:38,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:58:38,290 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:38,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1238333451, now seen corresponding path program 1 times [2024-06-28 00:58:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707619378] [2024-06-28 00:58:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:38,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:39,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:39,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707619378] [2024-06-28 00:58:39,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707619378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:39,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:39,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333181279] [2024-06-28 00:58:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:39,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:39,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:39,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:39,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 566 transitions, 9180 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:39,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:39,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:39,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:41,393 INFO L124 PetriNetUnfolderBase]: 2857/5046 cut-off events. [2024-06-28 00:58:41,393 INFO L125 PetriNetUnfolderBase]: For 254656/254656 co-relation queries the response was YES. [2024-06-28 00:58:41,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36064 conditions, 5046 events. 2857/5046 cut-off events. For 254656/254656 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33577 event pairs, 928 based on Foata normal form. 2/4814 useless extension candidates. Maximal degree in co-relation 35838. Up to 4564 conditions per place. [2024-06-28 00:58:41,477 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 534 selfloop transitions, 57 changer transitions 0/598 dead transitions. [2024-06-28 00:58:41,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 598 transitions, 10652 flow [2024-06-28 00:58:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 00:58:41,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 00:58:41,479 INFO L175 Difference]: Start difference. First operand has 494 places, 566 transitions, 9180 flow. Second operand 12 states and 180 transitions. [2024-06-28 00:58:41,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 598 transitions, 10652 flow [2024-06-28 00:58:43,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 598 transitions, 10362 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:43,590 INFO L231 Difference]: Finished difference. Result has 498 places, 568 transitions, 9152 flow [2024-06-28 00:58:43,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8890, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9152, PETRI_PLACES=498, PETRI_TRANSITIONS=568} [2024-06-28 00:58:43,590 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-06-28 00:58:43,590 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 568 transitions, 9152 flow [2024-06-28 00:58:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:43,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:43,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:58:43,591 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:43,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1245962148, now seen corresponding path program 14 times [2024-06-28 00:58:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880738206] [2024-06-28 00:58:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880738206] [2024-06-28 00:58:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880738206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110248654] [2024-06-28 00:58:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:44,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:44,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 568 transitions, 9152 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:44,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:44,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:44,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:46,483 INFO L124 PetriNetUnfolderBase]: 2873/5070 cut-off events. [2024-06-28 00:58:46,483 INFO L125 PetriNetUnfolderBase]: For 261010/261010 co-relation queries the response was YES. [2024-06-28 00:58:46,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36424 conditions, 5070 events. 2873/5070 cut-off events. For 261010/261010 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 33672 event pairs, 747 based on Foata normal form. 2/4835 useless extension candidates. Maximal degree in co-relation 36196. Up to 4471 conditions per place. [2024-06-28 00:58:46,567 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 487 selfloop transitions, 106 changer transitions 0/600 dead transitions. [2024-06-28 00:58:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 600 transitions, 10638 flow [2024-06-28 00:58:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 00:58:46,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-06-28 00:58:46,569 INFO L175 Difference]: Start difference. First operand has 498 places, 568 transitions, 9152 flow. Second operand 11 states and 174 transitions. [2024-06-28 00:58:46,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 600 transitions, 10638 flow [2024-06-28 00:58:48,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 600 transitions, 10402 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:48,654 INFO L231 Difference]: Finished difference. Result has 499 places, 570 transitions, 9299 flow [2024-06-28 00:58:48,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8916, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9299, PETRI_PLACES=499, PETRI_TRANSITIONS=570} [2024-06-28 00:58:48,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-28 00:58:48,655 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 570 transitions, 9299 flow [2024-06-28 00:58:48,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:48,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:48,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:58:48,656 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:48,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1245752402, now seen corresponding path program 6 times [2024-06-28 00:58:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:48,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023091866] [2024-06-28 00:58:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023091866] [2024-06-28 00:58:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023091866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286043330] [2024-06-28 00:58:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:49,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:49,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:50,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:50,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 570 transitions, 9299 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:50,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:50,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:50,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:51,700 INFO L124 PetriNetUnfolderBase]: 2886/5089 cut-off events. [2024-06-28 00:58:51,700 INFO L125 PetriNetUnfolderBase]: For 264648/264648 co-relation queries the response was YES. [2024-06-28 00:58:51,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36654 conditions, 5089 events. 2886/5089 cut-off events. For 264648/264648 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 33833 event pairs, 747 based on Foata normal form. 2/4850 useless extension candidates. Maximal degree in co-relation 36425. Up to 4482 conditions per place. [2024-06-28 00:58:51,787 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 488 selfloop transitions, 108 changer transitions 0/603 dead transitions. [2024-06-28 00:58:51,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 603 transitions, 10701 flow [2024-06-28 00:58:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 00:58:51,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-28 00:58:51,788 INFO L175 Difference]: Start difference. First operand has 499 places, 570 transitions, 9299 flow. Second operand 12 states and 185 transitions. [2024-06-28 00:58:51,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 603 transitions, 10701 flow [2024-06-28 00:58:54,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 603 transitions, 10334 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-28 00:58:54,184 INFO L231 Difference]: Finished difference. Result has 502 places, 572 transitions, 9245 flow [2024-06-28 00:58:54,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8932, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9245, PETRI_PLACES=502, PETRI_TRANSITIONS=572} [2024-06-28 00:58:54,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-28 00:58:54,186 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 572 transitions, 9245 flow [2024-06-28 00:58:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:54,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:54,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:58:54,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:58:54,187 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:58:54,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1238343092, now seen corresponding path program 7 times [2024-06-28 00:58:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977712809] [2024-06-28 00:58:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977712809] [2024-06-28 00:58:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977712809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:58:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122829691] [2024-06-28 00:58:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:58:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:58:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:58:56,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:58:56,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 572 transitions, 9245 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:56,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:56,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:58:56,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:58,146 INFO L124 PetriNetUnfolderBase]: 2891/5096 cut-off events. [2024-06-28 00:58:58,146 INFO L125 PetriNetUnfolderBase]: For 256084/256084 co-relation queries the response was YES. [2024-06-28 00:58:58,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36364 conditions, 5096 events. 2891/5096 cut-off events. For 256084/256084 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 33868 event pairs, 741 based on Foata normal form. 2/4855 useless extension candidates. Maximal degree in co-relation 36134. Up to 4199 conditions per place. [2024-06-28 00:58:58,231 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 446 selfloop transitions, 155 changer transitions 0/608 dead transitions. [2024-06-28 00:58:58,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 608 transitions, 10913 flow [2024-06-28 00:58:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 00:58:58,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:58:58,233 INFO L175 Difference]: Start difference. First operand has 502 places, 572 transitions, 9245 flow. Second operand 12 states and 192 transitions. [2024-06-28 00:58:58,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 608 transitions, 10913 flow [2024-06-28 00:59:00,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 608 transitions, 10632 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 00:59:00,498 INFO L231 Difference]: Finished difference. Result has 504 places, 574 transitions, 9371 flow [2024-06-28 00:59:00,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8964, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9371, PETRI_PLACES=504, PETRI_TRANSITIONS=574} [2024-06-28 00:59:00,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 462 predicate places. [2024-06-28 00:59:00,499 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 574 transitions, 9371 flow [2024-06-28 00:59:00,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:00,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:00,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:59:00,499 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:00,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1245967728, now seen corresponding path program 15 times [2024-06-28 00:59:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064658301] [2024-06-28 00:59:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:01,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064658301] [2024-06-28 00:59:01,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064658301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171642571] [2024-06-28 00:59:01,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:01,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:01,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:01,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 574 transitions, 9371 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:01,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:03,416 INFO L124 PetriNetUnfolderBase]: 2915/5147 cut-off events. [2024-06-28 00:59:03,416 INFO L125 PetriNetUnfolderBase]: For 267805/267805 co-relation queries the response was YES. [2024-06-28 00:59:03,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37237 conditions, 5147 events. 2915/5147 cut-off events. For 267805/267805 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 34282 event pairs, 746 based on Foata normal form. 2/4904 useless extension candidates. Maximal degree in co-relation 37006. Up to 4514 conditions per place. [2024-06-28 00:59:03,492 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 498 selfloop transitions, 106 changer transitions 0/611 dead transitions. [2024-06-28 00:59:03,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 611 transitions, 10975 flow [2024-06-28 00:59:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 00:59:03,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-28 00:59:03,493 INFO L175 Difference]: Start difference. First operand has 504 places, 574 transitions, 9371 flow. Second operand 11 states and 178 transitions. [2024-06-28 00:59:03,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 611 transitions, 10975 flow [2024-06-28 00:59:05,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 611 transitions, 10636 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:05,481 INFO L231 Difference]: Finished difference. Result has 507 places, 577 transitions, 9485 flow [2024-06-28 00:59:05,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9032, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9485, PETRI_PLACES=507, PETRI_TRANSITIONS=577} [2024-06-28 00:59:05,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-28 00:59:05,481 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 577 transitions, 9485 flow [2024-06-28 00:59:05,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:05,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:05,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:05,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:59:05,482 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:05,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash 179910940, now seen corresponding path program 16 times [2024-06-28 00:59:05,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:05,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435712273] [2024-06-28 00:59:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:05,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435712273] [2024-06-28 00:59:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435712273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259483798] [2024-06-28 00:59:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:06,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:06,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:06,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 577 transitions, 9485 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:06,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:06,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:08,180 INFO L124 PetriNetUnfolderBase]: 2931/5182 cut-off events. [2024-06-28 00:59:08,180 INFO L125 PetriNetUnfolderBase]: For 278907/278907 co-relation queries the response was YES. [2024-06-28 00:59:08,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37561 conditions, 5182 events. 2931/5182 cut-off events. For 278907/278907 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 34625 event pairs, 878 based on Foata normal form. 2/4946 useless extension candidates. Maximal degree in co-relation 37328. Up to 4576 conditions per place. [2024-06-28 00:59:08,258 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 510 selfloop transitions, 88 changer transitions 0/605 dead transitions. [2024-06-28 00:59:08,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 605 transitions, 10969 flow [2024-06-28 00:59:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:59:08,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:59:08,260 INFO L175 Difference]: Start difference. First operand has 507 places, 577 transitions, 9485 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:59:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 605 transitions, 10969 flow [2024-06-28 00:59:10,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 605 transitions, 10546 flow, removed 109 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:10,375 INFO L231 Difference]: Finished difference. Result has 509 places, 579 transitions, 9430 flow [2024-06-28 00:59:10,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9062, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9430, PETRI_PLACES=509, PETRI_TRANSITIONS=579} [2024-06-28 00:59:10,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-28 00:59:10,375 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 579 transitions, 9430 flow [2024-06-28 00:59:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:10,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:10,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:59:10,376 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:10,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 179905360, now seen corresponding path program 17 times [2024-06-28 00:59:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656572587] [2024-06-28 00:59:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656572587] [2024-06-28 00:59:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656572587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:11,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:11,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:11,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502769737] [2024-06-28 00:59:11,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:11,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:11,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:11,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:11,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 579 transitions, 9430 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:11,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:11,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:11,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:13,284 INFO L124 PetriNetUnfolderBase]: 2955/5231 cut-off events. [2024-06-28 00:59:13,284 INFO L125 PetriNetUnfolderBase]: For 284686/284686 co-relation queries the response was YES. [2024-06-28 00:59:13,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37842 conditions, 5231 events. 2955/5231 cut-off events. For 284686/284686 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35062 event pairs, 844 based on Foata normal form. 2/4992 useless extension candidates. Maximal degree in co-relation 37608. Up to 4528 conditions per place. [2024-06-28 00:59:13,370 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 525 selfloop transitions, 80 changer transitions 0/612 dead transitions. [2024-06-28 00:59:13,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 612 transitions, 11026 flow [2024-06-28 00:59:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:59:13,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-28 00:59:13,372 INFO L175 Difference]: Start difference. First operand has 509 places, 579 transitions, 9430 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:59:13,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 612 transitions, 11026 flow [2024-06-28 00:59:15,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 612 transitions, 10688 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:15,762 INFO L231 Difference]: Finished difference. Result has 512 places, 582 transitions, 9528 flow [2024-06-28 00:59:15,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9100, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9528, PETRI_PLACES=512, PETRI_TRANSITIONS=582} [2024-06-28 00:59:15,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 470 predicate places. [2024-06-28 00:59:15,762 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 582 transitions, 9528 flow [2024-06-28 00:59:15,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:15,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:15,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:15,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:59:15,763 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:15,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash 179761210, now seen corresponding path program 18 times [2024-06-28 00:59:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740516268] [2024-06-28 00:59:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:16,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:16,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740516268] [2024-06-28 00:59:16,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740516268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:16,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:16,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:16,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879490668] [2024-06-28 00:59:16,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:16,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:16,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:16,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:16,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:16,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 582 transitions, 9528 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:16,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:16,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:18,643 INFO L124 PetriNetUnfolderBase]: 2979/5279 cut-off events. [2024-06-28 00:59:18,644 INFO L125 PetriNetUnfolderBase]: For 283816/283816 co-relation queries the response was YES. [2024-06-28 00:59:18,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38312 conditions, 5279 events. 2979/5279 cut-off events. For 283816/283816 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 35514 event pairs, 827 based on Foata normal form. 2/5034 useless extension candidates. Maximal degree in co-relation 38076. Up to 4506 conditions per place. [2024-06-28 00:59:18,727 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 527 selfloop transitions, 82 changer transitions 0/616 dead transitions. [2024-06-28 00:59:18,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 616 transitions, 11135 flow [2024-06-28 00:59:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:59:18,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 00:59:18,729 INFO L175 Difference]: Start difference. First operand has 512 places, 582 transitions, 9528 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:59:18,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 616 transitions, 11135 flow [2024-06-28 00:59:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 616 transitions, 10771 flow, removed 118 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:20,959 INFO L231 Difference]: Finished difference. Result has 516 places, 585 transitions, 9603 flow [2024-06-28 00:59:20,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9176, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9603, PETRI_PLACES=516, PETRI_TRANSITIONS=585} [2024-06-28 00:59:20,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-28 00:59:20,960 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 585 transitions, 9603 flow [2024-06-28 00:59:20,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:20,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:20,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:20,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:59:20,961 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:20,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 121668760, now seen corresponding path program 19 times [2024-06-28 00:59:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957331196] [2024-06-28 00:59:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957331196] [2024-06-28 00:59:21,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957331196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:21,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:21,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:21,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882450067] [2024-06-28 00:59:21,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:21,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:21,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:21,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:21,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 585 transitions, 9603 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:21,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:21,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:23,771 INFO L124 PetriNetUnfolderBase]: 3003/5330 cut-off events. [2024-06-28 00:59:23,771 INFO L125 PetriNetUnfolderBase]: For 280024/280024 co-relation queries the response was YES. [2024-06-28 00:59:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38614 conditions, 5330 events. 3003/5330 cut-off events. For 280024/280024 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35958 event pairs, 592 based on Foata normal form. 2/5106 useless extension candidates. Maximal degree in co-relation 38376. Up to 4215 conditions per place. [2024-06-28 00:59:23,859 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 489 selfloop transitions, 128 changer transitions 0/624 dead transitions. [2024-06-28 00:59:23,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 624 transitions, 11242 flow [2024-06-28 00:59:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:59:23,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 00:59:23,860 INFO L175 Difference]: Start difference. First operand has 516 places, 585 transitions, 9603 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:59:23,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 624 transitions, 11242 flow [2024-06-28 00:59:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 624 transitions, 10881 flow, removed 115 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:26,381 INFO L231 Difference]: Finished difference. Result has 521 places, 588 transitions, 9786 flow [2024-06-28 00:59:26,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9254, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9786, PETRI_PLACES=521, PETRI_TRANSITIONS=588} [2024-06-28 00:59:26,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 479 predicate places. [2024-06-28 00:59:26,382 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 588 transitions, 9786 flow [2024-06-28 00:59:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:26,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:26,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:59:26,382 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -282409078, now seen corresponding path program 8 times [2024-06-28 00:59:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723924820] [2024-06-28 00:59:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:26,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723924820] [2024-06-28 00:59:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723924820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:28,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26934907] [2024-06-28 00:59:28,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:28,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:28,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:28,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 588 transitions, 9786 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:28,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:28,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:28,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:30,281 INFO L124 PetriNetUnfolderBase]: 3016/5351 cut-off events. [2024-06-28 00:59:30,281 INFO L125 PetriNetUnfolderBase]: For 266635/266635 co-relation queries the response was YES. [2024-06-28 00:59:30,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38747 conditions, 5351 events. 3016/5351 cut-off events. For 266635/266635 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36061 event pairs, 923 based on Foata normal form. 2/5101 useless extension candidates. Maximal degree in co-relation 38507. Up to 4775 conditions per place. [2024-06-28 00:59:30,378 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 541 selfloop transitions, 66 changer transitions 0/614 dead transitions. [2024-06-28 00:59:30,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 614 transitions, 11190 flow [2024-06-28 00:59:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:59:30,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-06-28 00:59:30,380 INFO L175 Difference]: Start difference. First operand has 521 places, 588 transitions, 9786 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:59:30,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 614 transitions, 11190 flow [2024-06-28 00:59:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 614 transitions, 10764 flow, removed 107 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:32,935 INFO L231 Difference]: Finished difference. Result has 522 places, 590 transitions, 9614 flow [2024-06-28 00:59:32,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9614, PETRI_PLACES=522, PETRI_TRANSITIONS=590} [2024-06-28 00:59:32,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-28 00:59:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 590 transitions, 9614 flow [2024-06-28 00:59:32,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:32,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:32,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:32,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:59:32,937 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:32,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1427610029, now seen corresponding path program 3 times [2024-06-28 00:59:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099037936] [2024-06-28 00:59:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:32,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:34,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099037936] [2024-06-28 00:59:34,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099037936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:34,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:34,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873643263] [2024-06-28 00:59:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:34,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:34,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:34,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 590 transitions, 9614 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:34,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:34,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:36,263 INFO L124 PetriNetUnfolderBase]: 3014/5350 cut-off events. [2024-06-28 00:59:36,264 INFO L125 PetriNetUnfolderBase]: For 234727/234727 co-relation queries the response was YES. [2024-06-28 00:59:36,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37760 conditions, 5350 events. 3014/5350 cut-off events. For 234727/234727 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36136 event pairs, 917 based on Foata normal form. 1/5103 useless extension candidates. Maximal degree in co-relation 37519. Up to 4744 conditions per place. [2024-06-28 00:59:36,362 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 511 selfloop transitions, 96 changer transitions 0/614 dead transitions. [2024-06-28 00:59:36,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 614 transitions, 10918 flow [2024-06-28 00:59:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:59:36,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 00:59:36,363 INFO L175 Difference]: Start difference. First operand has 522 places, 590 transitions, 9614 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:59:36,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 614 transitions, 10918 flow [2024-06-28 00:59:38,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 614 transitions, 10686 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:38,988 INFO L231 Difference]: Finished difference. Result has 523 places, 590 transitions, 9600 flow [2024-06-28 00:59:38,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9382, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9600, PETRI_PLACES=523, PETRI_TRANSITIONS=590} [2024-06-28 00:59:38,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 481 predicate places. [2024-06-28 00:59:38,989 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 590 transitions, 9600 flow [2024-06-28 00:59:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:38,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:38,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:38,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:59:38,990 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:38,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1993021724, now seen corresponding path program 20 times [2024-06-28 00:59:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:38,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083489948] [2024-06-28 00:59:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:38,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083489948] [2024-06-28 00:59:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083489948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:40,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242225435] [2024-06-28 00:59:40,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:40,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:40,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 590 transitions, 9600 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:40,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:40,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:40,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:41,938 INFO L124 PetriNetUnfolderBase]: 3030/5370 cut-off events. [2024-06-28 00:59:41,939 INFO L125 PetriNetUnfolderBase]: For 246369/246369 co-relation queries the response was YES. [2024-06-28 00:59:42,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38140 conditions, 5370 events. 3030/5370 cut-off events. For 246369/246369 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36183 event pairs, 854 based on Foata normal form. 2/5118 useless extension candidates. Maximal degree in co-relation 37898. Up to 4772 conditions per place. [2024-06-28 00:59:42,028 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 521 selfloop transitions, 92 changer transitions 0/620 dead transitions. [2024-06-28 00:59:42,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 620 transitions, 11141 flow [2024-06-28 00:59:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:59:42,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 00:59:42,029 INFO L175 Difference]: Start difference. First operand has 523 places, 590 transitions, 9600 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:59:42,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 620 transitions, 11141 flow [2024-06-28 00:59:44,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 620 transitions, 10835 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:59:44,110 INFO L231 Difference]: Finished difference. Result has 523 places, 592 transitions, 9640 flow [2024-06-28 00:59:44,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9294, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9640, PETRI_PLACES=523, PETRI_TRANSITIONS=592} [2024-06-28 00:59:44,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 481 predicate places. [2024-06-28 00:59:44,111 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 592 transitions, 9640 flow [2024-06-28 00:59:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:44,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:44,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:44,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:59:44,112 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:44,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1993016144, now seen corresponding path program 21 times [2024-06-28 00:59:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609808832] [2024-06-28 00:59:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609808832] [2024-06-28 00:59:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609808832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:45,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791763928] [2024-06-28 00:59:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:45,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:45,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 592 transitions, 9640 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:45,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:45,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:45,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:47,153 INFO L124 PetriNetUnfolderBase]: 3054/5420 cut-off events. [2024-06-28 00:59:47,154 INFO L125 PetriNetUnfolderBase]: For 254292/254292 co-relation queries the response was YES. [2024-06-28 00:59:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38719 conditions, 5420 events. 3054/5420 cut-off events. For 254292/254292 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 36647 event pairs, 842 based on Foata normal form. 2/5166 useless extension candidates. Maximal degree in co-relation 38476. Up to 4762 conditions per place. [2024-06-28 00:59:47,247 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 528 selfloop transitions, 92 changer transitions 0/627 dead transitions. [2024-06-28 00:59:47,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 627 transitions, 11285 flow [2024-06-28 00:59:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:59:47,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 00:59:47,249 INFO L175 Difference]: Start difference. First operand has 523 places, 592 transitions, 9640 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:59:47,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 627 transitions, 11285 flow [2024-06-28 00:59:49,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 627 transitions, 10955 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:49,541 INFO L231 Difference]: Finished difference. Result has 526 places, 595 transitions, 9724 flow [2024-06-28 00:59:49,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9314, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9724, PETRI_PLACES=526, PETRI_TRANSITIONS=595} [2024-06-28 00:59:49,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 484 predicate places. [2024-06-28 00:59:49,542 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 595 transitions, 9724 flow [2024-06-28 00:59:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:49,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:49,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:59:49,542 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:49,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1421417188, now seen corresponding path program 22 times [2024-06-28 00:59:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265928150] [2024-06-28 00:59:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:50,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265928150] [2024-06-28 00:59:50,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265928150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:50,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351837455] [2024-06-28 00:59:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:50,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:50,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 595 transitions, 9724 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:50,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:50,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:50,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:52,393 INFO L124 PetriNetUnfolderBase]: 3078/5471 cut-off events. [2024-06-28 00:59:52,393 INFO L125 PetriNetUnfolderBase]: For 257509/257509 co-relation queries the response was YES. [2024-06-28 00:59:52,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39163 conditions, 5471 events. 3078/5471 cut-off events. For 257509/257509 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 37140 event pairs, 830 based on Foata normal form. 2/5214 useless extension candidates. Maximal degree in co-relation 38918. Up to 4790 conditions per place. [2024-06-28 00:59:52,493 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 532 selfloop transitions, 92 changer transitions 0/631 dead transitions. [2024-06-28 00:59:52,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 631 transitions, 11383 flow [2024-06-28 00:59:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:59:52,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 00:59:52,494 INFO L175 Difference]: Start difference. First operand has 526 places, 595 transitions, 9724 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:59:52,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 631 transitions, 11383 flow [2024-06-28 00:59:54,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 631 transitions, 11009 flow, removed 102 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:54,818 INFO L231 Difference]: Finished difference. Result has 530 places, 598 transitions, 9766 flow [2024-06-28 00:59:54,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9356, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9766, PETRI_PLACES=530, PETRI_TRANSITIONS=598} [2024-06-28 00:59:54,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-28 00:59:54,818 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 598 transitions, 9766 flow [2024-06-28 00:59:54,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:54,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:54,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:59:54,819 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:59:54,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1998593850, now seen corresponding path program 9 times [2024-06-28 00:59:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534113023] [2024-06-28 00:59:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:59:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534113023] [2024-06-28 00:59:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534113023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:56,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:56,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:56,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988691831] [2024-06-28 00:59:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:56,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 00:59:56,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 598 transitions, 9766 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:56,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:56,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 00:59:56,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:58,607 INFO L124 PetriNetUnfolderBase]: 3074/5465 cut-off events. [2024-06-28 00:59:58,607 INFO L125 PetriNetUnfolderBase]: For 236245/236245 co-relation queries the response was YES. [2024-06-28 00:59:58,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38425 conditions, 5465 events. 3074/5465 cut-off events. For 236245/236245 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 37160 event pairs, 880 based on Foata normal form. 2/5206 useless extension candidates. Maximal degree in co-relation 38178. Up to 4838 conditions per place. [2024-06-28 00:59:58,708 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 524 selfloop transitions, 96 changer transitions 0/627 dead transitions. [2024-06-28 00:59:58,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 627 transitions, 11155 flow [2024-06-28 00:59:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:59:58,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-06-28 00:59:58,709 INFO L175 Difference]: Start difference. First operand has 530 places, 598 transitions, 9766 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:59:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 627 transitions, 11155 flow [2024-06-28 01:00:00,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 627 transitions, 10743 flow, removed 121 selfloop flow, removed 7 redundant places. [2024-06-28 01:00:00,643 INFO L231 Difference]: Finished difference. Result has 534 places, 598 transitions, 9554 flow [2024-06-28 01:00:00,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9354, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9554, PETRI_PLACES=534, PETRI_TRANSITIONS=598} [2024-06-28 01:00:00,644 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 492 predicate places. [2024-06-28 01:00:00,644 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 598 transitions, 9554 flow [2024-06-28 01:00:00,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:00,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:00,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:00:00,644 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:00,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2102643782, now seen corresponding path program 23 times [2024-06-28 01:00:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:00,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485555573] [2024-06-28 01:00:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:01,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485555573] [2024-06-28 01:00:01,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485555573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625932080] [2024-06-28 01:00:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:01,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 598 transitions, 9554 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:01,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:01,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:01,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:03,634 INFO L124 PetriNetUnfolderBase]: 3090/5493 cut-off events. [2024-06-28 01:00:03,634 INFO L125 PetriNetUnfolderBase]: For 231344/231344 co-relation queries the response was YES. [2024-06-28 01:00:03,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38276 conditions, 5493 events. 3090/5493 cut-off events. For 231344/231344 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37379 event pairs, 831 based on Foata normal form. 2/5236 useless extension candidates. Maximal degree in co-relation 38028. Up to 4751 conditions per place. [2024-06-28 01:00:03,739 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 509 selfloop transitions, 114 changer transitions 0/630 dead transitions. [2024-06-28 01:00:03,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 630 transitions, 11127 flow [2024-06-28 01:00:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:00:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:00:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:00:03,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 01:00:03,740 INFO L175 Difference]: Start difference. First operand has 534 places, 598 transitions, 9554 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:00:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 630 transitions, 11127 flow [2024-06-28 01:00:05,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 630 transitions, 10921 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:00:05,863 INFO L231 Difference]: Finished difference. Result has 534 places, 600 transitions, 9738 flow [2024-06-28 01:00:05,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9738, PETRI_PLACES=534, PETRI_TRANSITIONS=600} [2024-06-28 01:00:05,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 492 predicate places. [2024-06-28 01:00:05,864 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 600 transitions, 9738 flow [2024-06-28 01:00:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:05,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:05,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:00:05,864 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:05,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2102649362, now seen corresponding path program 24 times [2024-06-28 01:00:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877314218] [2024-06-28 01:00:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:06,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877314218] [2024-06-28 01:00:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877314218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099431237] [2024-06-28 01:00:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:07,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:07,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 600 transitions, 9738 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:07,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:07,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:07,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:08,900 INFO L124 PetriNetUnfolderBase]: 3114/5544 cut-off events. [2024-06-28 01:00:08,901 INFO L125 PetriNetUnfolderBase]: For 241584/241584 co-relation queries the response was YES. [2024-06-28 01:00:08,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39111 conditions, 5544 events. 3114/5544 cut-off events. For 241584/241584 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37843 event pairs, 813 based on Foata normal form. 2/5284 useless extension candidates. Maximal degree in co-relation 38862. Up to 4741 conditions per place. [2024-06-28 01:00:09,005 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 516 selfloop transitions, 114 changer transitions 0/637 dead transitions. [2024-06-28 01:00:09,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 637 transitions, 11415 flow [2024-06-28 01:00:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:00:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:00:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:00:09,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 01:00:09,006 INFO L175 Difference]: Start difference. First operand has 534 places, 600 transitions, 9738 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:00:09,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 637 transitions, 11415 flow [2024-06-28 01:00:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 637 transitions, 11041 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:11,335 INFO L231 Difference]: Finished difference. Result has 537 places, 603 transitions, 9822 flow [2024-06-28 01:00:11,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9368, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9822, PETRI_PLACES=537, PETRI_TRANSITIONS=603} [2024-06-28 01:00:11,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 495 predicate places. [2024-06-28 01:00:11,335 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 603 transitions, 9822 flow [2024-06-28 01:00:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:11,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:11,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:00:11,343 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2102434036, now seen corresponding path program 10 times [2024-06-28 01:00:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131558685] [2024-06-28 01:00:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131558685] [2024-06-28 01:00:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131558685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123286707] [2024-06-28 01:00:12,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:12,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:12,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:12,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:12,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:12,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 603 transitions, 9822 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:12,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:12,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:12,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:14,899 INFO L124 PetriNetUnfolderBase]: 3127/5563 cut-off events. [2024-06-28 01:00:14,899 INFO L125 PetriNetUnfolderBase]: For 238875/238875 co-relation queries the response was YES. [2024-06-28 01:00:14,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39128 conditions, 5563 events. 3127/5563 cut-off events. For 238875/238875 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37924 event pairs, 841 based on Foata normal form. 2/5298 useless extension candidates. Maximal degree in co-relation 38877. Up to 4798 conditions per place. [2024-06-28 01:00:15,010 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 511 selfloop transitions, 118 changer transitions 0/636 dead transitions. [2024-06-28 01:00:15,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 636 transitions, 11345 flow [2024-06-28 01:00:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:00:15,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-28 01:00:15,012 INFO L175 Difference]: Start difference. First operand has 537 places, 603 transitions, 9822 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:00:15,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 636 transitions, 11345 flow [2024-06-28 01:00:17,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 636 transitions, 10933 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-28 01:00:17,664 INFO L231 Difference]: Finished difference. Result has 541 places, 605 transitions, 9762 flow [2024-06-28 01:00:17,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9410, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9762, PETRI_PLACES=541, PETRI_TRANSITIONS=605} [2024-06-28 01:00:17,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 499 predicate places. [2024-06-28 01:00:17,665 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 605 transitions, 9762 flow [2024-06-28 01:00:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:17,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:17,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:00:17,665 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:17,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash -955663090, now seen corresponding path program 25 times [2024-06-28 01:00:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:17,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031843078] [2024-06-28 01:00:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031843078] [2024-06-28 01:00:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031843078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798345902] [2024-06-28 01:00:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:18,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:18,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 605 transitions, 9762 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:18,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:18,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:18,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:20,915 INFO L124 PetriNetUnfolderBase]: 3143/5592 cut-off events. [2024-06-28 01:00:20,915 INFO L125 PetriNetUnfolderBase]: For 235399/235399 co-relation queries the response was YES. [2024-06-28 01:00:20,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39080 conditions, 5592 events. 3143/5592 cut-off events. For 235399/235399 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 38192 event pairs, 837 based on Foata normal form. 2/5328 useless extension candidates. Maximal degree in co-relation 38828. Up to 4696 conditions per place. [2024-06-28 01:00:21,015 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 489 selfloop transitions, 142 changer transitions 0/638 dead transitions. [2024-06-28 01:00:21,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 638 transitions, 11359 flow [2024-06-28 01:00:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:00:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:00:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:00:21,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 01:00:21,017 INFO L175 Difference]: Start difference. First operand has 541 places, 605 transitions, 9762 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:00:21,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 638 transitions, 11359 flow [2024-06-28 01:00:23,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 638 transitions, 11045 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:23,307 INFO L231 Difference]: Finished difference. Result has 542 places, 607 transitions, 9894 flow [2024-06-28 01:00:23,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9448, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9894, PETRI_PLACES=542, PETRI_TRANSITIONS=607} [2024-06-28 01:00:23,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-28 01:00:23,308 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 607 transitions, 9894 flow [2024-06-28 01:00:23,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:23,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:23,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:00:23,308 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -955655154, now seen corresponding path program 11 times [2024-06-28 01:00:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183340307] [2024-06-28 01:00:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:25,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183340307] [2024-06-28 01:00:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183340307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983224626] [2024-06-28 01:00:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:25,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:25,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 607 transitions, 9894 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:25,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:25,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:25,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:27,400 INFO L124 PetriNetUnfolderBase]: 3229/5741 cut-off events. [2024-06-28 01:00:27,400 INFO L125 PetriNetUnfolderBase]: For 242416/242416 co-relation queries the response was YES. [2024-06-28 01:00:27,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41071 conditions, 5741 events. 3229/5741 cut-off events. For 242416/242416 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 39483 event pairs, 908 based on Foata normal form. 2/5449 useless extension candidates. Maximal degree in co-relation 40818. Up to 4971 conditions per place. [2024-06-28 01:00:27,509 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 544 selfloop transitions, 155 changer transitions 0/706 dead transitions. [2024-06-28 01:00:27,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 706 transitions, 13095 flow [2024-06-28 01:00:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:00:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:00:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 01:00:27,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-28 01:00:27,511 INFO L175 Difference]: Start difference. First operand has 542 places, 607 transitions, 9894 flow. Second operand 12 states and 185 transitions. [2024-06-28 01:00:27,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 706 transitions, 13095 flow [2024-06-28 01:00:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 706 transitions, 12568 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:29,837 INFO L231 Difference]: Finished difference. Result has 551 places, 664 transitions, 11372 flow [2024-06-28 01:00:29,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9468, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11372, PETRI_PLACES=551, PETRI_TRANSITIONS=664} [2024-06-28 01:00:29,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 509 predicate places. [2024-06-28 01:00:29,837 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 664 transitions, 11372 flow [2024-06-28 01:00:29,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:29,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:29,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:29,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:00:29,838 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:29,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2095015426, now seen corresponding path program 12 times [2024-06-28 01:00:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50450279] [2024-06-28 01:00:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50450279] [2024-06-28 01:00:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50450279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:32,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701274892] [2024-06-28 01:00:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:32,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:32,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 664 transitions, 11372 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:32,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:32,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:34,680 INFO L124 PetriNetUnfolderBase]: 3251/5769 cut-off events. [2024-06-28 01:00:34,680 INFO L125 PetriNetUnfolderBase]: For 249976/249976 co-relation queries the response was YES. [2024-06-28 01:00:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41689 conditions, 5769 events. 3251/5769 cut-off events. For 249976/249976 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39523 event pairs, 832 based on Foata normal form. 2/5472 useless extension candidates. Maximal degree in co-relation 41430. Up to 4416 conditions per place. [2024-06-28 01:00:34,801 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 434 selfloop transitions, 265 changer transitions 0/706 dead transitions. [2024-06-28 01:00:34,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 706 transitions, 13425 flow [2024-06-28 01:00:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:00:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:00:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 01:00:34,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-06-28 01:00:34,802 INFO L175 Difference]: Start difference. First operand has 551 places, 664 transitions, 11372 flow. Second operand 12 states and 188 transitions. [2024-06-28 01:00:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 706 transitions, 13425 flow [2024-06-28 01:00:37,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 706 transitions, 13215 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 01:00:37,261 INFO L231 Difference]: Finished difference. Result has 558 places, 668 transitions, 11934 flow [2024-06-28 01:00:37,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11934, PETRI_PLACES=558, PETRI_TRANSITIONS=668} [2024-06-28 01:00:37,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-28 01:00:37,261 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 668 transitions, 11934 flow [2024-06-28 01:00:37,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:37,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:37,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:37,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:00:37,262 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:37,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2095015085, now seen corresponding path program 2 times [2024-06-28 01:00:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076165891] [2024-06-28 01:00:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:37,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076165891] [2024-06-28 01:00:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076165891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:38,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:38,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:38,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192746445] [2024-06-28 01:00:38,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:38,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:38,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:38,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 668 transitions, 11934 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:38,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:38,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:38,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:41,090 INFO L124 PetriNetUnfolderBase]: 3267/5802 cut-off events. [2024-06-28 01:00:41,090 INFO L125 PetriNetUnfolderBase]: For 256702/256702 co-relation queries the response was YES. [2024-06-28 01:00:41,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42565 conditions, 5802 events. 3267/5802 cut-off events. For 256702/256702 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39899 event pairs, 1055 based on Foata normal form. 2/5511 useless extension candidates. Maximal degree in co-relation 42305. Up to 5112 conditions per place. [2024-06-28 01:00:41,217 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 609 selfloop transitions, 84 changer transitions 0/700 dead transitions. [2024-06-28 01:00:41,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 700 transitions, 13636 flow [2024-06-28 01:00:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:00:41,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 01:00:41,245 INFO L175 Difference]: Start difference. First operand has 558 places, 668 transitions, 11934 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:00:41,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 700 transitions, 13636 flow [2024-06-28 01:00:44,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 700 transitions, 13059 flow, removed 60 selfloop flow, removed 11 redundant places. [2024-06-28 01:00:44,044 INFO L231 Difference]: Finished difference. Result has 558 places, 670 transitions, 11677 flow [2024-06-28 01:00:44,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11357, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11677, PETRI_PLACES=558, PETRI_TRANSITIONS=670} [2024-06-28 01:00:44,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-28 01:00:44,045 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 670 transitions, 11677 flow [2024-06-28 01:00:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:44,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:44,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:44,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:00:44,045 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:44,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:44,046 INFO L85 PathProgramCache]: Analyzing trace with hash 520858462, now seen corresponding path program 26 times [2024-06-28 01:00:44,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:44,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880753659] [2024-06-28 01:00:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:44,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:45,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880753659] [2024-06-28 01:00:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880753659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:45,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808892226] [2024-06-28 01:00:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:45,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:45,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:45,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 670 transitions, 11677 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:45,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:45,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:45,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:47,507 INFO L124 PetriNetUnfolderBase]: 3283/5828 cut-off events. [2024-06-28 01:00:47,507 INFO L125 PetriNetUnfolderBase]: For 254782/254785 co-relation queries the response was YES. [2024-06-28 01:00:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42339 conditions, 5828 events. 3283/5828 cut-off events. For 254782/254785 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 40079 event pairs, 914 based on Foata normal form. 2/5527 useless extension candidates. Maximal degree in co-relation 42080. Up to 5203 conditions per place. [2024-06-28 01:00:47,612 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 586 selfloop transitions, 105 changer transitions 0/698 dead transitions. [2024-06-28 01:00:47,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 698 transitions, 13353 flow [2024-06-28 01:00:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:00:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:00:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:00:47,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-28 01:00:47,613 INFO L175 Difference]: Start difference. First operand has 558 places, 670 transitions, 11677 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:00:47,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 698 transitions, 13353 flow [2024-06-28 01:00:50,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 698 transitions, 13059 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:50,052 INFO L231 Difference]: Finished difference. Result has 559 places, 672 transitions, 11754 flow [2024-06-28 01:00:50,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11387, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11754, PETRI_PLACES=559, PETRI_TRANSITIONS=672} [2024-06-28 01:00:50,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 517 predicate places. [2024-06-28 01:00:50,052 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 672 transitions, 11754 flow [2024-06-28 01:00:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:50,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:50,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:50,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:00:50,053 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:50,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1296586640, now seen corresponding path program 13 times [2024-06-28 01:00:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615836462] [2024-06-28 01:00:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:51,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:51,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615836462] [2024-06-28 01:00:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615836462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:51,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683761972] [2024-06-28 01:00:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:51,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:51,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 672 transitions, 11754 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:51,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:51,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:51,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:53,831 INFO L124 PetriNetUnfolderBase]: 3313/5871 cut-off events. [2024-06-28 01:00:53,831 INFO L125 PetriNetUnfolderBase]: For 267787/267790 co-relation queries the response was YES. [2024-06-28 01:00:53,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 5871 events. 3313/5871 cut-off events. For 267787/267790 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 40352 event pairs, 907 based on Foata normal form. 2/5563 useless extension candidates. Maximal degree in co-relation 42733. Up to 5165 conditions per place. [2024-06-28 01:00:53,944 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 586 selfloop transitions, 116 changer transitions 0/709 dead transitions. [2024-06-28 01:00:53,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 709 transitions, 13756 flow [2024-06-28 01:00:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:00:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:00:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 01:00:53,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-28 01:00:53,945 INFO L175 Difference]: Start difference. First operand has 559 places, 672 transitions, 11754 flow. Second operand 12 states and 185 transitions. [2024-06-28 01:00:53,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 709 transitions, 13756 flow [2024-06-28 01:00:56,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 709 transitions, 13405 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:56,612 INFO L231 Difference]: Finished difference. Result has 563 places, 676 transitions, 11857 flow [2024-06-28 01:00:56,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11403, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11857, PETRI_PLACES=563, PETRI_TRANSITIONS=676} [2024-06-28 01:00:56,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 521 predicate places. [2024-06-28 01:00:56,613 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 676 transitions, 11857 flow [2024-06-28 01:00:56,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:56,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:56,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:56,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:00:56,614 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:00:56,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash -82898438, now seen corresponding path program 14 times [2024-06-28 01:00:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100120804] [2024-06-28 01:00:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:58,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:58,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100120804] [2024-06-28 01:00:58,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100120804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:58,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014425563] [2024-06-28 01:00:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:58,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:00:58,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 676 transitions, 11857 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:58,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:58,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:00:58,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:00,605 INFO L124 PetriNetUnfolderBase]: 3343/5916 cut-off events. [2024-06-28 01:01:00,605 INFO L125 PetriNetUnfolderBase]: For 285736/285739 co-relation queries the response was YES. [2024-06-28 01:01:00,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43675 conditions, 5916 events. 3343/5916 cut-off events. For 285736/285739 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 40628 event pairs, 808 based on Foata normal form. 2/5602 useless extension candidates. Maximal degree in co-relation 43414. Up to 4972 conditions per place. [2024-06-28 01:01:00,706 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 541 selfloop transitions, 164 changer transitions 0/712 dead transitions. [2024-06-28 01:01:00,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 712 transitions, 13863 flow [2024-06-28 01:01:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:01:00,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:01:00,708 INFO L175 Difference]: Start difference. First operand has 563 places, 676 transitions, 11857 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:01:00,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 712 transitions, 13863 flow [2024-06-28 01:01:03,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 712 transitions, 13624 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:03,204 INFO L231 Difference]: Finished difference. Result has 566 places, 680 transitions, 12175 flow [2024-06-28 01:01:03,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11618, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12175, PETRI_PLACES=566, PETRI_TRANSITIONS=680} [2024-06-28 01:01:03,204 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 524 predicate places. [2024-06-28 01:01:03,204 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 680 transitions, 12175 flow [2024-06-28 01:01:03,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:03,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:03,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:03,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:01:03,205 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:03,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash -82907738, now seen corresponding path program 15 times [2024-06-28 01:01:03,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940667032] [2024-06-28 01:01:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940667032] [2024-06-28 01:01:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940667032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:04,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:04,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874078851] [2024-06-28 01:01:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:04,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:04,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 680 transitions, 12175 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:04,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:04,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:04,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:06,850 INFO L124 PetriNetUnfolderBase]: 3356/5935 cut-off events. [2024-06-28 01:01:06,851 INFO L125 PetriNetUnfolderBase]: For 288878/288881 co-relation queries the response was YES. [2024-06-28 01:01:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44248 conditions, 5935 events. 3356/5935 cut-off events. For 288878/288881 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 40730 event pairs, 808 based on Foata normal form. 2/5618 useless extension candidates. Maximal degree in co-relation 43985. Up to 5029 conditions per place. [2024-06-28 01:01:06,966 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 544 selfloop transitions, 161 changer transitions 0/712 dead transitions. [2024-06-28 01:01:06,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 712 transitions, 13833 flow [2024-06-28 01:01:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:01:06,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-28 01:01:06,967 INFO L175 Difference]: Start difference. First operand has 566 places, 680 transitions, 12175 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:01:06,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 712 transitions, 13833 flow [2024-06-28 01:01:09,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 712 transitions, 13385 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:09,808 INFO L231 Difference]: Finished difference. Result has 569 places, 682 transitions, 12172 flow [2024-06-28 01:01:09,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11745, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12172, PETRI_PLACES=569, PETRI_TRANSITIONS=682} [2024-06-28 01:01:09,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 527 predicate places. [2024-06-28 01:01:09,809 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 682 transitions, 12172 flow [2024-06-28 01:01:09,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:09,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:09,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:09,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:01:09,809 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:09,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash -723200890, now seen corresponding path program 16 times [2024-06-28 01:01:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:09,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070187494] [2024-06-28 01:01:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:11,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070187494] [2024-06-28 01:01:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070187494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:11,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:11,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238130443] [2024-06-28 01:01:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:11,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:11,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:11,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:11,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 682 transitions, 12172 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:11,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:11,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:11,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,802 INFO L124 PetriNetUnfolderBase]: 3369/5953 cut-off events. [2024-06-28 01:01:13,803 INFO L125 PetriNetUnfolderBase]: For 288325/288328 co-relation queries the response was YES. [2024-06-28 01:01:13,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44247 conditions, 5953 events. 3369/5953 cut-off events. For 288325/288328 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 40854 event pairs, 913 based on Foata normal form. 2/5633 useless extension candidates. Maximal degree in co-relation 43983. Up to 5240 conditions per place. [2024-06-28 01:01:13,926 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 589 selfloop transitions, 113 changer transitions 0/709 dead transitions. [2024-06-28 01:01:13,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 709 transitions, 14024 flow [2024-06-28 01:01:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:01:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:01:13,927 INFO L175 Difference]: Start difference. First operand has 569 places, 682 transitions, 12172 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:01:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 709 transitions, 14024 flow [2024-06-28 01:01:16,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 709 transitions, 13629 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:16,846 INFO L231 Difference]: Finished difference. Result has 570 places, 684 transitions, 12105 flow [2024-06-28 01:01:16,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11777, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12105, PETRI_PLACES=570, PETRI_TRANSITIONS=684} [2024-06-28 01:01:16,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 528 predicate places. [2024-06-28 01:01:16,847 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 684 transitions, 12105 flow [2024-06-28 01:01:16,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:16,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:16,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:01:16,847 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:16,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash -730560476, now seen corresponding path program 27 times [2024-06-28 01:01:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553552744] [2024-06-28 01:01:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553552744] [2024-06-28 01:01:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553552744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:01:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39915143] [2024-06-28 01:01:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:01:17,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:01:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:01:18,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:18,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 684 transitions, 12105 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:18,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:18,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:18,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:20,029 INFO L124 PetriNetUnfolderBase]: 3385/5983 cut-off events. [2024-06-28 01:01:20,029 INFO L125 PetriNetUnfolderBase]: For 296111/296114 co-relation queries the response was YES. [2024-06-28 01:01:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44416 conditions, 5983 events. 3385/5983 cut-off events. For 296111/296114 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 41165 event pairs, 936 based on Foata normal form. 2/5663 useless extension candidates. Maximal degree in co-relation 44151. Up to 5380 conditions per place. [2024-06-28 01:01:20,142 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 601 selfloop transitions, 102 changer transitions 0/710 dead transitions. [2024-06-28 01:01:20,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 710 transitions, 13793 flow [2024-06-28 01:01:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:20,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:01:20,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:01:20,144 INFO L175 Difference]: Start difference. First operand has 570 places, 684 transitions, 12105 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:01:20,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 710 transitions, 13793 flow [2024-06-28 01:01:22,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 710 transitions, 13505 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:01:22,916 INFO L231 Difference]: Finished difference. Result has 573 places, 686 transitions, 12182 flow [2024-06-28 01:01:22,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11817, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12182, PETRI_PLACES=573, PETRI_TRANSITIONS=686} [2024-06-28 01:01:22,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 531 predicate places. [2024-06-28 01:01:22,917 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 686 transitions, 12182 flow [2024-06-28 01:01:22,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:22,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:22,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:22,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:01:22,917 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:22,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash -745730492, now seen corresponding path program 28 times [2024-06-28 01:01:22,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:22,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385171534] [2024-06-28 01:01:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385171534] [2024-06-28 01:01:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385171534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:24,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:24,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461506460] [2024-06-28 01:01:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:24,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:24,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 686 transitions, 12182 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:24,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:24,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:26,381 INFO L124 PetriNetUnfolderBase]: 3401/6012 cut-off events. [2024-06-28 01:01:26,381 INFO L125 PetriNetUnfolderBase]: For 304807/304810 co-relation queries the response was YES. [2024-06-28 01:01:26,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44762 conditions, 6012 events. 3401/6012 cut-off events. For 304807/304810 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 41409 event pairs, 793 based on Foata normal form. 2/5691 useless extension candidates. Maximal degree in co-relation 44496. Up to 4853 conditions per place. [2024-06-28 01:01:26,506 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 520 selfloop transitions, 189 changer transitions 0/716 dead transitions. [2024-06-28 01:01:26,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 716 transitions, 13898 flow [2024-06-28 01:01:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:01:26,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 01:01:26,507 INFO L175 Difference]: Start difference. First operand has 573 places, 686 transitions, 12182 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:01:26,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 716 transitions, 13898 flow [2024-06-28 01:01:29,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 716 transitions, 13549 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:29,382 INFO L231 Difference]: Finished difference. Result has 575 places, 688 transitions, 12376 flow [2024-06-28 01:01:29,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11833, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12376, PETRI_PLACES=575, PETRI_TRANSITIONS=688} [2024-06-28 01:01:29,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 533 predicate places. [2024-06-28 01:01:29,382 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 688 transitions, 12376 flow [2024-06-28 01:01:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:29,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:29,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:29,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:01:29,383 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:29,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:29,383 INFO L85 PathProgramCache]: Analyzing trace with hash -745722556, now seen corresponding path program 17 times [2024-06-28 01:01:29,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:29,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181644952] [2024-06-28 01:01:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181644952] [2024-06-28 01:01:31,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181644952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:31,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108216045] [2024-06-28 01:01:31,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:31,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:31,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:31,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:31,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 688 transitions, 12376 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:31,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:31,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:31,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:33,816 INFO L124 PetriNetUnfolderBase]: 3414/6030 cut-off events. [2024-06-28 01:01:33,816 INFO L125 PetriNetUnfolderBase]: For 306888/306891 co-relation queries the response was YES. [2024-06-28 01:01:33,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45068 conditions, 6030 events. 3414/6030 cut-off events. For 306888/306891 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41505 event pairs, 823 based on Foata normal form. 2/5706 useless extension candidates. Maximal degree in co-relation 44801. Up to 5071 conditions per place. [2024-06-28 01:01:33,931 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 548 selfloop transitions, 165 changer transitions 0/720 dead transitions. [2024-06-28 01:01:33,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 720 transitions, 14272 flow [2024-06-28 01:01:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:01:33,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:01:33,933 INFO L175 Difference]: Start difference. First operand has 575 places, 688 transitions, 12376 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:01:33,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 720 transitions, 14272 flow [2024-06-28 01:01:36,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 720 transitions, 13745 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:36,794 INFO L231 Difference]: Finished difference. Result has 578 places, 690 transitions, 12284 flow [2024-06-28 01:01:36,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11849, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12284, PETRI_PLACES=578, PETRI_TRANSITIONS=690} [2024-06-28 01:01:36,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 536 predicate places. [2024-06-28 01:01:36,795 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 690 transitions, 12284 flow [2024-06-28 01:01:36,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:36,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:36,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:36,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:01:36,796 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:36,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash -730566056, now seen corresponding path program 29 times [2024-06-28 01:01:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593500010] [2024-06-28 01:01:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:37,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593500010] [2024-06-28 01:01:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593500010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:01:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549101253] [2024-06-28 01:01:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:01:37,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:01:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:01:38,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 690 transitions, 12284 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:38,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:40,242 INFO L124 PetriNetUnfolderBase]: 3454/6110 cut-off events. [2024-06-28 01:01:40,242 INFO L125 PetriNetUnfolderBase]: For 312712/312715 co-relation queries the response was YES. [2024-06-28 01:01:40,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45487 conditions, 6110 events. 3454/6110 cut-off events. For 312712/312715 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 42227 event pairs, 947 based on Foata normal form. 2/5783 useless extension candidates. Maximal degree in co-relation 45219. Up to 5472 conditions per place. [2024-06-28 01:01:40,356 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 614 selfloop transitions, 102 changer transitions 0/723 dead transitions. [2024-06-28 01:01:40,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 723 transitions, 14100 flow [2024-06-28 01:01:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:01:40,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-28 01:01:40,357 INFO L175 Difference]: Start difference. First operand has 578 places, 690 transitions, 12284 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:01:40,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 723 transitions, 14100 flow [2024-06-28 01:01:43,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 723 transitions, 13703 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:43,283 INFO L231 Difference]: Finished difference. Result has 581 places, 694 transitions, 12326 flow [2024-06-28 01:01:43,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11887, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12326, PETRI_PLACES=581, PETRI_TRANSITIONS=694} [2024-06-28 01:01:43,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 539 predicate places. [2024-06-28 01:01:43,284 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 694 transitions, 12326 flow [2024-06-28 01:01:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:43,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:43,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:43,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:01:43,284 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:43,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -730350730, now seen corresponding path program 18 times [2024-06-28 01:01:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388749160] [2024-06-28 01:01:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388749160] [2024-06-28 01:01:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388749160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813755160] [2024-06-28 01:01:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:44,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:44,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:44,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 694 transitions, 12326 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:44,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:44,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:44,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:47,270 INFO L124 PetriNetUnfolderBase]: 3450/6104 cut-off events. [2024-06-28 01:01:47,270 INFO L125 PetriNetUnfolderBase]: For 300564/300567 co-relation queries the response was YES. [2024-06-28 01:01:47,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44866 conditions, 6104 events. 3450/6104 cut-off events. For 300564/300567 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 42252 event pairs, 955 based on Foata normal form. 2/5776 useless extension candidates. Maximal degree in co-relation 44596. Up to 5485 conditions per place. [2024-06-28 01:01:47,392 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 608 selfloop transitions, 104 changer transitions 0/719 dead transitions. [2024-06-28 01:01:47,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 719 transitions, 13864 flow [2024-06-28 01:01:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:01:47,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-06-28 01:01:47,393 INFO L175 Difference]: Start difference. First operand has 581 places, 694 transitions, 12326 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:01:47,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 719 transitions, 13864 flow [2024-06-28 01:01:50,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 719 transitions, 13387 flow, removed 140 selfloop flow, removed 7 redundant places. [2024-06-28 01:01:50,358 INFO L231 Difference]: Finished difference. Result has 585 places, 694 transitions, 12062 flow [2024-06-28 01:01:50,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11849, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12062, PETRI_PLACES=585, PETRI_TRANSITIONS=694} [2024-06-28 01:01:50,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 543 predicate places. [2024-06-28 01:01:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 694 transitions, 12062 flow [2024-06-28 01:01:50,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:50,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:50,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:01:50,359 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -773495556, now seen corresponding path program 30 times [2024-06-28 01:01:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112335399] [2024-06-28 01:01:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:51,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112335399] [2024-06-28 01:01:51,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112335399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:51,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:51,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:01:51,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250810781] [2024-06-28 01:01:51,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:51,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:01:51,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:01:51,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:01:51,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:51,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 694 transitions, 12062 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:51,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:51,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:51,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:53,823 INFO L124 PetriNetUnfolderBase]: 3466/6132 cut-off events. [2024-06-28 01:01:53,824 INFO L125 PetriNetUnfolderBase]: For 298914/298917 co-relation queries the response was YES. [2024-06-28 01:01:53,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44641 conditions, 6132 events. 3466/6132 cut-off events. For 298914/298917 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 42491 event pairs, 819 based on Foata normal form. 2/5805 useless extension candidates. Maximal degree in co-relation 44370. Up to 4966 conditions per place. [2024-06-28 01:01:53,945 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 525 selfloop transitions, 190 changer transitions 0/722 dead transitions. [2024-06-28 01:01:53,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 722 transitions, 13786 flow [2024-06-28 01:01:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:01:53,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 01:01:53,947 INFO L175 Difference]: Start difference. First operand has 585 places, 694 transitions, 12062 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:01:53,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 722 transitions, 13786 flow [2024-06-28 01:01:56,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 722 transitions, 13569 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:01:56,833 INFO L231 Difference]: Finished difference. Result has 585 places, 696 transitions, 12398 flow [2024-06-28 01:01:56,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11845, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12398, PETRI_PLACES=585, PETRI_TRANSITIONS=696} [2024-06-28 01:01:56,833 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 543 predicate places. [2024-06-28 01:01:56,833 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 696 transitions, 12398 flow [2024-06-28 01:01:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:56,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:56,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:56,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:01:56,834 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:01:56,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash -773285810, now seen corresponding path program 19 times [2024-06-28 01:01:56,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:56,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196987343] [2024-06-28 01:01:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:58,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196987343] [2024-06-28 01:01:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196987343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:58,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:58,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959474721] [2024-06-28 01:01:58,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:58,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:58,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:01:58,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 696 transitions, 12398 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:58,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:58,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:01:58,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:00,977 INFO L124 PetriNetUnfolderBase]: 3462/6127 cut-off events. [2024-06-28 01:02:00,977 INFO L125 PetriNetUnfolderBase]: For 289100/289103 co-relation queries the response was YES. [2024-06-28 01:02:01,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44701 conditions, 6127 events. 3462/6127 cut-off events. For 289100/289103 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 42426 event pairs, 839 based on Foata normal form. 2/5798 useless extension candidates. Maximal degree in co-relation 44429. Up to 5270 conditions per place. [2024-06-28 01:02:01,096 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 563 selfloop transitions, 153 changer transitions 0/723 dead transitions. [2024-06-28 01:02:01,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 723 transitions, 13944 flow [2024-06-28 01:02:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:02:01,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-28 01:02:01,117 INFO L175 Difference]: Start difference. First operand has 585 places, 696 transitions, 12398 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:02:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 723 transitions, 13944 flow [2024-06-28 01:02:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 723 transitions, 13329 flow, removed 119 selfloop flow, removed 8 redundant places. [2024-06-28 01:02:04,634 INFO L231 Difference]: Finished difference. Result has 588 places, 696 transitions, 12094 flow [2024-06-28 01:02:04,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11783, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12094, PETRI_PLACES=588, PETRI_TRANSITIONS=696} [2024-06-28 01:02:04,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 546 predicate places. [2024-06-28 01:02:04,635 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 696 transitions, 12094 flow [2024-06-28 01:02:04,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:04,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:04,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:04,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:02:04,636 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:04,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1493328558, now seen corresponding path program 31 times [2024-06-28 01:02:04,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:04,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973517823] [2024-06-28 01:02:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:04,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973517823] [2024-06-28 01:02:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973517823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057374110] [2024-06-28 01:02:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:05,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:05,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 696 transitions, 12094 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:05,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:05,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:07,876 INFO L124 PetriNetUnfolderBase]: 3478/6155 cut-off events. [2024-06-28 01:02:07,876 INFO L125 PetriNetUnfolderBase]: For 288554/288557 co-relation queries the response was YES. [2024-06-28 01:02:07,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44510 conditions, 6155 events. 3478/6155 cut-off events. For 288554/288557 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 42644 event pairs, 975 based on Foata normal form. 2/5827 useless extension candidates. Maximal degree in co-relation 44237. Up to 5547 conditions per place. [2024-06-28 01:02:08,014 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 616 selfloop transitions, 100 changer transitions 0/723 dead transitions. [2024-06-28 01:02:08,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 723 transitions, 13845 flow [2024-06-28 01:02:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:02:08,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-28 01:02:08,016 INFO L175 Difference]: Start difference. First operand has 588 places, 696 transitions, 12094 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:02:08,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 723 transitions, 13845 flow [2024-06-28 01:02:11,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 723 transitions, 13518 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:02:11,106 INFO L231 Difference]: Finished difference. Result has 587 places, 698 transitions, 12144 flow [2024-06-28 01:02:11,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11767, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12144, PETRI_PLACES=587, PETRI_TRANSITIONS=698} [2024-06-28 01:02:11,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 545 predicate places. [2024-06-28 01:02:11,107 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 698 transitions, 12144 flow [2024-06-28 01:02:11,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:11,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:11,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:02:11,108 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:11,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334138, now seen corresponding path program 32 times [2024-06-28 01:02:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:11,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387921350] [2024-06-28 01:02:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387921350] [2024-06-28 01:02:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387921350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515176297] [2024-06-28 01:02:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:12,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:12,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 698 transitions, 12144 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:12,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:12,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:12,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:14,391 INFO L124 PetriNetUnfolderBase]: 3502/6205 cut-off events. [2024-06-28 01:02:14,392 INFO L125 PetriNetUnfolderBase]: For 304053/304056 co-relation queries the response was YES. [2024-06-28 01:02:14,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45155 conditions, 6205 events. 3502/6205 cut-off events. For 304053/304056 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 43146 event pairs, 978 based on Foata normal form. 2/5875 useless extension candidates. Maximal degree in co-relation 44881. Up to 5564 conditions per place. [2024-06-28 01:02:14,509 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 623 selfloop transitions, 100 changer transitions 0/730 dead transitions. [2024-06-28 01:02:14,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 730 transitions, 14001 flow [2024-06-28 01:02:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:02:14,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 01:02:14,510 INFO L175 Difference]: Start difference. First operand has 587 places, 698 transitions, 12144 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:02:14,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 730 transitions, 14001 flow [2024-06-28 01:02:17,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 730 transitions, 13640 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-28 01:02:17,553 INFO L231 Difference]: Finished difference. Result has 590 places, 701 transitions, 12226 flow [2024-06-28 01:02:17,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11783, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12226, PETRI_PLACES=590, PETRI_TRANSITIONS=701} [2024-06-28 01:02:17,554 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 548 predicate places. [2024-06-28 01:02:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 701 transitions, 12226 flow [2024-06-28 01:02:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:17,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:17,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:02:17,554 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:17,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -90532374, now seen corresponding path program 33 times [2024-06-28 01:02:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408691225] [2024-06-28 01:02:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:18,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:18,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408691225] [2024-06-28 01:02:18,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408691225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:18,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:18,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:02:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507724742] [2024-06-28 01:02:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:02:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:02:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:02:18,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:18,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 701 transitions, 12226 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:18,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:18,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:20,820 INFO L124 PetriNetUnfolderBase]: 3526/6256 cut-off events. [2024-06-28 01:02:20,820 INFO L125 PetriNetUnfolderBase]: For 313370/313373 co-relation queries the response was YES. [2024-06-28 01:02:20,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45655 conditions, 6256 events. 3526/6256 cut-off events. For 313370/313373 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 43577 event pairs, 860 based on Foata normal form. 2/5923 useless extension candidates. Maximal degree in co-relation 45379. Up to 5367 conditions per place. [2024-06-28 01:02:20,950 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 576 selfloop transitions, 151 changer transitions 0/734 dead transitions. [2024-06-28 01:02:20,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 734 transitions, 14076 flow [2024-06-28 01:02:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:02:20,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:02:20,951 INFO L175 Difference]: Start difference. First operand has 590 places, 701 transitions, 12226 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:02:20,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 734 transitions, 14076 flow [2024-06-28 01:02:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 734 transitions, 13663 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-06-28 01:02:24,182 INFO L231 Difference]: Finished difference. Result has 594 places, 704 transitions, 12364 flow [2024-06-28 01:02:24,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11813, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12364, PETRI_PLACES=594, PETRI_TRANSITIONS=704} [2024-06-28 01:02:24,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 552 predicate places. [2024-06-28 01:02:24,183 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 704 transitions, 12364 flow [2024-06-28 01:02:24,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:24,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:24,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 01:02:24,184 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:24,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -497292408, now seen corresponding path program 20 times [2024-06-28 01:02:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477031311] [2024-06-28 01:02:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477031311] [2024-06-28 01:02:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477031311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678021692] [2024-06-28 01:02:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:25,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:25,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:25,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 704 transitions, 12364 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:25,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:25,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:25,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:27,912 INFO L124 PetriNetUnfolderBase]: 3556/6299 cut-off events. [2024-06-28 01:02:27,912 INFO L125 PetriNetUnfolderBase]: For 330630/330633 co-relation queries the response was YES. [2024-06-28 01:02:28,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46265 conditions, 6299 events. 3556/6299 cut-off events. For 330630/330633 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 43846 event pairs, 843 based on Foata normal form. 2/5960 useless extension candidates. Maximal degree in co-relation 45987. Up to 4230 conditions per place. [2024-06-28 01:02:28,042 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 455 selfloop transitions, 282 changer transitions 0/744 dead transitions. [2024-06-28 01:02:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 744 transitions, 14736 flow [2024-06-28 01:02:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 01:02:28,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276315789473684 [2024-06-28 01:02:28,043 INFO L175 Difference]: Start difference. First operand has 594 places, 704 transitions, 12364 flow. Second operand 12 states and 195 transitions. [2024-06-28 01:02:28,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 744 transitions, 14736 flow [2024-06-28 01:02:31,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 744 transitions, 14215 flow, removed 113 selfloop flow, removed 7 redundant places. [2024-06-28 01:02:31,690 INFO L231 Difference]: Finished difference. Result has 599 places, 708 transitions, 12637 flow [2024-06-28 01:02:31,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11843, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12637, PETRI_PLACES=599, PETRI_TRANSITIONS=708} [2024-06-28 01:02:31,691 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 557 predicate places. [2024-06-28 01:02:31,691 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 708 transitions, 12637 flow [2024-06-28 01:02:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:31,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 01:02:31,692 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:31,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1493478288, now seen corresponding path program 34 times [2024-06-28 01:02:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522194489] [2024-06-28 01:02:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522194489] [2024-06-28 01:02:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522194489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:32,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:32,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:32,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827119947] [2024-06-28 01:02:32,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:32,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:32,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:32,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 708 transitions, 12637 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:32,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:32,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:32,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:35,228 INFO L124 PetriNetUnfolderBase]: 3580/6350 cut-off events. [2024-06-28 01:02:35,228 INFO L125 PetriNetUnfolderBase]: For 337412/337415 co-relation queries the response was YES. [2024-06-28 01:02:35,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47104 conditions, 6350 events. 3580/6350 cut-off events. For 337412/337415 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 44396 event pairs, 996 based on Foata normal form. 2/6009 useless extension candidates. Maximal degree in co-relation 46825. Up to 5688 conditions per place. [2024-06-28 01:02:35,350 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 634 selfloop transitions, 100 changer transitions 0/741 dead transitions. [2024-06-28 01:02:35,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 741 transitions, 14532 flow [2024-06-28 01:02:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:02:35,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-06-28 01:02:35,352 INFO L175 Difference]: Start difference. First operand has 599 places, 708 transitions, 12637 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:02:35,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 741 transitions, 14532 flow [2024-06-28 01:02:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 741 transitions, 13854 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:38,944 INFO L231 Difference]: Finished difference. Result has 601 places, 711 transitions, 12414 flow [2024-06-28 01:02:38,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11959, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12414, PETRI_PLACES=601, PETRI_TRANSITIONS=711} [2024-06-28 01:02:38,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 559 predicate places. [2024-06-28 01:02:38,944 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 711 transitions, 12414 flow [2024-06-28 01:02:38,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:38,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:38,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 01:02:38,945 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:38,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1487756432, now seen corresponding path program 21 times [2024-06-28 01:02:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717666933] [2024-06-28 01:02:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717666933] [2024-06-28 01:02:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717666933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:40,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306126511] [2024-06-28 01:02:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:40,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:40,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:40,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:40,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 711 transitions, 12414 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:40,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:40,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:43,169 INFO L124 PetriNetUnfolderBase]: 3593/6369 cut-off events. [2024-06-28 01:02:43,169 INFO L125 PetriNetUnfolderBase]: For 338277/338280 co-relation queries the response was YES. [2024-06-28 01:02:43,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46404 conditions, 6369 events. 3593/6369 cut-off events. For 338277/338280 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 44473 event pairs, 1025 based on Foata normal form. 2/6024 useless extension candidates. Maximal degree in co-relation 46123. Up to 5734 conditions per place. [2024-06-28 01:02:43,298 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 630 selfloop transitions, 102 changer transitions 0/739 dead transitions. [2024-06-28 01:02:43,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 739 transitions, 14125 flow [2024-06-28 01:02:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:02:43,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-06-28 01:02:43,299 INFO L175 Difference]: Start difference. First operand has 601 places, 711 transitions, 12414 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:02:43,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 739 transitions, 14125 flow [2024-06-28 01:02:46,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 739 transitions, 13700 flow, removed 116 selfloop flow, removed 7 redundant places. [2024-06-28 01:02:46,826 INFO L231 Difference]: Finished difference. Result has 605 places, 713 transitions, 12314 flow [2024-06-28 01:02:46,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11989, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12314, PETRI_PLACES=605, PETRI_TRANSITIONS=713} [2024-06-28 01:02:46,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 563 predicate places. [2024-06-28 01:02:46,826 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 713 transitions, 12314 flow [2024-06-28 01:02:46,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:46,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:46,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 01:02:46,827 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:46,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -497569114, now seen corresponding path program 35 times [2024-06-28 01:02:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059313861] [2024-06-28 01:02:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:46,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059313861] [2024-06-28 01:02:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059313861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:47,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863734769] [2024-06-28 01:02:47,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:48,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:48,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 713 transitions, 12314 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:48,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:48,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:48,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:50,411 INFO L124 PetriNetUnfolderBase]: 3609/6407 cut-off events. [2024-06-28 01:02:50,411 INFO L125 PetriNetUnfolderBase]: For 339852/339852 co-relation queries the response was YES. [2024-06-28 01:02:50,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46364 conditions, 6407 events. 3609/6407 cut-off events. For 339852/339852 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 45002 event pairs, 1402 based on Foata normal form. 2/6068 useless extension candidates. Maximal degree in co-relation 46082. Up to 6000 conditions per place. [2024-06-28 01:02:50,538 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 712 selfloop transitions, 17 changer transitions 0/736 dead transitions. [2024-06-28 01:02:50,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 736 transitions, 14062 flow [2024-06-28 01:02:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 01:02:50,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763157894736842 [2024-06-28 01:02:50,539 INFO L175 Difference]: Start difference. First operand has 605 places, 713 transitions, 12314 flow. Second operand 10 states and 143 transitions. [2024-06-28 01:02:50,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 736 transitions, 14062 flow [2024-06-28 01:02:53,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 736 transitions, 13765 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:53,727 INFO L231 Difference]: Finished difference. Result has 606 places, 715 transitions, 12244 flow [2024-06-28 01:02:53,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12017, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12244, PETRI_PLACES=606, PETRI_TRANSITIONS=715} [2024-06-28 01:02:53,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 564 predicate places. [2024-06-28 01:02:53,727 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 715 transitions, 12244 flow [2024-06-28 01:02:53,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:53,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:53,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:53,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 01:02:53,728 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:02:53,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:53,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1286675118, now seen corresponding path program 36 times [2024-06-28 01:02:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757432295] [2024-06-28 01:02:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:54,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:54,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757432295] [2024-06-28 01:02:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757432295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:54,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:02:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388826536] [2024-06-28 01:02:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:02:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:02:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:02:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:02:54,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 715 transitions, 12244 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:54,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:54,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:02:54,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:57,212 INFO L124 PetriNetUnfolderBase]: 3625/6427 cut-off events. [2024-06-28 01:02:57,212 INFO L125 PetriNetUnfolderBase]: For 349367/349370 co-relation queries the response was YES. [2024-06-28 01:02:57,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46557 conditions, 6427 events. 3625/6427 cut-off events. For 349367/349370 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 44987 event pairs, 1005 based on Foata normal form. 2/6082 useless extension candidates. Maximal degree in co-relation 46274. Up to 5679 conditions per place. [2024-06-28 01:02:57,340 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 621 selfloop transitions, 118 changer transitions 0/746 dead transitions. [2024-06-28 01:02:57,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 746 transitions, 14087 flow [2024-06-28 01:02:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:02:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:02:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:02:57,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 01:02:57,341 INFO L175 Difference]: Start difference. First operand has 606 places, 715 transitions, 12244 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:02:57,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 746 transitions, 14087 flow [2024-06-28 01:03:00,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 746 transitions, 13876 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:00,905 INFO L231 Difference]: Finished difference. Result has 608 places, 717 transitions, 12469 flow [2024-06-28 01:03:00,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12033, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12469, PETRI_PLACES=608, PETRI_TRANSITIONS=717} [2024-06-28 01:03:00,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 566 predicate places. [2024-06-28 01:03:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 717 transitions, 12469 flow [2024-06-28 01:03:00,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:00,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:00,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 01:03:00,906 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1963975518, now seen corresponding path program 22 times [2024-06-28 01:03:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772707981] [2024-06-28 01:03:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772707981] [2024-06-28 01:03:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772707981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732711058] [2024-06-28 01:03:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:02,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:02,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 717 transitions, 12469 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:02,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:02,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:02,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:05,297 INFO L124 PetriNetUnfolderBase]: 3621/6429 cut-off events. [2024-06-28 01:03:05,297 INFO L125 PetriNetUnfolderBase]: For 330048/330048 co-relation queries the response was YES. [2024-06-28 01:03:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46163 conditions, 6429 events. 3621/6429 cut-off events. For 330048/330048 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 45228 event pairs, 1399 based on Foata normal form. 2/6088 useless extension candidates. Maximal degree in co-relation 45879. Up to 5981 conditions per place. [2024-06-28 01:03:05,427 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 710 selfloop transitions, 24 changer transitions 0/741 dead transitions. [2024-06-28 01:03:05,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 741 transitions, 14039 flow [2024-06-28 01:03:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:03:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:03:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 01:03:05,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706140350877193 [2024-06-28 01:03:05,428 INFO L175 Difference]: Start difference. First operand has 608 places, 717 transitions, 12469 flow. Second operand 12 states and 169 transitions. [2024-06-28 01:03:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 741 transitions, 14039 flow [2024-06-28 01:03:08,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 741 transitions, 13575 flow, removed 117 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:08,725 INFO L231 Difference]: Finished difference. Result has 612 places, 717 transitions, 12059 flow [2024-06-28 01:03:08,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12005, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12059, PETRI_PLACES=612, PETRI_TRANSITIONS=717} [2024-06-28 01:03:08,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 570 predicate places. [2024-06-28 01:03:08,726 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 717 transitions, 12059 flow [2024-06-28 01:03:08,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:08,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:08,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 01:03:08,726 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:08,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1294026768, now seen corresponding path program 37 times [2024-06-28 01:03:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143955702] [2024-06-28 01:03:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143955702] [2024-06-28 01:03:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143955702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:09,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797458662] [2024-06-28 01:03:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:09,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:09,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 717 transitions, 12059 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:09,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:09,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:09,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:12,130 INFO L124 PetriNetUnfolderBase]: 3637/6449 cut-off events. [2024-06-28 01:03:12,131 INFO L125 PetriNetUnfolderBase]: For 323909/323912 co-relation queries the response was YES. [2024-06-28 01:03:12,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45860 conditions, 6449 events. 3637/6449 cut-off events. For 323909/323912 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 45172 event pairs, 1021 based on Foata normal form. 2/6104 useless extension candidates. Maximal degree in co-relation 45575. Up to 5752 conditions per place. [2024-06-28 01:03:12,264 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 630 selfloop transitions, 110 changer transitions 0/747 dead transitions. [2024-06-28 01:03:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 747 transitions, 13896 flow [2024-06-28 01:03:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:03:12,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 01:03:12,265 INFO L175 Difference]: Start difference. First operand has 612 places, 717 transitions, 12059 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:03:12,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 747 transitions, 13896 flow [2024-06-28 01:03:15,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 747 transitions, 13840 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:03:15,804 INFO L231 Difference]: Finished difference. Result has 611 places, 719 transitions, 12423 flow [2024-06-28 01:03:15,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12003, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12423, PETRI_PLACES=611, PETRI_TRANSITIONS=719} [2024-06-28 01:03:15,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 569 predicate places. [2024-06-28 01:03:15,804 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 719 transitions, 12423 flow [2024-06-28 01:03:15,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:15,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 01:03:15,805 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:15,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1307080596, now seen corresponding path program 23 times [2024-06-28 01:03:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:15,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849081921] [2024-06-28 01:03:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:17,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849081921] [2024-06-28 01:03:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849081921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982944132] [2024-06-28 01:03:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:17,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:17,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 719 transitions, 12423 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:17,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:17,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:17,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:20,120 INFO L124 PetriNetUnfolderBase]: 3650/6468 cut-off events. [2024-06-28 01:03:20,120 INFO L125 PetriNetUnfolderBase]: For 334347/334350 co-relation queries the response was YES. [2024-06-28 01:03:20,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46493 conditions, 6468 events. 3650/6468 cut-off events. For 334347/334350 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 45279 event pairs, 1000 based on Foata normal form. 2/6118 useless extension candidates. Maximal degree in co-relation 46207. Up to 5627 conditions per place. [2024-06-28 01:03:20,237 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 613 selfloop transitions, 131 changer transitions 0/751 dead transitions. [2024-06-28 01:03:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 751 transitions, 14188 flow [2024-06-28 01:03:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:03:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:03:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:03:20,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 01:03:20,239 INFO L175 Difference]: Start difference. First operand has 611 places, 719 transitions, 12423 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:03:20,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 751 transitions, 14188 flow [2024-06-28 01:03:23,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 751 transitions, 13788 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:23,493 INFO L231 Difference]: Finished difference. Result has 614 places, 721 transitions, 12413 flow [2024-06-28 01:03:23,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12023, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12413, PETRI_PLACES=614, PETRI_TRANSITIONS=721} [2024-06-28 01:03:23,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 572 predicate places. [2024-06-28 01:03:23,493 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 721 transitions, 12413 flow [2024-06-28 01:03:23,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:23,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:23,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:23,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 01:03:23,494 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:23,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1306811826, now seen corresponding path program 24 times [2024-06-28 01:03:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581766330] [2024-06-28 01:03:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:23,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581766330] [2024-06-28 01:03:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581766330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:25,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:25,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778857367] [2024-06-28 01:03:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:25,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:25,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 721 transitions, 12413 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:25,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:25,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:25,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:28,050 INFO L124 PetriNetUnfolderBase]: 3676/6505 cut-off events. [2024-06-28 01:03:28,051 INFO L125 PetriNetUnfolderBase]: For 326902/326905 co-relation queries the response was YES. [2024-06-28 01:03:28,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46546 conditions, 6505 events. 3676/6505 cut-off events. For 326902/326905 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 45525 event pairs, 995 based on Foata normal form. 2/6149 useless extension candidates. Maximal degree in co-relation 46259. Up to 5566 conditions per place. [2024-06-28 01:03:28,183 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 603 selfloop transitions, 148 changer transitions 0/758 dead transitions. [2024-06-28 01:03:28,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 758 transitions, 14506 flow [2024-06-28 01:03:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:03:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:03:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:03:28,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-28 01:03:28,184 INFO L175 Difference]: Start difference. First operand has 614 places, 721 transitions, 12413 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:03:28,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 758 transitions, 14506 flow [2024-06-28 01:03:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 758 transitions, 14154 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:03:31,466 INFO L231 Difference]: Finished difference. Result has 616 places, 725 transitions, 12507 flow [2024-06-28 01:03:31,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12061, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12507, PETRI_PLACES=616, PETRI_TRANSITIONS=725} [2024-06-28 01:03:31,467 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 574 predicate places. [2024-06-28 01:03:31,467 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 725 transitions, 12507 flow [2024-06-28 01:03:31,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:31,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:31,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:31,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 01:03:31,467 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:31,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 300464010, now seen corresponding path program 25 times [2024-06-28 01:03:31,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:31,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302075970] [2024-06-28 01:03:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302075970] [2024-06-28 01:03:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302075970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995473683] [2024-06-28 01:03:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:33,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:33,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 725 transitions, 12507 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:33,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:33,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:33,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:35,727 INFO L124 PetriNetUnfolderBase]: 3672/6500 cut-off events. [2024-06-28 01:03:35,727 INFO L125 PetriNetUnfolderBase]: For 308327/308330 co-relation queries the response was YES. [2024-06-28 01:03:35,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46135 conditions, 6500 events. 3672/6500 cut-off events. For 308327/308330 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 45528 event pairs, 877 based on Foata normal form. 2/6144 useless extension candidates. Maximal degree in co-relation 45847. Up to 4400 conditions per place. [2024-06-28 01:03:35,861 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 459 selfloop transitions, 288 changer transitions 0/754 dead transitions. [2024-06-28 01:03:35,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 754 transitions, 14397 flow [2024-06-28 01:03:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:03:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:03:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:03:35,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 01:03:35,862 INFO L175 Difference]: Start difference. First operand has 616 places, 725 transitions, 12507 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:03:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 754 transitions, 14397 flow [2024-06-28 01:03:39,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 754 transitions, 13246 flow, removed 95 selfloop flow, removed 14 redundant places. [2024-06-28 01:03:39,024 INFO L231 Difference]: Finished difference. Result has 613 places, 725 transitions, 11937 flow [2024-06-28 01:03:39,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11356, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11937, PETRI_PLACES=613, PETRI_TRANSITIONS=725} [2024-06-28 01:03:39,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 571 predicate places. [2024-06-28 01:03:39,024 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 725 transitions, 11937 flow [2024-06-28 01:03:39,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:39,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:39,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:39,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 01:03:39,025 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:39,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1286407712, now seen corresponding path program 26 times [2024-06-28 01:03:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460617616] [2024-06-28 01:03:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:39,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460617616] [2024-06-28 01:03:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460617616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:40,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917776579] [2024-06-28 01:03:40,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:40,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:40,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 725 transitions, 11937 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:40,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:40,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:40,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:43,286 INFO L124 PetriNetUnfolderBase]: 3685/6519 cut-off events. [2024-06-28 01:03:43,287 INFO L125 PetriNetUnfolderBase]: For 304783/304786 co-relation queries the response was YES. [2024-06-28 01:03:43,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45194 conditions, 6519 events. 3685/6519 cut-off events. For 304783/304786 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 45644 event pairs, 999 based on Foata normal form. 2/6160 useless extension candidates. Maximal degree in co-relation 44909. Up to 5678 conditions per place. [2024-06-28 01:03:43,405 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 617 selfloop transitions, 134 changer transitions 0/758 dead transitions. [2024-06-28 01:03:43,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 758 transitions, 13714 flow [2024-06-28 01:03:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:03:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:03:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:03:43,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-28 01:03:43,406 INFO L175 Difference]: Start difference. First operand has 613 places, 725 transitions, 11937 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:03:43,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 758 transitions, 13714 flow [2024-06-28 01:03:46,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 758 transitions, 13129 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:03:46,335 INFO L231 Difference]: Finished difference. Result has 614 places, 727 transitions, 11738 flow [2024-06-28 01:03:46,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11356, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11738, PETRI_PLACES=614, PETRI_TRANSITIONS=727} [2024-06-28 01:03:46,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 572 predicate places. [2024-06-28 01:03:46,335 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 727 transitions, 11738 flow [2024-06-28 01:03:46,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:46,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:46,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:46,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 01:03:46,336 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:46,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:46,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1286398071, now seen corresponding path program 3 times [2024-06-28 01:03:46,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:46,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943976101] [2024-06-28 01:03:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:46,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:48,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:48,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943976101] [2024-06-28 01:03:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943976101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:48,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:48,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051147770] [2024-06-28 01:03:48,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:48,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:48,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:48,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:48,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 727 transitions, 11738 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:48,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:48,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:48,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:50,744 INFO L124 PetriNetUnfolderBase]: 3682/6526 cut-off events. [2024-06-28 01:03:50,744 INFO L125 PetriNetUnfolderBase]: For 284926/284929 co-relation queries the response was YES. [2024-06-28 01:03:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44240 conditions, 6526 events. 3682/6526 cut-off events. For 284926/284929 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 45894 event pairs, 1152 based on Foata normal form. 4/6171 useless extension candidates. Maximal degree in co-relation 43954. Up to 5948 conditions per place. [2024-06-28 01:03:50,875 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 691 selfloop transitions, 55 changer transitions 0/753 dead transitions. [2024-06-28 01:03:50,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 753 transitions, 13534 flow [2024-06-28 01:03:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 01:03:50,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-06-28 01:03:50,877 INFO L175 Difference]: Start difference. First operand has 614 places, 727 transitions, 11738 flow. Second operand 10 states and 151 transitions. [2024-06-28 01:03:50,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 753 transitions, 13534 flow [2024-06-28 01:03:54,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 753 transitions, 13188 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 01:03:54,237 INFO L231 Difference]: Finished difference. Result has 615 places, 729 transitions, 11664 flow [2024-06-28 01:03:54,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11392, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11664, PETRI_PLACES=615, PETRI_TRANSITIONS=729} [2024-06-28 01:03:54,238 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 573 predicate places. [2024-06-28 01:03:54,238 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 729 transitions, 11664 flow [2024-06-28 01:03:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:54,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:54,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 01:03:54,239 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:03:54,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:54,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1314445762, now seen corresponding path program 38 times [2024-06-28 01:03:54,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:54,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512795109] [2024-06-28 01:03:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512795109] [2024-06-28 01:03:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512795109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454690642] [2024-06-28 01:03:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:55,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:03:55,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 729 transitions, 11664 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:55,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:55,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:03:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:58,052 INFO L124 PetriNetUnfolderBase]: 3690/6536 cut-off events. [2024-06-28 01:03:58,052 INFO L125 PetriNetUnfolderBase]: For 275189/275192 co-relation queries the response was YES. [2024-06-28 01:03:58,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43946 conditions, 6536 events. 3690/6536 cut-off events. For 275189/275192 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 45794 event pairs, 1014 based on Foata normal form. 2/6177 useless extension candidates. Maximal degree in co-relation 43659. Up to 5779 conditions per place. [2024-06-28 01:03:58,192 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 647 selfloop transitions, 110 changer transitions 0/764 dead transitions. [2024-06-28 01:03:58,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 764 transitions, 13631 flow [2024-06-28 01:03:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:03:58,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 01:03:58,194 INFO L175 Difference]: Start difference. First operand has 615 places, 729 transitions, 11664 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:03:58,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 764 transitions, 13631 flow [2024-06-28 01:04:01,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 764 transitions, 13377 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:01,706 INFO L231 Difference]: Finished difference. Result has 618 places, 732 transitions, 11904 flow [2024-06-28 01:04:01,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11412, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11904, PETRI_PLACES=618, PETRI_TRANSITIONS=732} [2024-06-28 01:04:01,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 576 predicate places. [2024-06-28 01:04:01,706 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 732 transitions, 11904 flow [2024-06-28 01:04:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:01,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:01,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 01:04:01,707 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:01,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1293817022, now seen corresponding path program 27 times [2024-06-28 01:04:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421044544] [2024-06-28 01:04:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:01,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421044544] [2024-06-28 01:04:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421044544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:03,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:03,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964425891] [2024-06-28 01:04:03,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:03,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:03,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 732 transitions, 11904 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:03,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:03,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:05,820 INFO L124 PetriNetUnfolderBase]: 3686/6530 cut-off events. [2024-06-28 01:04:05,821 INFO L125 PetriNetUnfolderBase]: For 253243/253246 co-relation queries the response was YES. [2024-06-28 01:04:05,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43591 conditions, 6530 events. 3686/6530 cut-off events. For 253243/253246 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 45766 event pairs, 1029 based on Foata normal form. 2/6169 useless extension candidates. Maximal degree in co-relation 43302. Up to 5811 conditions per place. [2024-06-28 01:04:05,960 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 640 selfloop transitions, 114 changer transitions 0/761 dead transitions. [2024-06-28 01:04:05,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 761 transitions, 13565 flow [2024-06-28 01:04:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:04:05,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-28 01:04:05,961 INFO L175 Difference]: Start difference. First operand has 618 places, 732 transitions, 11904 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:04:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 761 transitions, 13565 flow [2024-06-28 01:04:09,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 761 transitions, 13039 flow, removed 160 selfloop flow, removed 7 redundant places. [2024-06-28 01:04:09,561 INFO L231 Difference]: Finished difference. Result has 622 places, 732 transitions, 11614 flow [2024-06-28 01:04:09,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11378, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11614, PETRI_PLACES=622, PETRI_TRANSITIONS=732} [2024-06-28 01:04:09,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 580 predicate places. [2024-06-28 01:04:09,562 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 732 transitions, 11614 flow [2024-06-28 01:04:09,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:09,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:09,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:09,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 01:04:09,562 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:09,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 377684286, now seen corresponding path program 1 times [2024-06-28 01:04:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:09,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855624024] [2024-06-28 01:04:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:09,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:11,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:11,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855624024] [2024-06-28 01:04:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855624024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:11,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:04:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635387296] [2024-06-28 01:04:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:11,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:04:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:04:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:04:11,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:11,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 732 transitions, 11614 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:11,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:11,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:13,809 INFO L124 PetriNetUnfolderBase]: 3710/6592 cut-off events. [2024-06-28 01:04:13,809 INFO L125 PetriNetUnfolderBase]: For 244733/244733 co-relation queries the response was YES. [2024-06-28 01:04:13,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43308 conditions, 6592 events. 3710/6592 cut-off events. For 244733/244733 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 46445 event pairs, 1005 based on Foata normal form. 2/6232 useless extension candidates. Maximal degree in co-relation 43018. Up to 5727 conditions per place. [2024-06-28 01:04:13,936 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 670 selfloop transitions, 104 changer transitions 0/781 dead transitions. [2024-06-28 01:04:13,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 781 transitions, 13608 flow [2024-06-28 01:04:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:04:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:04:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-06-28 01:04:13,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40601503759398494 [2024-06-28 01:04:13,937 INFO L175 Difference]: Start difference. First operand has 622 places, 732 transitions, 11614 flow. Second operand 14 states and 216 transitions. [2024-06-28 01:04:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 781 transitions, 13608 flow [2024-06-28 01:04:16,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 781 transitions, 13308 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 01:04:16,825 INFO L231 Difference]: Finished difference. Result has 625 places, 734 transitions, 11641 flow [2024-06-28 01:04:16,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11314, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11641, PETRI_PLACES=625, PETRI_TRANSITIONS=734} [2024-06-28 01:04:16,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 583 predicate places. [2024-06-28 01:04:16,826 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 734 transitions, 11641 flow [2024-06-28 01:04:16,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:16,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:16,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 01:04:16,826 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:16,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1657174590, now seen corresponding path program 2 times [2024-06-28 01:04:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489658701] [2024-06-28 01:04:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489658701] [2024-06-28 01:04:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489658701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:18,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:18,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:18,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118123302] [2024-06-28 01:04:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:18,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:18,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 734 transitions, 11641 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:18,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:18,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:20,872 INFO L124 PetriNetUnfolderBase]: 3726/6602 cut-off events. [2024-06-28 01:04:20,872 INFO L125 PetriNetUnfolderBase]: For 244547/244547 co-relation queries the response was YES. [2024-06-28 01:04:20,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43607 conditions, 6602 events. 3726/6602 cut-off events. For 244547/244547 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 46406 event pairs, 1001 based on Foata normal form. 2/6244 useless extension candidates. Maximal degree in co-relation 43317. Up to 5690 conditions per place. [2024-06-28 01:04:21,006 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 581 selfloop transitions, 180 changer transitions 0/768 dead transitions. [2024-06-28 01:04:21,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 768 transitions, 13467 flow [2024-06-28 01:04:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:04:21,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-28 01:04:21,007 INFO L175 Difference]: Start difference. First operand has 625 places, 734 transitions, 11641 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:04:21,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 768 transitions, 13467 flow [2024-06-28 01:04:24,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 768 transitions, 13190 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-06-28 01:04:24,107 INFO L231 Difference]: Finished difference. Result has 625 places, 736 transitions, 11891 flow [2024-06-28 01:04:24,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11364, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11891, PETRI_PLACES=625, PETRI_TRANSITIONS=736} [2024-06-28 01:04:24,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 583 predicate places. [2024-06-28 01:04:24,107 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 736 transitions, 11891 flow [2024-06-28 01:04:24,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:24,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:24,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:24,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 01:04:24,108 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:24,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1574282574, now seen corresponding path program 3 times [2024-06-28 01:04:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254703676] [2024-06-28 01:04:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:25,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254703676] [2024-06-28 01:04:25,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254703676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:25,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:25,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:04:25,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350732023] [2024-06-28 01:04:25,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:04:25,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:04:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:04:25,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:25,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 736 transitions, 11891 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:25,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:25,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:25,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:28,161 INFO L124 PetriNetUnfolderBase]: 3770/6720 cut-off events. [2024-06-28 01:04:28,162 INFO L125 PetriNetUnfolderBase]: For 263648/263648 co-relation queries the response was YES. [2024-06-28 01:04:28,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44754 conditions, 6720 events. 3770/6720 cut-off events. For 263648/263648 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 47638 event pairs, 1131 based on Foata normal form. 2/6360 useless extension candidates. Maximal degree in co-relation 44463. Up to 5992 conditions per place. [2024-06-28 01:04:28,302 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 671 selfloop transitions, 101 changer transitions 0/779 dead transitions. [2024-06-28 01:04:28,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 779 transitions, 14023 flow [2024-06-28 01:04:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:04:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:04:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-06-28 01:04:28,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 01:04:28,303 INFO L175 Difference]: Start difference. First operand has 625 places, 736 transitions, 11891 flow. Second operand 14 states and 209 transitions. [2024-06-28 01:04:28,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 779 transitions, 14023 flow [2024-06-28 01:04:32,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 779 transitions, 13380 flow, removed 146 selfloop flow, removed 9 redundant places. [2024-06-28 01:04:32,269 INFO L231 Difference]: Finished difference. Result has 631 places, 740 transitions, 11767 flow [2024-06-28 01:04:32,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11396, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11767, PETRI_PLACES=631, PETRI_TRANSITIONS=740} [2024-06-28 01:04:32,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 589 predicate places. [2024-06-28 01:04:32,269 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 740 transitions, 11767 flow [2024-06-28 01:04:32,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:32,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:32,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:32,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 01:04:32,270 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:32,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1633223370, now seen corresponding path program 4 times [2024-06-28 01:04:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659289558] [2024-06-28 01:04:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:33,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:33,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659289558] [2024-06-28 01:04:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659289558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:33,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174603544] [2024-06-28 01:04:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:33,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:33,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 740 transitions, 11767 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:33,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:33,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:33,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:36,147 INFO L124 PetriNetUnfolderBase]: 3794/6751 cut-off events. [2024-06-28 01:04:36,147 INFO L125 PetriNetUnfolderBase]: For 261578/261578 co-relation queries the response was YES. [2024-06-28 01:04:36,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44719 conditions, 6751 events. 3794/6751 cut-off events. For 261578/261578 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 47815 event pairs, 976 based on Foata normal form. 2/6387 useless extension candidates. Maximal degree in co-relation 44426. Up to 5737 conditions per place. [2024-06-28 01:04:36,282 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 628 selfloop transitions, 145 changer transitions 0/780 dead transitions. [2024-06-28 01:04:36,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 780 transitions, 13741 flow [2024-06-28 01:04:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:04:36,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-28 01:04:36,284 INFO L175 Difference]: Start difference. First operand has 631 places, 740 transitions, 11767 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:04:36,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 780 transitions, 13741 flow [2024-06-28 01:04:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 780 transitions, 13498 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-28 01:04:39,603 INFO L231 Difference]: Finished difference. Result has 633 places, 743 transitions, 12070 flow [2024-06-28 01:04:39,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11524, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12070, PETRI_PLACES=633, PETRI_TRANSITIONS=743} [2024-06-28 01:04:39,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 591 predicate places. [2024-06-28 01:04:39,603 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 743 transitions, 12070 flow [2024-06-28 01:04:39,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:39,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:39,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:39,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 01:04:39,604 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:39,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1578924204, now seen corresponding path program 5 times [2024-06-28 01:04:39,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:39,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812902888] [2024-06-28 01:04:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812902888] [2024-06-28 01:04:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812902888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:41,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:04:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427853207] [2024-06-28 01:04:41,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:41,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:04:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:04:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:04:41,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:41,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 743 transitions, 12070 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:41,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:41,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:41,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:43,788 INFO L124 PetriNetUnfolderBase]: 3818/6811 cut-off events. [2024-06-28 01:04:43,789 INFO L125 PetriNetUnfolderBase]: For 271475/271475 co-relation queries the response was YES. [2024-06-28 01:04:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45574 conditions, 6811 events. 3818/6811 cut-off events. For 271475/271475 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 48463 event pairs, 1143 based on Foata normal form. 2/6442 useless extension candidates. Maximal degree in co-relation 45278. Up to 6073 conditions per place. [2024-06-28 01:04:43,930 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 697 selfloop transitions, 84 changer transitions 0/788 dead transitions. [2024-06-28 01:04:43,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 788 transitions, 14079 flow [2024-06-28 01:04:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:04:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:04:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 211 transitions. [2024-06-28 01:04:43,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966165413533835 [2024-06-28 01:04:43,931 INFO L175 Difference]: Start difference. First operand has 633 places, 743 transitions, 12070 flow. Second operand 14 states and 211 transitions. [2024-06-28 01:04:43,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 788 transitions, 14079 flow [2024-06-28 01:04:47,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 788 transitions, 13593 flow, removed 108 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:47,960 INFO L231 Difference]: Finished difference. Result has 640 places, 746 transitions, 12006 flow [2024-06-28 01:04:47,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11584, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12006, PETRI_PLACES=640, PETRI_TRANSITIONS=746} [2024-06-28 01:04:47,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 598 predicate places. [2024-06-28 01:04:47,961 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 746 transitions, 12006 flow [2024-06-28 01:04:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:04:47,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:47,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 01:04:47,962 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:47,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1742157590, now seen corresponding path program 6 times [2024-06-28 01:04:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:47,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428728173] [2024-06-28 01:04:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:47,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:49,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:49,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428728173] [2024-06-28 01:04:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428728173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:49,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857791960] [2024-06-28 01:04:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:49,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:49,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:49,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 746 transitions, 12006 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:49,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:49,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:49,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:52,074 INFO L124 PetriNetUnfolderBase]: 3876/6924 cut-off events. [2024-06-28 01:04:52,075 INFO L125 PetriNetUnfolderBase]: For 279166/279166 co-relation queries the response was YES. [2024-06-28 01:04:52,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46192 conditions, 6924 events. 3876/6924 cut-off events. For 279166/279166 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 49479 event pairs, 721 based on Foata normal form. 2/6586 useless extension candidates. Maximal degree in co-relation 45894. Up to 5675 conditions per place. [2024-06-28 01:04:52,222 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 632 selfloop transitions, 158 changer transitions 0/797 dead transitions. [2024-06-28 01:04:52,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 797 transitions, 14112 flow [2024-06-28 01:04:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:04:52,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-28 01:04:52,223 INFO L175 Difference]: Start difference. First operand has 640 places, 746 transitions, 12006 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:04:52,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 797 transitions, 14112 flow [2024-06-28 01:04:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 797 transitions, 13742 flow, removed 113 selfloop flow, removed 10 redundant places. [2024-06-28 01:04:56,263 INFO L231 Difference]: Finished difference. Result has 643 places, 758 transitions, 12373 flow [2024-06-28 01:04:56,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11636, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12373, PETRI_PLACES=643, PETRI_TRANSITIONS=758} [2024-06-28 01:04:56,263 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 601 predicate places. [2024-06-28 01:04:56,263 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 758 transitions, 12373 flow [2024-06-28 01:04:56,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:56,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:56,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:56,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 01:04:56,264 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:04:56,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 62243580, now seen corresponding path program 1 times [2024-06-28 01:04:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158562791] [2024-06-28 01:04:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:57,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158562791] [2024-06-28 01:04:57,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158562791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:57,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:57,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490021773] [2024-06-28 01:04:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:57,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:58,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:04:58,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 758 transitions, 12373 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:58,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:58,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:04:58,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:00,640 INFO L124 PetriNetUnfolderBase]: 3883/6932 cut-off events. [2024-06-28 01:05:00,640 INFO L125 PetriNetUnfolderBase]: For 270033/270033 co-relation queries the response was YES. [2024-06-28 01:05:00,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46967 conditions, 6932 events. 3883/6932 cut-off events. For 270033/270033 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 49477 event pairs, 1086 based on Foata normal form. 1/6554 useless extension candidates. Maximal degree in co-relation 46666. Up to 5906 conditions per place. [2024-06-28 01:05:00,790 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 593 selfloop transitions, 187 changer transitions 0/787 dead transitions. [2024-06-28 01:05:00,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 787 transitions, 14151 flow [2024-06-28 01:05:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:05:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:05:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:05:00,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-06-28 01:05:00,791 INFO L175 Difference]: Start difference. First operand has 643 places, 758 transitions, 12373 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:05:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 787 transitions, 14151 flow [2024-06-28 01:05:05,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 787 transitions, 13709 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-28 01:05:05,108 INFO L231 Difference]: Finished difference. Result has 647 places, 760 transitions, 12448 flow [2024-06-28 01:05:05,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11931, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12448, PETRI_PLACES=647, PETRI_TRANSITIONS=760} [2024-06-28 01:05:05,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 605 predicate places. [2024-06-28 01:05:05,109 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 760 transitions, 12448 flow [2024-06-28 01:05:05,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:05,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:05,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:05,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 01:05:05,109 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:05,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:05,110 INFO L85 PathProgramCache]: Analyzing trace with hash 345576946, now seen corresponding path program 1 times [2024-06-28 01:05:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:05,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369121082] [2024-06-28 01:05:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369121082] [2024-06-28 01:05:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369121082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:07,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:07,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342064783] [2024-06-28 01:05:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:07,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:07,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:07,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 760 transitions, 12448 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:07,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:07,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:10,461 INFO L124 PetriNetUnfolderBase]: 3951/7076 cut-off events. [2024-06-28 01:05:10,461 INFO L125 PetriNetUnfolderBase]: For 371934/371934 co-relation queries the response was YES. [2024-06-28 01:05:10,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47834 conditions, 7076 events. 3951/7076 cut-off events. For 371934/371934 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 50825 event pairs, 1248 based on Foata normal form. 10/6710 useless extension candidates. Maximal degree in co-relation 47532. Up to 6331 conditions per place. [2024-06-28 01:05:10,592 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 720 selfloop transitions, 74 changer transitions 0/801 dead transitions. [2024-06-28 01:05:10,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 801 transitions, 14370 flow [2024-06-28 01:05:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 01:05:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 01:05:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 219 transitions. [2024-06-28 01:05:10,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38421052631578945 [2024-06-28 01:05:10,595 INFO L175 Difference]: Start difference. First operand has 647 places, 760 transitions, 12448 flow. Second operand 15 states and 219 transitions. [2024-06-28 01:05:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 801 transitions, 14370 flow [2024-06-28 01:05:14,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 801 transitions, 13997 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:05:14,714 INFO L231 Difference]: Finished difference. Result has 654 places, 761 transitions, 12358 flow [2024-06-28 01:05:14,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12075, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12358, PETRI_PLACES=654, PETRI_TRANSITIONS=761} [2024-06-28 01:05:14,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 612 predicate places. [2024-06-28 01:05:14,715 INFO L495 AbstractCegarLoop]: Abstraction has has 654 places, 761 transitions, 12358 flow [2024-06-28 01:05:14,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:14,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:14,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:14,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 01:05:14,715 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:14,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash 340558808, now seen corresponding path program 7 times [2024-06-28 01:05:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:14,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29309909] [2024-06-28 01:05:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29309909] [2024-06-28 01:05:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29309909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:16,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:16,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804373469] [2024-06-28 01:05:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:16,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:16,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:16,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 761 transitions, 12358 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:16,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:16,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:16,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:19,778 INFO L124 PetriNetUnfolderBase]: 3977/7109 cut-off events. [2024-06-28 01:05:19,778 INFO L125 PetriNetUnfolderBase]: For 295558/295558 co-relation queries the response was YES. [2024-06-28 01:05:19,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48035 conditions, 7109 events. 3977/7109 cut-off events. For 295558/295558 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 51097 event pairs, 1201 based on Foata normal form. 2/6730 useless extension candidates. Maximal degree in co-relation 47732. Up to 6484 conditions per place. [2024-06-28 01:05:19,917 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 703 selfloop transitions, 85 changer transitions 0/795 dead transitions. [2024-06-28 01:05:19,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 795 transitions, 14257 flow [2024-06-28 01:05:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:05:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:05:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-28 01:05:19,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969298245614035 [2024-06-28 01:05:19,918 INFO L175 Difference]: Start difference. First operand has 654 places, 761 transitions, 12358 flow. Second operand 12 states and 181 transitions. [2024-06-28 01:05:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 795 transitions, 14257 flow [2024-06-28 01:05:23,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 795 transitions, 14024 flow, removed 54 selfloop flow, removed 11 redundant places. [2024-06-28 01:05:23,756 INFO L231 Difference]: Finished difference. Result has 655 places, 765 transitions, 12494 flow [2024-06-28 01:05:23,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12125, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12494, PETRI_PLACES=655, PETRI_TRANSITIONS=765} [2024-06-28 01:05:23,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 613 predicate places. [2024-06-28 01:05:23,756 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 765 transitions, 12494 flow [2024-06-28 01:05:23,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:23,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:23,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 01:05:23,757 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:23,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -466077002, now seen corresponding path program 8 times [2024-06-28 01:05:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:23,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648356604] [2024-06-28 01:05:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:25,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:25,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648356604] [2024-06-28 01:05:25,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648356604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:25,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:25,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244697024] [2024-06-28 01:05:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:25,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:25,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:25,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 765 transitions, 12494 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:25,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:25,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:25,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,162 INFO L124 PetriNetUnfolderBase]: 4019/7199 cut-off events. [2024-06-28 01:05:29,162 INFO L125 PetriNetUnfolderBase]: For 296817/296817 co-relation queries the response was YES. [2024-06-28 01:05:29,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48693 conditions, 7199 events. 4019/7199 cut-off events. For 296817/296817 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 51962 event pairs, 1205 based on Foata normal form. 2/6816 useless extension candidates. Maximal degree in co-relation 48389. Up to 6513 conditions per place. [2024-06-28 01:05:29,462 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 717 selfloop transitions, 80 changer transitions 0/804 dead transitions. [2024-06-28 01:05:29,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 804 transitions, 14537 flow [2024-06-28 01:05:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:05:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:05:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 01:05:29,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-28 01:05:29,463 INFO L175 Difference]: Start difference. First operand has 655 places, 765 transitions, 12494 flow. Second operand 12 states and 185 transitions. [2024-06-28 01:05:29,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 804 transitions, 14537 flow [2024-06-28 01:05:33,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 804 transitions, 14229 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:33,389 INFO L231 Difference]: Finished difference. Result has 659 places, 770 transitions, 12650 flow [2024-06-28 01:05:33,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12186, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12650, PETRI_PLACES=659, PETRI_TRANSITIONS=770} [2024-06-28 01:05:33,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 617 predicate places. [2024-06-28 01:05:33,389 INFO L495 AbstractCegarLoop]: Abstraction has has 659 places, 770 transitions, 12650 flow [2024-06-28 01:05:33,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:33,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:33,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 01:05:33,390 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:33,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2069426652, now seen corresponding path program 9 times [2024-06-28 01:05:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:33,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547559428] [2024-06-28 01:05:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:35,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547559428] [2024-06-28 01:05:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547559428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:35,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:35,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:35,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374919846] [2024-06-28 01:05:35,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:35,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:35,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 770 transitions, 12650 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:35,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:35,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,517 INFO L124 PetriNetUnfolderBase]: 4061/7289 cut-off events. [2024-06-28 01:05:38,518 INFO L125 PetriNetUnfolderBase]: For 306649/306649 co-relation queries the response was YES. [2024-06-28 01:05:38,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49430 conditions, 7289 events. 4061/7289 cut-off events. For 306649/306649 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 52892 event pairs, 1205 based on Foata normal form. 2/6902 useless extension candidates. Maximal degree in co-relation 49124. Up to 6539 conditions per place. [2024-06-28 01:05:38,695 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 733 selfloop transitions, 73 changer transitions 0/813 dead transitions. [2024-06-28 01:05:38,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 813 transitions, 14744 flow [2024-06-28 01:05:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:05:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:05:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 01:05:38,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2024-06-28 01:05:38,697 INFO L175 Difference]: Start difference. First operand has 659 places, 770 transitions, 12650 flow. Second operand 12 states and 188 transitions. [2024-06-28 01:05:38,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 813 transitions, 14744 flow [2024-06-28 01:05:43,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 813 transitions, 14351 flow, removed 125 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:43,595 INFO L231 Difference]: Finished difference. Result has 663 places, 776 transitions, 12711 flow [2024-06-28 01:05:43,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12257, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12711, PETRI_PLACES=663, PETRI_TRANSITIONS=776} [2024-06-28 01:05:43,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 621 predicate places. [2024-06-28 01:05:43,596 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 776 transitions, 12711 flow [2024-06-28 01:05:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:43,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:43,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 01:05:43,596 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:43,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 335910668, now seen corresponding path program 10 times [2024-06-28 01:05:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:43,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126730892] [2024-06-28 01:05:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126730892] [2024-06-28 01:05:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126730892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522697654] [2024-06-28 01:05:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:45,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:45,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:45,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 776 transitions, 12711 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:45,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:45,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:45,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:48,349 INFO L124 PetriNetUnfolderBase]: 4103/7385 cut-off events. [2024-06-28 01:05:48,349 INFO L125 PetriNetUnfolderBase]: For 308555/308555 co-relation queries the response was YES. [2024-06-28 01:05:48,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49767 conditions, 7385 events. 4103/7385 cut-off events. For 308555/308555 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 53770 event pairs, 1215 based on Foata normal form. 2/6993 useless extension candidates. Maximal degree in co-relation 49459. Up to 6586 conditions per place. [2024-06-28 01:05:48,650 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 747 selfloop transitions, 67 changer transitions 0/821 dead transitions. [2024-06-28 01:05:48,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 821 transitions, 14833 flow [2024-06-28 01:05:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:05:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:05:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:05:48,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-28 01:05:48,651 INFO L175 Difference]: Start difference. First operand has 663 places, 776 transitions, 12711 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:05:48,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 821 transitions, 14833 flow [2024-06-28 01:05:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 821 transitions, 14455 flow, removed 124 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:53,246 INFO L231 Difference]: Finished difference. Result has 667 places, 780 transitions, 12633 flow [2024-06-28 01:05:53,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12333, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12633, PETRI_PLACES=667, PETRI_TRANSITIONS=780} [2024-06-28 01:05:53,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 625 predicate places. [2024-06-28 01:05:53,247 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 780 transitions, 12633 flow [2024-06-28 01:05:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:53,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:53,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:53,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 01:05:53,247 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:05:53,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash 264092052, now seen corresponding path program 11 times [2024-06-28 01:05:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898490446] [2024-06-28 01:05:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:54,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898490446] [2024-06-28 01:05:54,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898490446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:54,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:54,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 01:05:54,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908854154] [2024-06-28 01:05:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:05:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:05:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:05:55,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-28 01:05:55,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 780 transitions, 12633 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:05:55,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:55,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-28 01:05:55,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:58,617 INFO L124 PetriNetUnfolderBase]: 4162/7512 cut-off events. [2024-06-28 01:05:58,617 INFO L125 PetriNetUnfolderBase]: For 318399/318399 co-relation queries the response was YES. [2024-06-28 01:05:58,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50592 conditions, 7512 events. 4162/7512 cut-off events. For 318399/318399 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 55066 event pairs, 1197 based on Foata normal form. 2/7111 useless extension candidates. Maximal degree in co-relation 50282. Up to 6560 conditions per place. [2024-06-28 01:05:58,770 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 736 selfloop transitions, 88 changer transitions 0/831 dead transitions. [2024-06-28 01:05:58,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 831 transitions, 14827 flow [2024-06-28 01:05:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:05:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:05:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-28 01:05:58,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149797570850202 [2024-06-28 01:05:58,771 INFO L175 Difference]: Start difference. First operand has 667 places, 780 transitions, 12633 flow. Second operand 13 states and 205 transitions. [2024-06-28 01:05:58,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 831 transitions, 14827 flow [2024-06-28 01:06:03,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 831 transitions, 14607 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 01:06:03,348 INFO L231 Difference]: Finished difference. Result has 672 places, 788 transitions, 12942 flow [2024-06-28 01:06:03,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12413, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12942, PETRI_PLACES=672, PETRI_TRANSITIONS=788} [2024-06-28 01:06:03,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 630 predicate places. [2024-06-28 01:06:03,348 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 788 transitions, 12942 flow [2024-06-28 01:06:03,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 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) [2024-06-28 01:06:03,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:03,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 01:06:03,348 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:06:03,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -346180910, now seen corresponding path program 2 times [2024-06-28 01:06:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970874341] [2024-06-28 01:06:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat