./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.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/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:15:14,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:15:14,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:15:14,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:15:14,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:15:14,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:15:14,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:15:14,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:15:14,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:15:14,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:15:14,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:15:14,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:15:14,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:15:14,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:15:14,727 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:15:14,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:15:14,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:15:14,728 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:15:14,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:15:14,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:15:14,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:15:14,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:15:14,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:15:14,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:15:14,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:15:14,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:15:14,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:15:14,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:15:14,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:15:14,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:15:14,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:15:14,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:15:14,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:15:14,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:15:14,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:15:14,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:15:14,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:15:14,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:15:14,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:15:14,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:15:14,989 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:15:14,989 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:15:14,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.oepc.yml/witness.yml [2024-06-28 01:15:15,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:15:15,097 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:15:15,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-28 01:15:16,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:15:16,335 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:15:16,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-28 01:15:16,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d1ff17d/b38854945381421195ece7a370833fe9/FLAG027d49a46 [2024-06-28 01:15:16,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d1ff17d/b38854945381421195ece7a370833fe9 [2024-06-28 01:15:16,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:15:16,360 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:15:16,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:15:16,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:15:16,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:15:16,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:15" (1/2) ... [2024-06-28 01:15:16,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db14e89 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:15:16, skipping insertion in model container [2024-06-28 01:15:16,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:15" (1/2) ... [2024-06-28 01:15:16,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60f21c72 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:15:16, skipping insertion in model container [2024-06-28 01:15:16,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:15:16" (2/2) ... [2024-06-28 01:15:16,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db14e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16, skipping insertion in model container [2024-06-28 01:15:16,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:15:16" (2/2) ... [2024-06-28 01:15:16,368 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:15:16,416 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:15:16,417 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:15:16,417 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:15:16,417 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:15:16,417 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 01:15:16,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:15:16,598 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/mix000.oepc.i[988,1001] [2024-06-28 01:15:16,766 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:15:16,779 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:15:16,808 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/mix000.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:15:16,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:15:16,912 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:15:16,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16 WrapperNode [2024-06-28 01:15:16,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:15:16,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:15:16,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:15:16,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:15:16,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,964 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-28 01:15:16,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:15:16,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:15:16,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:15:16,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:15:16,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,989 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 01:15:16,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:16,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:15:17,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:15:17,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:15:17,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:15:17,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (1/1) ... [2024-06-28 01:15:17,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:15:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:15:17,032 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 01:15:17,052 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 01:15:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:15:17,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:15:17,067 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:15:17,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:15:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:15:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:15:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:15:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:15:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:15:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:15:17,070 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 01:15:17,188 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:15:17,189 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:15:17,455 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:15:17,456 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:15:17,639 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:15:17,639 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:15:17,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:15:17 BoogieIcfgContainer [2024-06-28 01:15:17,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:15:17,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:15:17,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:15:17,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:15:17,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:15:15" (1/4) ... [2024-06-28 01:15:17,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fe9e0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:15:17, skipping insertion in model container [2024-06-28 01:15:17,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:15:16" (2/4) ... [2024-06-28 01:15:17,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fe9e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:15:17, skipping insertion in model container [2024-06-28 01:15:17,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:15:16" (3/4) ... [2024-06-28 01:15:17,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fe9e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:15:17, skipping insertion in model container [2024-06-28 01:15:17,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:15:17" (4/4) ... [2024-06-28 01:15:17,648 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-28 01:15:17,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:15:17,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:15:17,661 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:15:17,694 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:15:17,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:15:17,750 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:15:17,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:15:17,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:15:17,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:15:17,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:15:17,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:15:17,774 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;@2b8b8e90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:15:17,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:15:17,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:15:17,779 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:15:17,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:15:17,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:17,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:15:17,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:17,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 351384175, now seen corresponding path program 1 times [2024-06-28 01:15:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:17,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022596197] [2024-06-28 01:15:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:18,594 INFO 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 01:15:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022596197] [2024-06-28 01:15:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022596197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:15:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067082157] [2024-06-28 01:15:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:15:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:15:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:15:18,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:15:18,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:18,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:18,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:15:18,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:18,897 INFO L124 PetriNetUnfolderBase]: 475/961 cut-off events. [2024-06-28 01:15:18,897 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 01:15:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 961 events. 475/961 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5428 event pairs, 334 based on Foata normal form. 36/899 useless extension candidates. Maximal degree in co-relation 1766. Up to 787 conditions per place. [2024-06-28 01:15:18,906 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:15:18,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2024-06-28 01:15:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:15:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:15:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 01:15:18,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-28 01:15:18,917 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-28 01:15:18,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2024-06-28 01:15:18,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:18,922 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:15:18,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:15:18,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:15:18,927 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:15:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:18,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:18,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:15:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:15:18,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:18,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 351384258, now seen corresponding path program 1 times [2024-06-28 01:15:18,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:18,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67136375] [2024-06-28 01:15:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67136375] [2024-06-28 01:15:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67136375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:18,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:18,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:15:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762575173] [2024-06-28 01:15:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:15:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:15:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:15:19,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 37 [2024-06-28 01:15:19,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 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 01:15:19,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:19,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 37 [2024-06-28 01:15:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:19,097 INFO L124 PetriNetUnfolderBase]: 219/526 cut-off events. [2024-06-28 01:15:19,098 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:15:19,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 526 events. 219/526 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2984 event pairs, 130 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 969. Up to 340 conditions per place. [2024-06-28 01:15:19,101 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 24 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-06-28 01:15:19,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-28 01:15:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:15:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:15:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-28 01:15:19,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-28 01:15:19,104 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-06-28 01:15:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-28 01:15:19,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:15:19,106 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-28 01:15:19,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 01:15:19,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:15:19,108 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-28 01:15:19,108 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 01:15:19,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:19,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:19,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:15:19,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:19,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1622136343, now seen corresponding path program 1 times [2024-06-28 01:15:19,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:19,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443344245] [2024-06-28 01:15:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:19,586 INFO 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 01:15:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443344245] [2024-06-28 01:15:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443344245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:19,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:15:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124929206] [2024-06-28 01:15:19,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:15:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:19,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:15:19,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:15:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:15:19,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:19,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:19,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:15:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:19,747 INFO L124 PetriNetUnfolderBase]: 342/721 cut-off events. [2024-06-28 01:15:19,747 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-28 01:15:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 721 events. 342/721 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3826 event pairs, 218 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 1459. Up to 562 conditions per place. [2024-06-28 01:15:19,751 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-28 01:15:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 218 flow [2024-06-28 01:15:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:15:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:15:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 01:15:19,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-28 01:15:19,753 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 92 transitions. [2024-06-28 01:15:19,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 218 flow [2024-06-28 01:15:19,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:19,754 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-28 01:15:19,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:15:19,755 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-28 01:15:19,755 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-28 01:15:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:19,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:19,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:19,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:15:19,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:19,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1253381954, now seen corresponding path program 1 times [2024-06-28 01:15:19,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:19,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704936095] [2024-06-28 01:15:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:19,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:20,374 INFO 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 01:15:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:20,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704936095] [2024-06-28 01:15:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704936095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:20,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:15:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578657569] [2024-06-28 01:15:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:20,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:15:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:15:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:15:20,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:15:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:20,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:15:20,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:20,611 INFO L124 PetriNetUnfolderBase]: 342/729 cut-off events. [2024-06-28 01:15:20,611 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2024-06-28 01:15:20,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 729 events. 342/729 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3899 event pairs, 143 based on Foata normal form. 4/703 useless extension candidates. Maximal degree in co-relation 1606. Up to 532 conditions per place. [2024-06-28 01:15:20,615 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 42 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 01:15:20,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 293 flow [2024-06-28 01:15:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:15:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:15:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:15:20,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-28 01:15:20,616 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:15:20,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 293 flow [2024-06-28 01:15:20,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 286 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:15:20,619 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 163 flow [2024-06-28 01:15:20,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 01:15:20,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-28 01:15:20,619 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 163 flow [2024-06-28 01:15:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:20,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:20,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:20,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:15:20,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:20,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash -339406244, now seen corresponding path program 1 times [2024-06-28 01:15:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458618729] [2024-06-28 01:15:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:21,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458618729] [2024-06-28 01:15:21,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458618729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:21,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:21,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:15:21,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562038656] [2024-06-28 01:15:21,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:15:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:15:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:15:21,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:21,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:21,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:21,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:21,355 INFO L124 PetriNetUnfolderBase]: 559/1100 cut-off events. [2024-06-28 01:15:21,355 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-06-28 01:15:21,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1100 events. 559/1100 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5910 event pairs, 254 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 2585. Up to 908 conditions per place. [2024-06-28 01:15:21,360 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 40 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-06-28 01:15:21,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 293 flow [2024-06-28 01:15:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:15:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:15:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 01:15:21,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:15:21,362 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 163 flow. Second operand 5 states and 88 transitions. [2024-06-28 01:15:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 293 flow [2024-06-28 01:15:21,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 276 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:21,364 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 178 flow [2024-06-28 01:15:21,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 01:15:21,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:15:21,365 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 178 flow [2024-06-28 01:15:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:21,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:21,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:21,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:15:21,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:21,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -942820249, now seen corresponding path program 1 times [2024-06-28 01:15:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8023959] [2024-06-28 01:15:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:22,537 INFO 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 01:15:22,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:22,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8023959] [2024-06-28 01:15:22,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8023959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:22,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:22,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:22,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265112963] [2024-06-28 01:15:22,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:22,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:22,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:22,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:15:22,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:22,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:22,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:15:22,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:22,936 INFO L124 PetriNetUnfolderBase]: 427/867 cut-off events. [2024-06-28 01:15:22,937 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-06-28 01:15:22,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 867 events. 427/867 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4642 event pairs, 72 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 2128. Up to 618 conditions per place. [2024-06-28 01:15:22,941 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 61 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-28 01:15:22,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 434 flow [2024-06-28 01:15:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 01:15:22,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709459459459459 [2024-06-28 01:15:22,943 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 178 flow. Second operand 8 states and 169 transitions. [2024-06-28 01:15:22,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 434 flow [2024-06-28 01:15:22,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 420 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:22,945 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 218 flow [2024-06-28 01:15:22,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-28 01:15:22,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-28 01:15:22,946 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 218 flow [2024-06-28 01:15:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:22,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:22,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:15:22,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1931657930, now seen corresponding path program 1 times [2024-06-28 01:15:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176477543] [2024-06-28 01:15:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176477543] [2024-06-28 01:15:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176477543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198609906] [2024-06-28 01:15:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:23,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:23,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:23,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:23,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:23,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:23,773 INFO L124 PetriNetUnfolderBase]: 553/1064 cut-off events. [2024-06-28 01:15:23,773 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-28 01:15:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 1064 events. 553/1064 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5670 event pairs, 159 based on Foata normal form. 3/1031 useless extension candidates. Maximal degree in co-relation 2829. Up to 866 conditions per place. [2024-06-28 01:15:23,779 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 51 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:15:23,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 392 flow [2024-06-28 01:15:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 01:15:23,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:15:23,780 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 218 flow. Second operand 6 states and 105 transitions. [2024-06-28 01:15:23,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 392 flow [2024-06-28 01:15:23,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 366 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:23,783 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 229 flow [2024-06-28 01:15:23,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-28 01:15:23,784 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-28 01:15:23,784 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 229 flow [2024-06-28 01:15:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:23,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:23,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:15:23,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:23,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash -277824696, now seen corresponding path program 1 times [2024-06-28 01:15:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313795451] [2024-06-28 01:15:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:24,258 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 01:15:24,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313795451] [2024-06-28 01:15:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313795451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:24,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:24,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:24,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843993390] [2024-06-28 01:15:24,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:24,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:24,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:24,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:24,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:24,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:24,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:24,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:24,505 INFO L124 PetriNetUnfolderBase]: 567/1066 cut-off events. [2024-06-28 01:15:24,505 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-06-28 01:15:24,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 1066 events. 567/1066 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5573 event pairs, 128 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 2946. Up to 891 conditions per place. [2024-06-28 01:15:24,510 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 56 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 01:15:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 460 flow [2024-06-28 01:15:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 01:15:24,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:15:24,511 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 229 flow. Second operand 6 states and 108 transitions. [2024-06-28 01:15:24,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 460 flow [2024-06-28 01:15:24,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 436 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:24,514 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 285 flow [2024-06-28 01:15:24,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-28 01:15:24,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-28 01:15:24,515 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 285 flow [2024-06-28 01:15:24,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:24,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:24,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:15:24,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:24,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 281205508, now seen corresponding path program 2 times [2024-06-28 01:15:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769141101] [2024-06-28 01:15:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:24,939 INFO 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 01:15:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769141101] [2024-06-28 01:15:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769141101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:15:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714140484] [2024-06-28 01:15:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:24,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:15:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:15:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:15:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:24,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:25,245 INFO L124 PetriNetUnfolderBase]: 565/1090 cut-off events. [2024-06-28 01:15:25,245 INFO L125 PetriNetUnfolderBase]: For 1739/1739 co-relation queries the response was YES. [2024-06-28 01:15:25,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1090 events. 565/1090 cut-off events. For 1739/1739 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5830 event pairs, 169 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 3128. Up to 915 conditions per place. [2024-06-28 01:15:25,251 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 53 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 01:15:25,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 445 flow [2024-06-28 01:15:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:15:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:15:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 01:15:25,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-28 01:15:25,252 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 285 flow. Second operand 6 states and 101 transitions. [2024-06-28 01:15:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 445 flow [2024-06-28 01:15:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 437 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:15:25,255 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 302 flow [2024-06-28 01:15:25,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-28 01:15:25,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 01:15:25,256 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 302 flow [2024-06-28 01:15:25,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:25,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:25,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:25,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:15:25,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:25,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:25,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1987785867, now seen corresponding path program 1 times [2024-06-28 01:15:25,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:25,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918658147] [2024-06-28 01:15:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:25,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:26,011 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 01:15:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:26,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918658147] [2024-06-28 01:15:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918658147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799039502] [2024-06-28 01:15:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:26,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:26,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:26,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:26,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:26,348 INFO L124 PetriNetUnfolderBase]: 579/1089 cut-off events. [2024-06-28 01:15:26,348 INFO L125 PetriNetUnfolderBase]: For 2118/2118 co-relation queries the response was YES. [2024-06-28 01:15:26,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1089 events. 579/1089 cut-off events. For 2118/2118 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5754 event pairs, 127 based on Foata normal form. 1/1052 useless extension candidates. Maximal degree in co-relation 3239. Up to 865 conditions per place. [2024-06-28 01:15:26,354 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 63 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-28 01:15:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 574 flow [2024-06-28 01:15:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:15:26,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:15:26,356 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 302 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:15:26,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 574 flow [2024-06-28 01:15:26,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 88 transitions, 545 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:26,360 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 338 flow [2024-06-28 01:15:26,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-28 01:15:26,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-28 01:15:26,363 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 338 flow [2024-06-28 01:15:26,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:26,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:26,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:26,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:15:26,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:26,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1987636137, now seen corresponding path program 2 times [2024-06-28 01:15:26,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:26,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133000316] [2024-06-28 01:15:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133000316] [2024-06-28 01:15:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133000316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:27,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097988803] [2024-06-28 01:15:27,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:27,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:27,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:27,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:27,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:27,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:27,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:27,439 INFO L124 PetriNetUnfolderBase]: 590/1105 cut-off events. [2024-06-28 01:15:27,439 INFO L125 PetriNetUnfolderBase]: For 2539/2539 co-relation queries the response was YES. [2024-06-28 01:15:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 1105 events. 590/1105 cut-off events. For 2539/2539 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5829 event pairs, 128 based on Foata normal form. 1/1068 useless extension candidates. Maximal degree in co-relation 3472. Up to 917 conditions per place. [2024-06-28 01:15:27,445 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-28 01:15:27,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 574 flow [2024-06-28 01:15:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:15:27,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-28 01:15:27,446 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 338 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:15:27,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 86 transitions, 574 flow [2024-06-28 01:15:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 547 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:15:27,451 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 364 flow [2024-06-28 01:15:27,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-06-28 01:15:27,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 01:15:27,452 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 364 flow [2024-06-28 01:15:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:27,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:27,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:27,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:15:27,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:27,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1987635920, now seen corresponding path program 1 times [2024-06-28 01:15:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:27,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570145202] [2024-06-28 01:15:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:27,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570145202] [2024-06-28 01:15:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570145202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:28,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:28,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193410881] [2024-06-28 01:15:28,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:28,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:28,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:28,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:28,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:28,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:28,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:28,353 INFO L124 PetriNetUnfolderBase]: 652/1217 cut-off events. [2024-06-28 01:15:28,353 INFO L125 PetriNetUnfolderBase]: For 3144/3144 co-relation queries the response was YES. [2024-06-28 01:15:28,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 1217 events. 652/1217 cut-off events. For 3144/3144 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6525 event pairs, 141 based on Foata normal form. 3/1177 useless extension candidates. Maximal degree in co-relation 3841. Up to 942 conditions per place. [2024-06-28 01:15:28,360 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 73 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2024-06-28 01:15:28,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 672 flow [2024-06-28 01:15:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:15:28,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-28 01:15:28,362 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 364 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:15:28,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 672 flow [2024-06-28 01:15:28,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 641 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:28,367 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 424 flow [2024-06-28 01:15:28,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-06-28 01:15:28,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 01:15:28,367 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 424 flow [2024-06-28 01:15:28,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:28,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:28,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:15:28,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 127732938, now seen corresponding path program 2 times [2024-06-28 01:15:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193032377] [2024-06-28 01:15:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:28,866 INFO 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 01:15:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193032377] [2024-06-28 01:15:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193032377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:28,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852210759] [2024-06-28 01:15:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:28,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:28,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:28,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:28,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:28,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:28,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:29,246 INFO L124 PetriNetUnfolderBase]: 685/1316 cut-off events. [2024-06-28 01:15:29,246 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2024-06-28 01:15:29,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 1316 events. 685/1316 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7327 event pairs, 192 based on Foata normal form. 3/1272 useless extension candidates. Maximal degree in co-relation 4386. Up to 1072 conditions per place. [2024-06-28 01:15:29,255 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-28 01:15:29,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 652 flow [2024-06-28 01:15:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 01:15:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-28 01:15:29,256 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 424 flow. Second operand 7 states and 118 transitions. [2024-06-28 01:15:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 652 flow [2024-06-28 01:15:29,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:29,261 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 462 flow [2024-06-28 01:15:29,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-28 01:15:29,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 01:15:29,262 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 462 flow [2024-06-28 01:15:29,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:29,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:15:29,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:29,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -897671329, now seen corresponding path program 3 times [2024-06-28 01:15:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357461614] [2024-06-28 01:15:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357461614] [2024-06-28 01:15:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357461614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:29,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225876765] [2024-06-28 01:15:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:29,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:29,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:29,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:29,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:29,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:29,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:30,267 INFO L124 PetriNetUnfolderBase]: 683/1309 cut-off events. [2024-06-28 01:15:30,267 INFO L125 PetriNetUnfolderBase]: For 4468/4468 co-relation queries the response was YES. [2024-06-28 01:15:30,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 1309 events. 683/1309 cut-off events. For 4468/4468 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7269 event pairs, 188 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 4455. Up to 1087 conditions per place. [2024-06-28 01:15:30,278 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-28 01:15:30,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 680 flow [2024-06-28 01:15:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 01:15:30,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-28 01:15:30,280 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 462 flow. Second operand 7 states and 117 transitions. [2024-06-28 01:15:30,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 680 flow [2024-06-28 01:15:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 641 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:30,286 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 452 flow [2024-06-28 01:15:30,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-28 01:15:30,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 01:15:30,287 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 452 flow [2024-06-28 01:15:30,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:30,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:30,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:30,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:15:30,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:30,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1752383120, now seen corresponding path program 3 times [2024-06-28 01:15:30,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:30,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865199694] [2024-06-28 01:15:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:30,779 INFO 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 01:15:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:30,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865199694] [2024-06-28 01:15:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865199694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:30,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:15:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29272457] [2024-06-28 01:15:30,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:15:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:15:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:15:30,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:30,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:30,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:30,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:30,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:31,173 INFO L124 PetriNetUnfolderBase]: 677/1301 cut-off events. [2024-06-28 01:15:31,173 INFO L125 PetriNetUnfolderBase]: For 4711/4711 co-relation queries the response was YES. [2024-06-28 01:15:31,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 1301 events. 677/1301 cut-off events. For 4711/4711 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7263 event pairs, 184 based on Foata normal form. 3/1257 useless extension candidates. Maximal degree in co-relation 4382. Up to 1018 conditions per place. [2024-06-28 01:15:31,185 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 71 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-28 01:15:31,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 690 flow [2024-06-28 01:15:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:15:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:15:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:15:31,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-28 01:15:31,186 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 452 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:15:31,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 690 flow [2024-06-28 01:15:31,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 649 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:31,235 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 448 flow [2024-06-28 01:15:31,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-28 01:15:31,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 01:15:31,236 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 448 flow [2024-06-28 01:15:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:15:31,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:31,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:31,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:15:31,236 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:31,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:31,237 INFO L85 PathProgramCache]: Analyzing trace with hash -706295673, now seen corresponding path program 1 times [2024-06-28 01:15:31,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:31,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884485362] [2024-06-28 01:15:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884485362] [2024-06-28 01:15:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884485362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:32,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506833270] [2024-06-28 01:15:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:32,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:32,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:32,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:32,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:32,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:32,519 INFO L124 PetriNetUnfolderBase]: 699/1306 cut-off events. [2024-06-28 01:15:32,519 INFO L125 PetriNetUnfolderBase]: For 5209/5209 co-relation queries the response was YES. [2024-06-28 01:15:32,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 1306 events. 699/1306 cut-off events. For 5209/5209 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7127 event pairs, 139 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 4521. Up to 1045 conditions per place. [2024-06-28 01:15:32,525 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 88 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-28 01:15:32,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 770 flow [2024-06-28 01:15:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:15:32,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-28 01:15:32,527 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 448 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:15:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 770 flow [2024-06-28 01:15:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 723 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:32,532 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 451 flow [2024-06-28 01:15:32,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=451, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-28 01:15:32,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-28 01:15:32,533 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 451 flow [2024-06-28 01:15:32,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:32,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:32,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:32,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:15:32,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:32,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -706175703, now seen corresponding path program 2 times [2024-06-28 01:15:32,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880848243] [2024-06-28 01:15:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:32,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:33,205 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 01:15:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880848243] [2024-06-28 01:15:33,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880848243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:33,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:33,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:33,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66682585] [2024-06-28 01:15:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:33,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:33,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:33,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:33,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:33,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:33,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:33,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:33,570 INFO L124 PetriNetUnfolderBase]: 727/1312 cut-off events. [2024-06-28 01:15:33,570 INFO L125 PetriNetUnfolderBase]: For 5686/5686 co-relation queries the response was YES. [2024-06-28 01:15:33,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 1312 events. 727/1312 cut-off events. For 5686/5686 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7070 event pairs, 135 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 4720. Up to 976 conditions per place. [2024-06-28 01:15:33,578 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-06-28 01:15:33,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 833 flow [2024-06-28 01:15:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:15:33,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-28 01:15:33,579 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 451 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:15:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 833 flow [2024-06-28 01:15:33,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 801 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:33,586 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 512 flow [2024-06-28 01:15:33,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-28 01:15:33,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-28 01:15:33,586 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 512 flow [2024-06-28 01:15:33,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:33,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:33,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:33,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:15:33,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:33,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818691, now seen corresponding path program 1 times [2024-06-28 01:15:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:33,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187745649] [2024-06-28 01:15:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:34,288 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 01:15:34,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187745649] [2024-06-28 01:15:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187745649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:34,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:34,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195079132] [2024-06-28 01:15:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:34,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:34,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:34,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:34,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:34,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:34,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:34,643 INFO L124 PetriNetUnfolderBase]: 767/1413 cut-off events. [2024-06-28 01:15:34,643 INFO L125 PetriNetUnfolderBase]: For 6807/6807 co-relation queries the response was YES. [2024-06-28 01:15:34,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5167 conditions, 1413 events. 767/1413 cut-off events. For 6807/6807 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7933 event pairs, 153 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 5129. Up to 947 conditions per place. [2024-06-28 01:15:34,650 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-06-28 01:15:34,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 892 flow [2024-06-28 01:15:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:15:34,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 01:15:34,652 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 512 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:15:34,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 892 flow [2024-06-28 01:15:34,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 856 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:34,659 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 582 flow [2024-06-28 01:15:34,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-06-28 01:15:34,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 01:15:34,660 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 582 flow [2024-06-28 01:15:34,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:34,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:34,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:15:34,661 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:34,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1487177061, now seen corresponding path program 2 times [2024-06-28 01:15:34,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:34,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885045943] [2024-06-28 01:15:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:34,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:35,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885045943] [2024-06-28 01:15:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885045943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:35,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:35,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103493817] [2024-06-28 01:15:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:35,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:35,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 582 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:35,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:35,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:35,747 INFO L124 PetriNetUnfolderBase]: 817/1469 cut-off events. [2024-06-28 01:15:35,748 INFO L125 PetriNetUnfolderBase]: For 8209/8209 co-relation queries the response was YES. [2024-06-28 01:15:35,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5903 conditions, 1469 events. 817/1469 cut-off events. For 8209/8209 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8124 event pairs, 151 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 5862. Up to 1111 conditions per place. [2024-06-28 01:15:35,756 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 89 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-06-28 01:15:35,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 122 transitions, 993 flow [2024-06-28 01:15:35,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:15:35,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-28 01:15:35,758 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 582 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:15:35,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 122 transitions, 993 flow [2024-06-28 01:15:35,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 962 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:35,768 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 658 flow [2024-06-28 01:15:35,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-28 01:15:35,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-06-28 01:15:35,769 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 658 flow [2024-06-28 01:15:35,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:35,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:35,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:15:35,769 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:35,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1487170551, now seen corresponding path program 3 times [2024-06-28 01:15:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181255099] [2024-06-28 01:15:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:36,437 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 01:15:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:36,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181255099] [2024-06-28 01:15:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181255099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:36,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20696287] [2024-06-28 01:15:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:36,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:36,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:36,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:36,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:36,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:36,819 INFO L124 PetriNetUnfolderBase]: 811/1466 cut-off events. [2024-06-28 01:15:36,819 INFO L125 PetriNetUnfolderBase]: For 8878/8878 co-relation queries the response was YES. [2024-06-28 01:15:36,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 1466 events. 811/1466 cut-off events. For 8878/8878 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8148 event pairs, 153 based on Foata normal form. 3/1426 useless extension candidates. Maximal degree in co-relation 6044. Up to 1128 conditions per place. [2024-06-28 01:15:36,827 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-06-28 01:15:36,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 121 transitions, 994 flow [2024-06-28 01:15:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:15:36,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:15:36,843 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 658 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:15:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 121 transitions, 994 flow [2024-06-28 01:15:36,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 966 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:15:36,855 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 682 flow [2024-06-28 01:15:36,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-28 01:15:36,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-28 01:15:36,856 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 682 flow [2024-06-28 01:15:36,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:36,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:36,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:36,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:15:36,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:36,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash -701534073, now seen corresponding path program 3 times [2024-06-28 01:15:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622328467] [2024-06-28 01:15:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:37,595 INFO 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 01:15:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622328467] [2024-06-28 01:15:37,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622328467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:37,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:37,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026998298] [2024-06-28 01:15:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:37,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:37,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:37,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 682 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:37,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:37,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:37,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:37,961 INFO L124 PetriNetUnfolderBase]: 822/1512 cut-off events. [2024-06-28 01:15:37,962 INFO L125 PetriNetUnfolderBase]: For 9381/9381 co-relation queries the response was YES. [2024-06-28 01:15:37,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6377 conditions, 1512 events. 822/1512 cut-off events. For 9381/9381 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8647 event pairs, 166 based on Foata normal form. 1/1461 useless extension candidates. Maximal degree in co-relation 6331. Up to 1266 conditions per place. [2024-06-28 01:15:37,969 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 94 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-28 01:15:37,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 118 transitions, 1004 flow [2024-06-28 01:15:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:15:37,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-28 01:15:37,971 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 682 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:15:37,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 118 transitions, 1004 flow [2024-06-28 01:15:37,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 953 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:37,981 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 688 flow [2024-06-28 01:15:37,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-28 01:15:37,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 01:15:37,982 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 688 flow [2024-06-28 01:15:37,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:37,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:37,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:37,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:15:37,983 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -335245393, now seen corresponding path program 4 times [2024-06-28 01:15:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418841014] [2024-06-28 01:15:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:37,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:38,561 INFO 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 01:15:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418841014] [2024-06-28 01:15:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418841014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:38,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:38,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:38,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128276205] [2024-06-28 01:15:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:38,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:38,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:38,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:38,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:38,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:38,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:39,001 INFO L124 PetriNetUnfolderBase]: 855/1613 cut-off events. [2024-06-28 01:15:39,002 INFO L125 PetriNetUnfolderBase]: For 10666/10666 co-relation queries the response was YES. [2024-06-28 01:15:39,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1613 events. 855/1613 cut-off events. For 10666/10666 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9498 event pairs, 227 based on Foata normal form. 3/1560 useless extension candidates. Maximal degree in co-relation 6632. Up to 1297 conditions per place. [2024-06-28 01:15:39,011 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 94 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-28 01:15:39,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 117 transitions, 1005 flow [2024-06-28 01:15:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:15:39,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:15:39,013 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 688 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:15:39,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 117 transitions, 1005 flow [2024-06-28 01:15:39,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 117 transitions, 966 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:39,026 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 720 flow [2024-06-28 01:15:39,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-28 01:15:39,026 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 01:15:39,026 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 720 flow [2024-06-28 01:15:39,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:39,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:39,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:39,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:15:39,028 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2048506183, now seen corresponding path program 1 times [2024-06-28 01:15:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927966105] [2024-06-28 01:15:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:39,681 INFO 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 01:15:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927966105] [2024-06-28 01:15:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927966105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:39,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158897063] [2024-06-28 01:15:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:39,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:39,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:39,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:39,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:39,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:40,202 INFO L124 PetriNetUnfolderBase]: 857/1636 cut-off events. [2024-06-28 01:15:40,202 INFO L125 PetriNetUnfolderBase]: For 11120/11120 co-relation queries the response was YES. [2024-06-28 01:15:40,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1636 events. 857/1636 cut-off events. For 11120/11120 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9765 event pairs, 220 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 6714. Up to 1311 conditions per place. [2024-06-28 01:15:40,211 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 98 selfloop transitions, 18 changer transitions 0/123 dead transitions. [2024-06-28 01:15:40,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 1050 flow [2024-06-28 01:15:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:15:40,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:15:40,221 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 720 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:15:40,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 1050 flow [2024-06-28 01:15:40,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 1012 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:40,235 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 765 flow [2024-06-28 01:15:40,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-06-28 01:15:40,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-28 01:15:40,236 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 765 flow [2024-06-28 01:15:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:40,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:40,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:15:40,236 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:40,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 325674521, now seen corresponding path program 5 times [2024-06-28 01:15:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788178141] [2024-06-28 01:15:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:40,868 INFO 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 01:15:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788178141] [2024-06-28 01:15:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788178141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:40,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034846728] [2024-06-28 01:15:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:40,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:40,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:40,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:40,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:40,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:40,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:41,333 INFO L124 PetriNetUnfolderBase]: 864/1620 cut-off events. [2024-06-28 01:15:41,333 INFO L125 PetriNetUnfolderBase]: For 11813/11813 co-relation queries the response was YES. [2024-06-28 01:15:41,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 1620 events. 864/1620 cut-off events. For 11813/11813 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9540 event pairs, 213 based on Foata normal form. 3/1569 useless extension candidates. Maximal degree in co-relation 6844. Up to 1270 conditions per place. [2024-06-28 01:15:41,342 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 101 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-28 01:15:41,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 127 transitions, 1121 flow [2024-06-28 01:15:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:15:41,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-28 01:15:41,344 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 765 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:15:41,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 127 transitions, 1121 flow [2024-06-28 01:15:41,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 1076 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:41,365 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 790 flow [2024-06-28 01:15:41,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-06-28 01:15:41,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 01:15:41,366 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 790 flow [2024-06-28 01:15:41,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:41,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:41,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:41,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:15:41,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:41,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006567, now seen corresponding path program 4 times [2024-06-28 01:15:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:41,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826616930] [2024-06-28 01:15:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:41,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:42,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826616930] [2024-06-28 01:15:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826616930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:42,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711106440] [2024-06-28 01:15:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:42,463 INFO L124 PetriNetUnfolderBase]: 862/1627 cut-off events. [2024-06-28 01:15:42,463 INFO L125 PetriNetUnfolderBase]: For 11963/11963 co-relation queries the response was YES. [2024-06-28 01:15:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6947 conditions, 1627 events. 862/1627 cut-off events. For 11963/11963 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9625 event pairs, 233 based on Foata normal form. 1/1572 useless extension candidates. Maximal degree in co-relation 6896. Up to 1355 conditions per place. [2024-06-28 01:15:42,471 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-28 01:15:42,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 124 transitions, 1110 flow [2024-06-28 01:15:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:15:42,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-28 01:15:42,472 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 790 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:15:42,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 124 transitions, 1110 flow [2024-06-28 01:15:42,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 1053 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:42,491 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 788 flow [2024-06-28 01:15:42,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-06-28 01:15:42,491 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 01:15:42,491 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 788 flow [2024-06-28 01:15:42,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:42,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:42,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:42,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:15:42,492 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006381, now seen corresponding path program 6 times [2024-06-28 01:15:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105553632] [2024-06-28 01:15:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:43,176 INFO 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 01:15:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105553632] [2024-06-28 01:15:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105553632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:43,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:43,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:15:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856908009] [2024-06-28 01:15:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:15:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:15:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:15:43,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:43,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 788 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:43,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:43,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:43,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:43,605 INFO L124 PetriNetUnfolderBase]: 860/1618 cut-off events. [2024-06-28 01:15:43,605 INFO L125 PetriNetUnfolderBase]: For 12233/12233 co-relation queries the response was YES. [2024-06-28 01:15:43,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 1618 events. 860/1618 cut-off events. For 12233/12233 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9572 event pairs, 211 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 6783. Up to 1203 conditions per place. [2024-06-28 01:15:43,614 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 95 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-28 01:15:43,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 1110 flow [2024-06-28 01:15:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:15:43,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:15:43,617 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 788 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:15:43,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 1110 flow [2024-06-28 01:15:43,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 127 transitions, 1073 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:43,635 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 806 flow [2024-06-28 01:15:43,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=806, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2024-06-28 01:15:43,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 01:15:43,635 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 806 flow [2024-06-28 01:15:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:15:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:43,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:15:43,636 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:43,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2048494310, now seen corresponding path program 1 times [2024-06-28 01:15:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774028603] [2024-06-28 01:15:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:44,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774028603] [2024-06-28 01:15:44,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774028603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:44,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:44,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:44,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15036029] [2024-06-28 01:15:44,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:44,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:44,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:44,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 806 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:44,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:44,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:44,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:45,242 INFO L124 PetriNetUnfolderBase]: 857/1644 cut-off events. [2024-06-28 01:15:45,242 INFO L125 PetriNetUnfolderBase]: For 13037/13037 co-relation queries the response was YES. [2024-06-28 01:15:45,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6920 conditions, 1644 events. 857/1644 cut-off events. For 13037/13037 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9880 event pairs, 218 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 6868. Up to 1317 conditions per place. [2024-06-28 01:15:45,251 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 103 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-06-28 01:15:45,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 127 transitions, 1114 flow [2024-06-28 01:15:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:15:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:15:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:15:45,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-28 01:15:45,252 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 806 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:15:45,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 127 transitions, 1114 flow [2024-06-28 01:15:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 127 transitions, 1012 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:15:45,269 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 742 flow [2024-06-28 01:15:45,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2024-06-28 01:15:45,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 01:15:45,270 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 742 flow [2024-06-28 01:15:45,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:45,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:45,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:15:45,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:45,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash -420328341, now seen corresponding path program 1 times [2024-06-28 01:15:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:45,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773118723] [2024-06-28 01:15:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:15:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773118723] [2024-06-28 01:15:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773118723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:45,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434777085] [2024-06-28 01:15:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:46,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:46,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 742 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:46,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:46,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:46,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:46,449 INFO L124 PetriNetUnfolderBase]: 868/1595 cut-off events. [2024-06-28 01:15:46,449 INFO L125 PetriNetUnfolderBase]: For 12888/12888 co-relation queries the response was YES. [2024-06-28 01:15:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1595 events. 868/1595 cut-off events. For 12888/12888 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9203 event pairs, 182 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 6592. Up to 1331 conditions per place. [2024-06-28 01:15:46,456 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 122 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-06-28 01:15:46,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 144 transitions, 1165 flow [2024-06-28 01:15:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:15:46,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:15:46,457 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 742 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:15:46,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 144 transitions, 1165 flow [2024-06-28 01:15:46,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 1127 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:46,473 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 779 flow [2024-06-28 01:15:46,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2024-06-28 01:15:46,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-28 01:15:46,477 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 779 flow [2024-06-28 01:15:46,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:46,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:46,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:15:46,478 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:46,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 998261908, now seen corresponding path program 1 times [2024-06-28 01:15:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631821087] [2024-06-28 01:15:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:47,352 INFO 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 01:15:47,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631821087] [2024-06-28 01:15:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631821087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:47,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:47,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:47,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224761214] [2024-06-28 01:15:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:47,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:47,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:47,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:47,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:47,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:47,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:47,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:47,903 INFO L124 PetriNetUnfolderBase]: 916/1637 cut-off events. [2024-06-28 01:15:47,904 INFO L125 PetriNetUnfolderBase]: For 15015/15015 co-relation queries the response was YES. [2024-06-28 01:15:47,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1637 events. 916/1637 cut-off events. For 15015/15015 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9255 event pairs, 158 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 7014. Up to 1059 conditions per place. [2024-06-28 01:15:47,912 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 38 changer transitions 0/150 dead transitions. [2024-06-28 01:15:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 150 transitions, 1281 flow [2024-06-28 01:15:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:15:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-28 01:15:47,913 INFO L175 Difference]: Start difference. First operand has 116 places, 104 transitions, 779 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:15:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 150 transitions, 1281 flow [2024-06-28 01:15:47,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 150 transitions, 1243 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:15:47,945 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 858 flow [2024-06-28 01:15:47,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2024-06-28 01:15:47,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-28 01:15:47,947 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 858 flow [2024-06-28 01:15:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:47,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:47,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:47,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:15:47,948 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:47,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -534142947, now seen corresponding path program 2 times [2024-06-28 01:15:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797424213] [2024-06-28 01:15:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:48,731 INFO 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 01:15:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797424213] [2024-06-28 01:15:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797424213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561592782] [2024-06-28 01:15:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:48,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:48,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:48,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:48,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:48,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:48,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:49,214 INFO L124 PetriNetUnfolderBase]: 969/1770 cut-off events. [2024-06-28 01:15:49,214 INFO L125 PetriNetUnfolderBase]: For 17375/17375 co-relation queries the response was YES. [2024-06-28 01:15:49,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1770 events. 969/1770 cut-off events. For 17375/17375 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10409 event pairs, 164 based on Foata normal form. 1/1711 useless extension candidates. Maximal degree in co-relation 7792. Up to 1014 conditions per place. [2024-06-28 01:15:49,224 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/159 dead transitions. [2024-06-28 01:15:49,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 159 transitions, 1489 flow [2024-06-28 01:15:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:15:49,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:15:49,225 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 858 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:15:49,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 159 transitions, 1489 flow [2024-06-28 01:15:49,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 1445 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:49,252 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 1049 flow [2024-06-28 01:15:49,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1049, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-06-28 01:15:49,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-28 01:15:49,252 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 1049 flow [2024-06-28 01:15:49,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:49,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:49,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:15:49,253 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:49,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash -534148527, now seen corresponding path program 3 times [2024-06-28 01:15:49,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:49,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572539500] [2024-06-28 01:15:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:50,049 INFO 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 01:15:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572539500] [2024-06-28 01:15:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572539500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318067355] [2024-06-28 01:15:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:50,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:50,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:50,601 INFO L124 PetriNetUnfolderBase]: 967/1767 cut-off events. [2024-06-28 01:15:50,601 INFO L125 PetriNetUnfolderBase]: For 18814/18814 co-relation queries the response was YES. [2024-06-28 01:15:50,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8315 conditions, 1767 events. 967/1767 cut-off events. For 18814/18814 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10428 event pairs, 164 based on Foata normal form. 1/1708 useless extension candidates. Maximal degree in co-relation 8256. Up to 1012 conditions per place. [2024-06-28 01:15:50,610 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 46 changer transitions 0/158 dead transitions. [2024-06-28 01:15:50,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 158 transitions, 1525 flow [2024-06-28 01:15:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:15:50,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 01:15:50,612 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 1049 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:15:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 158 transitions, 1525 flow [2024-06-28 01:15:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 158 transitions, 1475 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 01:15:50,644 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1096 flow [2024-06-28 01:15:50,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-06-28 01:15:50,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 01:15:50,645 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1096 flow [2024-06-28 01:15:50,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:50,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:50,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:50,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:15:50,646 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:50,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354031, now seen corresponding path program 4 times [2024-06-28 01:15:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8484882] [2024-06-28 01:15:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:51,367 INFO 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 01:15:51,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:51,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8484882] [2024-06-28 01:15:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8484882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:51,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414521685] [2024-06-28 01:15:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:51,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:51,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:51,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:51,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:51,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:51,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:51,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:51,849 INFO L124 PetriNetUnfolderBase]: 1033/1851 cut-off events. [2024-06-28 01:15:51,849 INFO L125 PetriNetUnfolderBase]: For 22747/22747 co-relation queries the response was YES. [2024-06-28 01:15:51,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8989 conditions, 1851 events. 1033/1851 cut-off events. For 22747/22747 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10810 event pairs, 178 based on Foata normal form. 6/1801 useless extension candidates. Maximal degree in co-relation 8928. Up to 1394 conditions per place. [2024-06-28 01:15:51,861 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 128 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-28 01:15:51,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 163 transitions, 1603 flow [2024-06-28 01:15:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:15:51,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-28 01:15:51,863 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1096 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:15:51,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 163 transitions, 1603 flow [2024-06-28 01:15:51,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 163 transitions, 1497 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:51,922 INFO L231 Difference]: Finished difference. Result has 134 places, 123 transitions, 1132 flow [2024-06-28 01:15:51,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=134, PETRI_TRANSITIONS=123} [2024-06-28 01:15:51,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-28 01:15:51,922 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 123 transitions, 1132 flow [2024-06-28 01:15:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:51,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:51,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:15:51,923 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:51,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1292431317, now seen corresponding path program 5 times [2024-06-28 01:15:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555352081] [2024-06-28 01:15:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:52,618 INFO 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 01:15:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555352081] [2024-06-28 01:15:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555352081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:52,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:52,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877393915] [2024-06-28 01:15:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:52,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:52,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:52,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 123 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:52,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:52,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:52,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:53,119 INFO L124 PetriNetUnfolderBase]: 1057/1888 cut-off events. [2024-06-28 01:15:53,119 INFO L125 PetriNetUnfolderBase]: For 22255/22255 co-relation queries the response was YES. [2024-06-28 01:15:53,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9291 conditions, 1888 events. 1057/1888 cut-off events. For 22255/22255 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11011 event pairs, 175 based on Foata normal form. 1/1833 useless extension candidates. Maximal degree in co-relation 9229. Up to 1414 conditions per place. [2024-06-28 01:15:53,130 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 127 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-06-28 01:15:53,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 167 transitions, 1684 flow [2024-06-28 01:15:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:15:53,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-28 01:15:53,131 INFO L175 Difference]: Start difference. First operand has 134 places, 123 transitions, 1132 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:15:53,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 167 transitions, 1684 flow [2024-06-28 01:15:53,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 167 transitions, 1596 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:53,167 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 1171 flow [2024-06-28 01:15:53,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1171, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2024-06-28 01:15:53,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 01:15:53,168 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 1171 flow [2024-06-28 01:15:53,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:53,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:53,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:15:53,168 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:53,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354248, now seen corresponding path program 2 times [2024-06-28 01:15:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046679336] [2024-06-28 01:15:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:54,029 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 01:15:54,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046679336] [2024-06-28 01:15:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046679336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263385291] [2024-06-28 01:15:54,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:54,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:54,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:54,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:54,592 INFO L124 PetriNetUnfolderBase]: 1079/1937 cut-off events. [2024-06-28 01:15:54,593 INFO L125 PetriNetUnfolderBase]: For 23882/23882 co-relation queries the response was YES. [2024-06-28 01:15:54,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1937 events. 1079/1937 cut-off events. For 23882/23882 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11405 event pairs, 190 based on Foata normal form. 2/1878 useless extension candidates. Maximal degree in co-relation 9358. Up to 1521 conditions per place. [2024-06-28 01:15:54,603 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2024-06-28 01:15:54,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 168 transitions, 1627 flow [2024-06-28 01:15:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:15:54,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-28 01:15:54,604 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 1171 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:15:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 168 transitions, 1627 flow [2024-06-28 01:15:54,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 168 transitions, 1577 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:15:54,643 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1198 flow [2024-06-28 01:15:54,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1198, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2024-06-28 01:15:54,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 01:15:54,643 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1198 flow [2024-06-28 01:15:54,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:54,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:54,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:15:54,643 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:54,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1142146486, now seen corresponding path program 1 times [2024-06-28 01:15:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789725122] [2024-06-28 01:15:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:55,727 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 01:15:55,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789725122] [2024-06-28 01:15:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789725122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:55,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:55,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613083118] [2024-06-28 01:15:55,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:55,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:55,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:55,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:55,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1198 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:55,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:55,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:55,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:56,357 INFO L124 PetriNetUnfolderBase]: 1090/1974 cut-off events. [2024-06-28 01:15:56,357 INFO L125 PetriNetUnfolderBase]: For 24384/24384 co-relation queries the response was YES. [2024-06-28 01:15:56,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9663 conditions, 1974 events. 1090/1974 cut-off events. For 24384/24384 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11776 event pairs, 221 based on Foata normal form. 1/1908 useless extension candidates. Maximal degree in co-relation 9598. Up to 1670 conditions per place. [2024-06-28 01:15:56,372 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-28 01:15:56,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 165 transitions, 1638 flow [2024-06-28 01:15:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:15:56,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:15:56,378 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1198 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:15:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 165 transitions, 1638 flow [2024-06-28 01:15:56,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 165 transitions, 1581 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:56,422 INFO L231 Difference]: Finished difference. Result has 142 places, 131 transitions, 1210 flow [2024-06-28 01:15:56,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2024-06-28 01:15:56,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 01:15:56,423 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 1210 flow [2024-06-28 01:15:56,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:56,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:56,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:15:56,423 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:56,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash -272712944, now seen corresponding path program 3 times [2024-06-28 01:15:56,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:56,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646098445] [2024-06-28 01:15:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:57,379 INFO 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 01:15:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646098445] [2024-06-28 01:15:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646098445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125737838] [2024-06-28 01:15:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:57,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:57,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:57,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:57,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:57,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:57,964 INFO L124 PetriNetUnfolderBase]: 1112/1985 cut-off events. [2024-06-28 01:15:57,964 INFO L125 PetriNetUnfolderBase]: For 26028/26028 co-relation queries the response was YES. [2024-06-28 01:15:57,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9734 conditions, 1985 events. 1112/1985 cut-off events. For 26028/26028 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11699 event pairs, 188 based on Foata normal form. 2/1927 useless extension candidates. Maximal degree in co-relation 9668. Up to 1528 conditions per place. [2024-06-28 01:15:57,977 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-28 01:15:57,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 172 transitions, 1678 flow [2024-06-28 01:15:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:15:57,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-28 01:15:57,979 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 1210 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:15:57,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 172 transitions, 1678 flow [2024-06-28 01:15:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 172 transitions, 1629 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:58,022 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1250 flow [2024-06-28 01:15:58,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-28 01:15:58,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 01:15:58,023 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1250 flow [2024-06-28 01:15:58,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:58,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:58,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:58,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:15:58,024 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:58,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash -272713161, now seen corresponding path program 6 times [2024-06-28 01:15:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362620200] [2024-06-28 01:15:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:15:58,770 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 01:15:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:15:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362620200] [2024-06-28 01:15:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362620200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:15:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:15:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:15:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205127949] [2024-06-28 01:15:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:15:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:15:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:15:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:15:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:15:58,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:15:58,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:58,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:15:58,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:15:58,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:15:59,310 INFO L124 PetriNetUnfolderBase]: 1110/1985 cut-off events. [2024-06-28 01:15:59,310 INFO L125 PetriNetUnfolderBase]: For 26305/26305 co-relation queries the response was YES. [2024-06-28 01:15:59,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9835 conditions, 1985 events. 1110/1985 cut-off events. For 26305/26305 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11681 event pairs, 179 based on Foata normal form. 1/1925 useless extension candidates. Maximal degree in co-relation 9768. Up to 1497 conditions per place. [2024-06-28 01:15:59,324 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 132 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2024-06-28 01:15:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 172 transitions, 1705 flow [2024-06-28 01:15:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:15:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:15:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:15:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-28 01:15:59,325 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1250 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:15:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 172 transitions, 1705 flow [2024-06-28 01:15:59,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 172 transitions, 1628 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:15:59,373 INFO L231 Difference]: Finished difference. Result has 146 places, 134 transitions, 1255 flow [2024-06-28 01:15:59,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1255, PETRI_PLACES=146, PETRI_TRANSITIONS=134} [2024-06-28 01:15:59,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-28 01:15:59,374 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 1255 flow [2024-06-28 01:15:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:15:59,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:15:59,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:15:59,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:15:59,374 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:15:59,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:15:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2079460908, now seen corresponding path program 4 times [2024-06-28 01:15:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:15:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265547771] [2024-06-28 01:15:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:15:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:15:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265547771] [2024-06-28 01:16:00,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265547771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:00,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:00,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448255683] [2024-06-28 01:16:00,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:00,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:00,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:00,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:00,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 134 transitions, 1255 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:00,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:00,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:00,707 INFO L124 PetriNetUnfolderBase]: 1136/2084 cut-off events. [2024-06-28 01:16:00,707 INFO L125 PetriNetUnfolderBase]: For 27838/27838 co-relation queries the response was YES. [2024-06-28 01:16:00,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9983 conditions, 2084 events. 1136/2084 cut-off events. For 27838/27838 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12674 event pairs, 294 based on Foata normal form. 2/2022 useless extension candidates. Maximal degree in co-relation 9915. Up to 1748 conditions per place. [2024-06-28 01:16:00,744 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 143 selfloop transitions, 18 changer transitions 0/168 dead transitions. [2024-06-28 01:16:00,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 168 transitions, 1693 flow [2024-06-28 01:16:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:16:00,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:16:00,745 INFO L175 Difference]: Start difference. First operand has 146 places, 134 transitions, 1255 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:16:00,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 168 transitions, 1693 flow [2024-06-28 01:16:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 168 transitions, 1636 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:00,786 INFO L231 Difference]: Finished difference. Result has 151 places, 141 transitions, 1308 flow [2024-06-28 01:16:00,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1308, PETRI_PLACES=151, PETRI_TRANSITIONS=141} [2024-06-28 01:16:00,787 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-28 01:16:00,787 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 141 transitions, 1308 flow [2024-06-28 01:16:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:00,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:00,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:16:00,787 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:00,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash -413173667, now seen corresponding path program 7 times [2024-06-28 01:16:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567101076] [2024-06-28 01:16:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:01,488 INFO 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 01:16:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567101076] [2024-06-28 01:16:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567101076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032638947] [2024-06-28 01:16:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:01,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:01,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:01,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 141 transitions, 1308 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:01,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:01,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:02,047 INFO L124 PetriNetUnfolderBase]: 1160/2097 cut-off events. [2024-06-28 01:16:02,047 INFO L125 PetriNetUnfolderBase]: For 29497/29497 co-relation queries the response was YES. [2024-06-28 01:16:02,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10528 conditions, 2097 events. 1160/2097 cut-off events. For 29497/29497 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12632 event pairs, 257 based on Foata normal form. 1/2040 useless extension candidates. Maximal degree in co-relation 10457. Up to 1572 conditions per place. [2024-06-28 01:16:02,062 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 141 selfloop transitions, 31 changer transitions 0/179 dead transitions. [2024-06-28 01:16:02,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 179 transitions, 1970 flow [2024-06-28 01:16:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:16:02,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:16:02,063 INFO L175 Difference]: Start difference. First operand has 151 places, 141 transitions, 1308 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:16:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 179 transitions, 1970 flow [2024-06-28 01:16:02,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 179 transitions, 1918 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:02,114 INFO L231 Difference]: Finished difference. Result has 155 places, 145 transitions, 1383 flow [2024-06-28 01:16:02,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1383, PETRI_PLACES=155, PETRI_TRANSITIONS=145} [2024-06-28 01:16:02,115 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-28 01:16:02,115 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 145 transitions, 1383 flow [2024-06-28 01:16:02,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:02,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:02,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:16:02,116 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:02,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 910720652, now seen corresponding path program 5 times [2024-06-28 01:16:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:02,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816127519] [2024-06-28 01:16:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:02,901 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 01:16:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816127519] [2024-06-28 01:16:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816127519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:02,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310856881] [2024-06-28 01:16:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:02,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:02,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:02,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 145 transitions, 1383 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:02,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:02,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:02,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:03,571 INFO L124 PetriNetUnfolderBase]: 1182/2164 cut-off events. [2024-06-28 01:16:03,571 INFO L125 PetriNetUnfolderBase]: For 32350/32350 co-relation queries the response was YES. [2024-06-28 01:16:03,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10852 conditions, 2164 events. 1182/2164 cut-off events. For 32350/32350 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13220 event pairs, 286 based on Foata normal form. 2/2099 useless extension candidates. Maximal degree in co-relation 10780. Up to 1782 conditions per place. [2024-06-28 01:16:03,587 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 153 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2024-06-28 01:16:03,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 178 transitions, 1849 flow [2024-06-28 01:16:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:16:03,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:16:03,588 INFO L175 Difference]: Start difference. First operand has 155 places, 145 transitions, 1383 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:16:03,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 178 transitions, 1849 flow [2024-06-28 01:16:03,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 178 transitions, 1714 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:03,640 INFO L231 Difference]: Finished difference. Result has 156 places, 147 transitions, 1319 flow [2024-06-28 01:16:03,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1319, PETRI_PLACES=156, PETRI_TRANSITIONS=147} [2024-06-28 01:16:03,641 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-28 01:16:03,641 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 147 transitions, 1319 flow [2024-06-28 01:16:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:03,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:03,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:03,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:16:03,641 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:03,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash -128765717, now seen corresponding path program 8 times [2024-06-28 01:16:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:03,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435406251] [2024-06-28 01:16:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:04,285 INFO 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 01:16:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435406251] [2024-06-28 01:16:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435406251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:04,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672066188] [2024-06-28 01:16:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:04,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:04,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:04,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 147 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:04,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:04,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:04,866 INFO L124 PetriNetUnfolderBase]: 1248/2262 cut-off events. [2024-06-28 01:16:04,866 INFO L125 PetriNetUnfolderBase]: For 36143/36143 co-relation queries the response was YES. [2024-06-28 01:16:04,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 2262 events. 1248/2262 cut-off events. For 36143/36143 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13831 event pairs, 298 based on Foata normal form. 6/2202 useless extension candidates. Maximal degree in co-relation 10976. Up to 1828 conditions per place. [2024-06-28 01:16:04,883 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 156 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-28 01:16:04,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 184 transitions, 1854 flow [2024-06-28 01:16:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:16:04,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:16:04,884 INFO L175 Difference]: Start difference. First operand has 156 places, 147 transitions, 1319 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:16:04,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 184 transitions, 1854 flow [2024-06-28 01:16:04,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 184 transitions, 1803 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:04,946 INFO L231 Difference]: Finished difference. Result has 158 places, 152 transitions, 1402 flow [2024-06-28 01:16:04,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=158, PETRI_TRANSITIONS=152} [2024-06-28 01:16:04,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 01:16:04,947 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 152 transitions, 1402 flow [2024-06-28 01:16:04,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:04,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:04,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:16:04,947 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:04,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 626514512, now seen corresponding path program 6 times [2024-06-28 01:16:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901251062] [2024-06-28 01:16:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:05,809 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 01:16:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901251062] [2024-06-28 01:16:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901251062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73800806] [2024-06-28 01:16:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:05,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:05,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:05,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 152 transitions, 1402 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:05,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:05,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:05,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:06,430 INFO L124 PetriNetUnfolderBase]: 1270/2279 cut-off events. [2024-06-28 01:16:06,430 INFO L125 PetriNetUnfolderBase]: For 35379/35379 co-relation queries the response was YES. [2024-06-28 01:16:06,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 2279 events. 1270/2279 cut-off events. For 35379/35379 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13836 event pairs, 296 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 11299. Up to 1876 conditions per place. [2024-06-28 01:16:06,446 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 161 selfloop transitions, 21 changer transitions 0/189 dead transitions. [2024-06-28 01:16:06,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 189 transitions, 1916 flow [2024-06-28 01:16:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:16:06,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:16:06,447 INFO L175 Difference]: Start difference. First operand has 158 places, 152 transitions, 1402 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:16:06,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 189 transitions, 1916 flow [2024-06-28 01:16:06,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 189 transitions, 1830 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:06,508 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 1397 flow [2024-06-28 01:16:06,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1397, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2024-06-28 01:16:06,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-28 01:16:06,509 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 1397 flow [2024-06-28 01:16:06,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:06,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:06,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:06,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:16:06,510 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:06,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash 626514295, now seen corresponding path program 9 times [2024-06-28 01:16:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:06,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540180313] [2024-06-28 01:16:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:06,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:07,227 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 01:16:07,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:07,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540180313] [2024-06-28 01:16:07,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540180313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:07,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:07,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395870676] [2024-06-28 01:16:07,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:07,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:07,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:07,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 1397 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:07,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:07,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:07,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:07,846 INFO L124 PetriNetUnfolderBase]: 1264/2275 cut-off events. [2024-06-28 01:16:07,846 INFO L125 PetriNetUnfolderBase]: For 34601/34601 co-relation queries the response was YES. [2024-06-28 01:16:07,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 2275 events. 1264/2275 cut-off events. For 34601/34601 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13840 event pairs, 297 based on Foata normal form. 3/2215 useless extension candidates. Maximal degree in co-relation 11034. Up to 1850 conditions per place. [2024-06-28 01:16:07,862 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 161 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-28 01:16:07,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 190 transitions, 1892 flow [2024-06-28 01:16:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:16:07,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:16:07,863 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 1397 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:16:07,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 190 transitions, 1892 flow [2024-06-28 01:16:07,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 190 transitions, 1815 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:07,935 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1381 flow [2024-06-28 01:16:07,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1381, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-06-28 01:16:07,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 01:16:07,936 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1381 flow [2024-06-28 01:16:07,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:07,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:07,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:16:07,936 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash -413179247, now seen corresponding path program 10 times [2024-06-28 01:16:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:07,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350844784] [2024-06-28 01:16:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:08,649 INFO 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 01:16:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350844784] [2024-06-28 01:16:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350844784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:08,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847977849] [2024-06-28 01:16:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:08,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:08,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1381 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:08,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:08,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:08,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:09,203 INFO L124 PetriNetUnfolderBase]: 1262/2307 cut-off events. [2024-06-28 01:16:09,203 INFO L125 PetriNetUnfolderBase]: For 32771/32771 co-relation queries the response was YES. [2024-06-28 01:16:09,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11012 conditions, 2307 events. 1262/2307 cut-off events. For 32771/32771 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14274 event pairs, 264 based on Foata normal form. 1/2235 useless extension candidates. Maximal degree in co-relation 10938. Up to 1714 conditions per place. [2024-06-28 01:16:09,219 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 145 selfloop transitions, 36 changer transitions 0/188 dead transitions. [2024-06-28 01:16:09,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 188 transitions, 1853 flow [2024-06-28 01:16:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:16:09,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:16:09,221 INFO L175 Difference]: Start difference. First operand has 162 places, 155 transitions, 1381 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:16:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 188 transitions, 1853 flow [2024-06-28 01:16:09,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 188 transitions, 1791 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:09,282 INFO L231 Difference]: Finished difference. Result has 164 places, 155 transitions, 1396 flow [2024-06-28 01:16:09,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1396, PETRI_PLACES=164, PETRI_TRANSITIONS=155} [2024-06-28 01:16:09,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 01:16:09,283 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 155 transitions, 1396 flow [2024-06-28 01:16:09,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:09,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:09,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:09,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:16:09,284 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:09,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 626306750, now seen corresponding path program 2 times [2024-06-28 01:16:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:09,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587515010] [2024-06-28 01:16:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:10,181 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 01:16:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:10,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587515010] [2024-06-28 01:16:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587515010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477874495] [2024-06-28 01:16:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:10,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:10,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:10,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:10,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 155 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:10,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:10,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:10,784 INFO L124 PetriNetUnfolderBase]: 1260/2272 cut-off events. [2024-06-28 01:16:10,785 INFO L125 PetriNetUnfolderBase]: For 33230/33230 co-relation queries the response was YES. [2024-06-28 01:16:10,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 2272 events. 1260/2272 cut-off events. For 33230/33230 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13833 event pairs, 327 based on Foata normal form. 1/2210 useless extension candidates. Maximal degree in co-relation 10935. Up to 1960 conditions per place. [2024-06-28 01:16:10,801 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 161 selfloop transitions, 16 changer transitions 0/184 dead transitions. [2024-06-28 01:16:10,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 184 transitions, 1842 flow [2024-06-28 01:16:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:16:10,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:16:10,802 INFO L175 Difference]: Start difference. First operand has 164 places, 155 transitions, 1396 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:16:10,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 184 transitions, 1842 flow [2024-06-28 01:16:10,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 184 transitions, 1773 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:10,866 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 1364 flow [2024-06-28 01:16:10,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1364, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2024-06-28 01:16:10,866 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 01:16:10,867 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 1364 flow [2024-06-28 01:16:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:10,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:10,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:16:10,867 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:10,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash 626312702, now seen corresponding path program 7 times [2024-06-28 01:16:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927155000] [2024-06-28 01:16:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:11,688 INFO 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 01:16:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927155000] [2024-06-28 01:16:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927155000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:11,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:11,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921781680] [2024-06-28 01:16:11,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:11,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:11,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 1364 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:11,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:11,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:11,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:12,291 INFO L124 PetriNetUnfolderBase]: 1256/2266 cut-off events. [2024-06-28 01:16:12,291 INFO L125 PetriNetUnfolderBase]: For 33026/33026 co-relation queries the response was YES. [2024-06-28 01:16:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10761 conditions, 2266 events. 1256/2266 cut-off events. For 33026/33026 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13800 event pairs, 274 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 10685. Up to 1750 conditions per place. [2024-06-28 01:16:12,306 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 152 selfloop transitions, 29 changer transitions 0/188 dead transitions. [2024-06-28 01:16:12,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 188 transitions, 1836 flow [2024-06-28 01:16:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:16:12,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:16:12,307 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 1364 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:16:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 188 transitions, 1836 flow [2024-06-28 01:16:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 188 transitions, 1776 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:12,391 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 1367 flow [2024-06-28 01:16:12,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-06-28 01:16:12,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 01:16:12,392 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 1367 flow [2024-06-28 01:16:12,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 01:16:12,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:12,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:16:12,392 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:12,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash 520854174, now seen corresponding path program 1 times [2024-06-28 01:16:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:12,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957789774] [2024-06-28 01:16:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:12,453 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 01:16:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957789774] [2024-06-28 01:16:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957789774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:12,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:12,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:16:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105904978] [2024-06-28 01:16:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:12,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:16:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:16:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:16:12,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 01:16:12,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 1367 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:12,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:12,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 01:16:12,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:12,947 INFO L124 PetriNetUnfolderBase]: 1905/3318 cut-off events. [2024-06-28 01:16:12,948 INFO L125 PetriNetUnfolderBase]: For 25588/25598 co-relation queries the response was YES. [2024-06-28 01:16:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15031 conditions, 3318 events. 1905/3318 cut-off events. For 25588/25598 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20968 event pairs, 470 based on Foata normal form. 6/3179 useless extension candidates. Maximal degree in co-relation 14955. Up to 1865 conditions per place. [2024-06-28 01:16:12,974 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 189 selfloop transitions, 13 changer transitions 160/407 dead transitions. [2024-06-28 01:16:12,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 407 transitions, 4268 flow [2024-06-28 01:16:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:16:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:16:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 01:16:12,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-28 01:16:12,975 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 1367 flow. Second operand 8 states and 174 transitions. [2024-06-28 01:16:12,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 407 transitions, 4268 flow [2024-06-28 01:16:13,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 407 transitions, 3956 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:16:13,061 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 1338 flow [2024-06-28 01:16:13,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1338, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2024-06-28 01:16:13,061 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 01:16:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 1338 flow [2024-06-28 01:16:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:13,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:13,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:16:13,061 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash -495490848, now seen corresponding path program 1 times [2024-06-28 01:16:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:13,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879169550] [2024-06-28 01:16:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:13,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:14,210 INFO 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 01:16:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:14,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879169550] [2024-06-28 01:16:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879169550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:14,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:14,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314609211] [2024-06-28 01:16:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:14,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:14,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:14,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 1338 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:14,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:14,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:14,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:15,022 INFO L124 PetriNetUnfolderBase]: 1421/2642 cut-off events. [2024-06-28 01:16:15,022 INFO L125 PetriNetUnfolderBase]: For 38990/39003 co-relation queries the response was YES. [2024-06-28 01:16:15,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12832 conditions, 2642 events. 1421/2642 cut-off events. For 38990/39003 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16902 event pairs, 347 based on Foata normal form. 9/2619 useless extension candidates. Maximal degree in co-relation 12751. Up to 2110 conditions per place. [2024-06-28 01:16:15,042 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 193 selfloop transitions, 23 changer transitions 3/227 dead transitions. [2024-06-28 01:16:15,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 227 transitions, 2215 flow [2024-06-28 01:16:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:16:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:16:15,043 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 1338 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:16:15,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 227 transitions, 2215 flow [2024-06-28 01:16:15,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 227 transitions, 2197 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:15,144 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1582 flow [2024-06-28 01:16:15,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1582, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-06-28 01:16:15,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-28 01:16:15,145 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1582 flow [2024-06-28 01:16:15,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:15,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:15,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:16:15,145 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:15,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash -35170806, now seen corresponding path program 2 times [2024-06-28 01:16:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759072543] [2024-06-28 01:16:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:16,520 INFO 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 01:16:16,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:16,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759072543] [2024-06-28 01:16:16,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759072543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:16,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:16,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705457724] [2024-06-28 01:16:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:16,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:16,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:16,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1582 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:16,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:16,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:16,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:17,424 INFO L124 PetriNetUnfolderBase]: 1478/2681 cut-off events. [2024-06-28 01:16:17,424 INFO L125 PetriNetUnfolderBase]: For 44848/44855 co-relation queries the response was YES. [2024-06-28 01:16:17,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13814 conditions, 2681 events. 1478/2681 cut-off events. For 44848/44855 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16617 event pairs, 233 based on Foata normal form. 7/2656 useless extension candidates. Maximal degree in co-relation 13726. Up to 2036 conditions per place. [2024-06-28 01:16:17,441 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 191 selfloop transitions, 33 changer transitions 0/232 dead transitions. [2024-06-28 01:16:17,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 232 transitions, 2386 flow [2024-06-28 01:16:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:16:17,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-28 01:16:17,444 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1582 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:16:17,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 232 transitions, 2386 flow [2024-06-28 01:16:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 232 transitions, 2330 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:16:17,533 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 1640 flow [2024-06-28 01:16:17,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1640, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-28 01:16:17,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 01:16:17,534 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 1640 flow [2024-06-28 01:16:17,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:17,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:17,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:16:17,535 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:17,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash -148077080, now seen corresponding path program 3 times [2024-06-28 01:16:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:17,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275569176] [2024-06-28 01:16:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:18,507 INFO 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 01:16:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275569176] [2024-06-28 01:16:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275569176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987934465] [2024-06-28 01:16:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:18,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:18,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 1640 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:18,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:18,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:18,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:19,268 INFO L124 PetriNetUnfolderBase]: 1540/2785 cut-off events. [2024-06-28 01:16:19,269 INFO L125 PetriNetUnfolderBase]: For 49356/49363 co-relation queries the response was YES. [2024-06-28 01:16:19,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14558 conditions, 2785 events. 1540/2785 cut-off events. For 49356/49363 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17430 event pairs, 280 based on Foata normal form. 9/2754 useless extension candidates. Maximal degree in co-relation 14470. Up to 2246 conditions per place. [2024-06-28 01:16:19,292 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 193 selfloop transitions, 35 changer transitions 0/236 dead transitions. [2024-06-28 01:16:19,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 236 transitions, 2398 flow [2024-06-28 01:16:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:16:19,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:16:19,293 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 1640 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:16:19,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 236 transitions, 2398 flow [2024-06-28 01:16:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 236 transitions, 2327 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:19,412 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 1731 flow [2024-06-28 01:16:19,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1731, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2024-06-28 01:16:19,412 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-28 01:16:19,413 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 1731 flow [2024-06-28 01:16:19,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:19,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:19,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:16:19,413 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:19,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 763076926, now seen corresponding path program 1 times [2024-06-28 01:16:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87846545] [2024-06-28 01:16:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:20,419 INFO 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 01:16:20,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87846545] [2024-06-28 01:16:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87846545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:20,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851925027] [2024-06-28 01:16:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:20,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:20,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 1731 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:20,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:20,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:20,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:21,239 INFO L124 PetriNetUnfolderBase]: 1564/2822 cut-off events. [2024-06-28 01:16:21,240 INFO L125 PetriNetUnfolderBase]: For 46537/46544 co-relation queries the response was YES. [2024-06-28 01:16:21,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14829 conditions, 2822 events. 1564/2822 cut-off events. For 46537/46544 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17668 event pairs, 279 based on Foata normal form. 6/2788 useless extension candidates. Maximal degree in co-relation 14741. Up to 2269 conditions per place. [2024-06-28 01:16:21,262 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 197 selfloop transitions, 35 changer transitions 0/240 dead transitions. [2024-06-28 01:16:21,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 240 transitions, 2569 flow [2024-06-28 01:16:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:16:21,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-28 01:16:21,264 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 1731 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:16:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 240 transitions, 2569 flow [2024-06-28 01:16:21,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 240 transitions, 2499 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:21,375 INFO L231 Difference]: Finished difference. Result has 195 places, 188 transitions, 1801 flow [2024-06-28 01:16:21,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1801, PETRI_PLACES=195, PETRI_TRANSITIONS=188} [2024-06-28 01:16:21,376 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-28 01:16:21,376 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 188 transitions, 1801 flow [2024-06-28 01:16:21,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:21,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:21,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:21,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:16:21,377 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:21,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 876695832, now seen corresponding path program 4 times [2024-06-28 01:16:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047814243] [2024-06-28 01:16:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:22,734 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 01:16:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047814243] [2024-06-28 01:16:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047814243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074862521] [2024-06-28 01:16:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:22,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:22,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 188 transitions, 1801 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:22,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:22,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:22,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:23,574 INFO L124 PetriNetUnfolderBase]: 1558/2806 cut-off events. [2024-06-28 01:16:23,574 INFO L125 PetriNetUnfolderBase]: For 46899/46906 co-relation queries the response was YES. [2024-06-28 01:16:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 2806 events. 1558/2806 cut-off events. For 46899/46906 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17517 event pairs, 277 based on Foata normal form. 9/2775 useless extension candidates. Maximal degree in co-relation 14550. Up to 2325 conditions per place. [2024-06-28 01:16:23,598 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 197 selfloop transitions, 27 changer transitions 0/232 dead transitions. [2024-06-28 01:16:23,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 232 transitions, 2435 flow [2024-06-28 01:16:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:16:23,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-28 01:16:23,599 INFO L175 Difference]: Start difference. First operand has 195 places, 188 transitions, 1801 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:16:23,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 232 transitions, 2435 flow [2024-06-28 01:16:23,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 232 transitions, 2361 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:16:23,717 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 1787 flow [2024-06-28 01:16:23,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2024-06-28 01:16:23,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:16:23,720 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 1787 flow [2024-06-28 01:16:23,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:23,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:23,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:16:23,721 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:23,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash 765878086, now seen corresponding path program 2 times [2024-06-28 01:16:23,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:23,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081989564] [2024-06-28 01:16:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081989564] [2024-06-28 01:16:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081989564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:24,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:24,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890050251] [2024-06-28 01:16:24,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:24,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:24,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:24,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 1787 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 01:16:24,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:24,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:24,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:25,165 INFO L124 PetriNetUnfolderBase]: 1556/2803 cut-off events. [2024-06-28 01:16:25,165 INFO L125 PetriNetUnfolderBase]: For 43346/43353 co-relation queries the response was YES. [2024-06-28 01:16:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14587 conditions, 2803 events. 1556/2803 cut-off events. For 43346/43353 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17530 event pairs, 277 based on Foata normal form. 6/2769 useless extension candidates. Maximal degree in co-relation 14496. Up to 2257 conditions per place. [2024-06-28 01:16:25,189 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 36 changer transitions 0/226 dead transitions. [2024-06-28 01:16:25,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 2383 flow [2024-06-28 01:16:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:16:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:16:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:16:25,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-28 01:16:25,190 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 1787 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:16:25,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 2383 flow [2024-06-28 01:16:25,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 226 transitions, 2286 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 01:16:25,316 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 1775 flow [2024-06-28 01:16:25,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1775, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2024-06-28 01:16:25,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 01:16:25,317 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 1775 flow [2024-06-28 01:16:25,317 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 01:16:25,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:25,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:25,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:16:25,317 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:25,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1239963806, now seen corresponding path program 1 times [2024-06-28 01:16:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425400087] [2024-06-28 01:16:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:25,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425400087] [2024-06-28 01:16:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425400087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:26,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372188362] [2024-06-28 01:16:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:26,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:26,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:26,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 1775 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:26,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:26,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:26,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:27,122 INFO L124 PetriNetUnfolderBase]: 1778/3173 cut-off events. [2024-06-28 01:16:27,122 INFO L125 PetriNetUnfolderBase]: For 53789/53834 co-relation queries the response was YES. [2024-06-28 01:16:27,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16868 conditions, 3173 events. 1778/3173 cut-off events. For 53789/53834 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20316 event pairs, 674 based on Foata normal form. 19/3138 useless extension candidates. Maximal degree in co-relation 16776. Up to 2577 conditions per place. [2024-06-28 01:16:27,149 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 214 selfloop transitions, 44 changer transitions 0/266 dead transitions. [2024-06-28 01:16:27,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 266 transitions, 3052 flow [2024-06-28 01:16:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:16:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:16:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:16:27,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-28 01:16:27,150 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 1775 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:16:27,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 266 transitions, 3052 flow [2024-06-28 01:16:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 266 transitions, 2920 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:27,289 INFO L231 Difference]: Finished difference. Result has 208 places, 223 transitions, 2326 flow [2024-06-28 01:16:27,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=208, PETRI_TRANSITIONS=223} [2024-06-28 01:16:27,289 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 01:16:27,289 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 223 transitions, 2326 flow [2024-06-28 01:16:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:27,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:27,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:27,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:16:27,290 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:27,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2146831564, now seen corresponding path program 2 times [2024-06-28 01:16:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:27,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709811105] [2024-06-28 01:16:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:28,126 INFO 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 01:16:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709811105] [2024-06-28 01:16:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709811105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74960754] [2024-06-28 01:16:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:28,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:28,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 223 transitions, 2326 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:28,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:28,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:29,213 INFO L124 PetriNetUnfolderBase]: 1924/3710 cut-off events. [2024-06-28 01:16:29,213 INFO L125 PetriNetUnfolderBase]: For 57932/57943 co-relation queries the response was YES. [2024-06-28 01:16:29,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19370 conditions, 3710 events. 1924/3710 cut-off events. For 57932/57943 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 26345 event pairs, 485 based on Foata normal form. 9/3707 useless extension candidates. Maximal degree in co-relation 19271. Up to 2738 conditions per place. [2024-06-28 01:16:29,247 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 266 selfloop transitions, 61 changer transitions 0/335 dead transitions. [2024-06-28 01:16:29,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 335 transitions, 4129 flow [2024-06-28 01:16:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:16:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:16:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2024-06-28 01:16:29,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4698544698544699 [2024-06-28 01:16:29,248 INFO L175 Difference]: Start difference. First operand has 208 places, 223 transitions, 2326 flow. Second operand 13 states and 226 transitions. [2024-06-28 01:16:29,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 335 transitions, 4129 flow [2024-06-28 01:16:29,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 335 transitions, 3987 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 01:16:29,409 INFO L231 Difference]: Finished difference. Result has 224 places, 274 transitions, 3127 flow [2024-06-28 01:16:29,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3127, PETRI_PLACES=224, PETRI_TRANSITIONS=274} [2024-06-28 01:16:29,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 01:16:29,409 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 274 transitions, 3127 flow [2024-06-28 01:16:29,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:29,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:29,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:29,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:16:29,410 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:29,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:29,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1127636676, now seen corresponding path program 3 times [2024-06-28 01:16:29,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:29,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719063476] [2024-06-28 01:16:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:30,317 INFO 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 01:16:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:30,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719063476] [2024-06-28 01:16:30,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719063476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:30,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:30,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407787274] [2024-06-28 01:16:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:30,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:30,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 274 transitions, 3127 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:31,487 INFO L124 PetriNetUnfolderBase]: 2290/4382 cut-off events. [2024-06-28 01:16:31,487 INFO L125 PetriNetUnfolderBase]: For 75943/75968 co-relation queries the response was YES. [2024-06-28 01:16:31,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25009 conditions, 4382 events. 2290/4382 cut-off events. For 75943/75968 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32047 event pairs, 578 based on Foata normal form. 26/4398 useless extension candidates. Maximal degree in co-relation 24902. Up to 3070 conditions per place. [2024-06-28 01:16:31,530 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 295 selfloop transitions, 107 changer transitions 0/410 dead transitions. [2024-06-28 01:16:31,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 410 transitions, 5519 flow [2024-06-28 01:16:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:16:31,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-28 01:16:31,532 INFO L175 Difference]: Start difference. First operand has 224 places, 274 transitions, 3127 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:16:31,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 410 transitions, 5519 flow [2024-06-28 01:16:31,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 410 transitions, 5320 flow, removed 96 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:31,737 INFO L231 Difference]: Finished difference. Result has 238 places, 350 transitions, 4515 flow [2024-06-28 01:16:31,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4515, PETRI_PLACES=238, PETRI_TRANSITIONS=350} [2024-06-28 01:16:31,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-28 01:16:31,738 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 350 transitions, 4515 flow [2024-06-28 01:16:31,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:31,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:31,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:31,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:16:31,738 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:31,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1172046338, now seen corresponding path program 3 times [2024-06-28 01:16:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:31,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428539220] [2024-06-28 01:16:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:32,412 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 01:16:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428539220] [2024-06-28 01:16:32,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428539220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:32,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:32,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:32,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576916381] [2024-06-28 01:16:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:32,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:32,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:32,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 350 transitions, 4515 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 01:16:32,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:32,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:33,746 INFO L124 PetriNetUnfolderBase]: 2891/5394 cut-off events. [2024-06-28 01:16:33,746 INFO L125 PetriNetUnfolderBase]: For 85694/85742 co-relation queries the response was YES. [2024-06-28 01:16:33,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32454 conditions, 5394 events. 2891/5394 cut-off events. For 85694/85742 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40589 event pairs, 385 based on Foata normal form. 41/5399 useless extension candidates. Maximal degree in co-relation 32340. Up to 3017 conditions per place. [2024-06-28 01:16:33,805 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 403 selfloop transitions, 210 changer transitions 0/621 dead transitions. [2024-06-28 01:16:33,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 621 transitions, 8789 flow [2024-06-28 01:16:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:16:33,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-28 01:16:33,806 INFO L175 Difference]: Start difference. First operand has 238 places, 350 transitions, 4515 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:16:33,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 621 transitions, 8789 flow [2024-06-28 01:16:34,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 621 transitions, 8708 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:34,113 INFO L231 Difference]: Finished difference. Result has 251 places, 474 transitions, 6712 flow [2024-06-28 01:16:34,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6712, PETRI_PLACES=251, PETRI_TRANSITIONS=474} [2024-06-28 01:16:34,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 01:16:34,114 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 474 transitions, 6712 flow [2024-06-28 01:16:34,114 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 01:16:34,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:34,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:34,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:16:34,114 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:34,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2088072278, now seen corresponding path program 4 times [2024-06-28 01:16:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208832571] [2024-06-28 01:16:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208832571] [2024-06-28 01:16:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208832571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534738491] [2024-06-28 01:16:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:34,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:34,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:35,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:35,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 474 transitions, 6712 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:35,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:35,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:35,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:36,857 INFO L124 PetriNetUnfolderBase]: 3795/7108 cut-off events. [2024-06-28 01:16:36,857 INFO L125 PetriNetUnfolderBase]: For 116718/116815 co-relation queries the response was YES. [2024-06-28 01:16:36,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44190 conditions, 7108 events. 3795/7108 cut-off events. For 116718/116815 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 56520 event pairs, 451 based on Foata normal form. 82/7153 useless extension candidates. Maximal degree in co-relation 44069. Up to 3590 conditions per place. [2024-06-28 01:16:36,937 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 551 selfloop transitions, 239 changer transitions 0/798 dead transitions. [2024-06-28 01:16:36,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 798 transitions, 11786 flow [2024-06-28 01:16:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:16:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:16:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 267 transitions. [2024-06-28 01:16:36,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154440154440154 [2024-06-28 01:16:36,938 INFO L175 Difference]: Start difference. First operand has 251 places, 474 transitions, 6712 flow. Second operand 14 states and 267 transitions. [2024-06-28 01:16:36,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 798 transitions, 11786 flow [2024-06-28 01:16:37,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 798 transitions, 11619 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:37,519 INFO L231 Difference]: Finished difference. Result has 271 places, 615 transitions, 8978 flow [2024-06-28 01:16:37,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8978, PETRI_PLACES=271, PETRI_TRANSITIONS=615} [2024-06-28 01:16:37,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 01:16:37,520 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 615 transitions, 8978 flow [2024-06-28 01:16:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:37,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:37,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:37,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:16:37,521 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:37,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2097819344, now seen corresponding path program 5 times [2024-06-28 01:16:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747084903] [2024-06-28 01:16:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:38,566 INFO 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 01:16:38,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:38,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747084903] [2024-06-28 01:16:38,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747084903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:38,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:38,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:38,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049368966] [2024-06-28 01:16:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:38,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:38,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 615 transitions, 8978 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:38,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:38,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:38,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:40,922 INFO L124 PetriNetUnfolderBase]: 4431/8383 cut-off events. [2024-06-28 01:16:40,922 INFO L125 PetriNetUnfolderBase]: For 158908/158937 co-relation queries the response was YES. [2024-06-28 01:16:40,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55967 conditions, 8383 events. 4431/8383 cut-off events. For 158908/158937 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 69116 event pairs, 566 based on Foata normal form. 28/8366 useless extension candidates. Maximal degree in co-relation 55836. Up to 3899 conditions per place. [2024-06-28 01:16:41,029 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 591 selfloop transitions, 320 changer transitions 0/919 dead transitions. [2024-06-28 01:16:41,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 919 transitions, 14777 flow [2024-06-28 01:16:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 01:16:41,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331695331695332 [2024-06-28 01:16:41,030 INFO L175 Difference]: Start difference. First operand has 271 places, 615 transitions, 8978 flow. Second operand 11 states and 217 transitions. [2024-06-28 01:16:41,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 919 transitions, 14777 flow [2024-06-28 01:16:41,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 919 transitions, 14488 flow, removed 139 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:41,755 INFO L231 Difference]: Finished difference. Result has 286 places, 737 transitions, 11693 flow [2024-06-28 01:16:41,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8865, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11693, PETRI_PLACES=286, PETRI_TRANSITIONS=737} [2024-06-28 01:16:41,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 01:16:41,756 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 737 transitions, 11693 flow [2024-06-28 01:16:41,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:41,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:41,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:16:41,757 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:41,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2097639668, now seen corresponding path program 4 times [2024-06-28 01:16:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:41,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104074116] [2024-06-28 01:16:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:41,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104074116] [2024-06-28 01:16:42,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104074116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:42,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:42,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:42,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275514545] [2024-06-28 01:16:42,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:42,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:42,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:42,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:42,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 737 transitions, 11693 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 01:16:42,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:42,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:44,682 INFO L124 PetriNetUnfolderBase]: 4464/8280 cut-off events. [2024-06-28 01:16:44,683 INFO L125 PetriNetUnfolderBase]: For 174404/174415 co-relation queries the response was YES. [2024-06-28 01:16:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59713 conditions, 8280 events. 4464/8280 cut-off events. For 174404/174415 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 67158 event pairs, 658 based on Foata normal form. 9/8253 useless extension candidates. Maximal degree in co-relation 59574. Up to 4974 conditions per place. [2024-06-28 01:16:44,779 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 693 selfloop transitions, 227 changer transitions 0/928 dead transitions. [2024-06-28 01:16:44,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 928 transitions, 15981 flow [2024-06-28 01:16:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:16:44,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-28 01:16:44,780 INFO L175 Difference]: Start difference. First operand has 286 places, 737 transitions, 11693 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:16:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 928 transitions, 15981 flow [2024-06-28 01:16:45,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 928 transitions, 15842 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 01:16:45,586 INFO L231 Difference]: Finished difference. Result has 295 places, 738 transitions, 12106 flow [2024-06-28 01:16:45,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11566, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12106, PETRI_PLACES=295, PETRI_TRANSITIONS=738} [2024-06-28 01:16:45,587 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-28 01:16:45,587 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 738 transitions, 12106 flow [2024-06-28 01:16:45,587 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 01:16:45,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:45,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:45,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:16:45,588 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:45,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2097639854, now seen corresponding path program 6 times [2024-06-28 01:16:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624163514] [2024-06-28 01:16:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624163514] [2024-06-28 01:16:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624163514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:46,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536730185] [2024-06-28 01:16:46,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:46,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:46,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:46,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 738 transitions, 12106 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:46,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:46,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:46,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:49,145 INFO L124 PetriNetUnfolderBase]: 4426/8424 cut-off events. [2024-06-28 01:16:49,146 INFO L125 PetriNetUnfolderBase]: For 176251/176282 co-relation queries the response was YES. [2024-06-28 01:16:49,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60110 conditions, 8424 events. 4426/8424 cut-off events. For 176251/176282 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 70044 event pairs, 576 based on Foata normal form. 20/8407 useless extension candidates. Maximal degree in co-relation 59968. Up to 4205 conditions per place. [2024-06-28 01:16:49,267 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 606 selfloop transitions, 306 changer transitions 0/920 dead transitions. [2024-06-28 01:16:49,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 920 transitions, 16278 flow [2024-06-28 01:16:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:16:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:16:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 254 transitions. [2024-06-28 01:16:49,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280665280665281 [2024-06-28 01:16:49,268 INFO L175 Difference]: Start difference. First operand has 295 places, 738 transitions, 12106 flow. Second operand 13 states and 254 transitions. [2024-06-28 01:16:49,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 920 transitions, 16278 flow [2024-06-28 01:16:50,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 920 transitions, 15799 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:16:50,179 INFO L231 Difference]: Finished difference. Result has 304 places, 748 transitions, 12598 flow [2024-06-28 01:16:50,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11719, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12598, PETRI_PLACES=304, PETRI_TRANSITIONS=748} [2024-06-28 01:16:50,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 01:16:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 748 transitions, 12598 flow [2024-06-28 01:16:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:50,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:50,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:16:50,180 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:50,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1352360950, now seen corresponding path program 5 times [2024-06-28 01:16:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033619328] [2024-06-28 01:16:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:51,212 INFO 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 01:16:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033619328] [2024-06-28 01:16:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033619328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:51,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:16:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085991631] [2024-06-28 01:16:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:16:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:16:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:16:51,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:51,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 748 transitions, 12598 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 01:16:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:51,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:53,532 INFO L124 PetriNetUnfolderBase]: 4453/8602 cut-off events. [2024-06-28 01:16:53,532 INFO L125 PetriNetUnfolderBase]: For 182407/182496 co-relation queries the response was YES. [2024-06-28 01:16:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61895 conditions, 8602 events. 4453/8602 cut-off events. For 182407/182496 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 72330 event pairs, 907 based on Foata normal form. 89/8672 useless extension candidates. Maximal degree in co-relation 61750. Up to 6095 conditions per place. [2024-06-28 01:16:53,650 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 699 selfloop transitions, 179 changer transitions 0/886 dead transitions. [2024-06-28 01:16:53,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 886 transitions, 16208 flow [2024-06-28 01:16:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:16:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:16:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:16:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-28 01:16:53,651 INFO L175 Difference]: Start difference. First operand has 304 places, 748 transitions, 12598 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:16:53,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 886 transitions, 16208 flow [2024-06-28 01:16:54,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 886 transitions, 15606 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 01:16:54,482 INFO L231 Difference]: Finished difference. Result has 308 places, 800 transitions, 13308 flow [2024-06-28 01:16:54,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12032, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13308, PETRI_PLACES=308, PETRI_TRANSITIONS=800} [2024-06-28 01:16:54,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-28 01:16:54,483 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 800 transitions, 13308 flow [2024-06-28 01:16:54,483 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 01:16:54,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:54,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:54,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:16:54,483 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:54,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash 503991872, now seen corresponding path program 7 times [2024-06-28 01:16:54,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:54,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39686219] [2024-06-28 01:16:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:54,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39686219] [2024-06-28 01:16:55,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39686219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928647927] [2024-06-28 01:16:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 800 transitions, 13308 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:55,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:16:57,694 INFO L124 PetriNetUnfolderBase]: 4716/9124 cut-off events. [2024-06-28 01:16:57,695 INFO L125 PetriNetUnfolderBase]: For 196203/196258 co-relation queries the response was YES. [2024-06-28 01:16:57,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65307 conditions, 9124 events. 4716/9124 cut-off events. For 196203/196258 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 78294 event pairs, 1364 based on Foata normal form. 38/9138 useless extension candidates. Maximal degree in co-relation 65159. Up to 6710 conditions per place. [2024-06-28 01:16:57,817 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 737 selfloop transitions, 163 changer transitions 0/908 dead transitions. [2024-06-28 01:16:57,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 908 transitions, 16724 flow [2024-06-28 01:16:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:16:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:16:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:16:57,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:16:57,821 INFO L175 Difference]: Start difference. First operand has 308 places, 800 transitions, 13308 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:16:57,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 908 transitions, 16724 flow [2024-06-28 01:16:58,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 908 transitions, 16425 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-28 01:16:58,745 INFO L231 Difference]: Finished difference. Result has 315 places, 848 transitions, 14469 flow [2024-06-28 01:16:58,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13009, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14469, PETRI_PLACES=315, PETRI_TRANSITIONS=848} [2024-06-28 01:16:58,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 01:16:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 848 transitions, 14469 flow [2024-06-28 01:16:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:58,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:16:58,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:16:58,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:16:58,746 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:16:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:16:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash 508455562, now seen corresponding path program 6 times [2024-06-28 01:16:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:16:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035608268] [2024-06-28 01:16:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:16:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:16:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:16:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:16:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:16:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035608268] [2024-06-28 01:16:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035608268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:16:59,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:16:59,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:16:59,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610895157] [2024-06-28 01:16:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:16:59,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:16:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:16:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:16:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:16:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:16:59,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 848 transitions, 14469 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:16:59,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:16:59,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:16:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:02,485 INFO L124 PetriNetUnfolderBase]: 4799/9388 cut-off events. [2024-06-28 01:17:02,485 INFO L125 PetriNetUnfolderBase]: For 201160/201222 co-relation queries the response was YES. [2024-06-28 01:17:02,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67241 conditions, 9388 events. 4799/9388 cut-off events. For 201160/201222 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 82077 event pairs, 1350 based on Foata normal form. 41/9404 useless extension candidates. Maximal degree in co-relation 67091. Up to 7215 conditions per place. [2024-06-28 01:17:02,599 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 818 selfloop transitions, 107 changer transitions 0/933 dead transitions. [2024-06-28 01:17:02,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 933 transitions, 17285 flow [2024-06-28 01:17:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:17:02,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 01:17:02,605 INFO L175 Difference]: Start difference. First operand has 315 places, 848 transitions, 14469 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:17:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 933 transitions, 17285 flow [2024-06-28 01:17:03,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 933 transitions, 17127 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:03,569 INFO L231 Difference]: Finished difference. Result has 327 places, 885 transitions, 15243 flow [2024-06-28 01:17:03,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14311, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15243, PETRI_PLACES=327, PETRI_TRANSITIONS=885} [2024-06-28 01:17:03,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 01:17:03,570 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 885 transitions, 15243 flow [2024-06-28 01:17:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:03,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:03,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:17:03,571 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:03,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash 508455686, now seen corresponding path program 5 times [2024-06-28 01:17:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082677726] [2024-06-28 01:17:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082677726] [2024-06-28 01:17:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082677726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856724826] [2024-06-28 01:17:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:04,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:04,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 885 transitions, 15243 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:04,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:04,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:04,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:07,377 INFO L124 PetriNetUnfolderBase]: 5025/9866 cut-off events. [2024-06-28 01:17:07,377 INFO L125 PetriNetUnfolderBase]: For 210583/210636 co-relation queries the response was YES. [2024-06-28 01:17:07,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71082 conditions, 9866 events. 5025/9866 cut-off events. For 210583/210636 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 87164 event pairs, 1314 based on Foata normal form. 30/9876 useless extension candidates. Maximal degree in co-relation 70924. Up to 6879 conditions per place. [2024-06-28 01:17:07,512 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 815 selfloop transitions, 219 changer transitions 0/1042 dead transitions. [2024-06-28 01:17:07,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1042 transitions, 19490 flow [2024-06-28 01:17:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:17:07,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-28 01:17:07,513 INFO L175 Difference]: Start difference. First operand has 327 places, 885 transitions, 15243 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:17:07,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1042 transitions, 19490 flow [2024-06-28 01:17:08,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1042 transitions, 19391 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:08,595 INFO L231 Difference]: Finished difference. Result has 341 places, 980 transitions, 17458 flow [2024-06-28 01:17:08,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15144, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17458, PETRI_PLACES=341, PETRI_TRANSITIONS=980} [2024-06-28 01:17:08,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 01:17:08,596 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 980 transitions, 17458 flow [2024-06-28 01:17:08,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:08,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:08,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:08,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:17:08,596 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:08,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1353431788, now seen corresponding path program 6 times [2024-06-28 01:17:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:08,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913513879] [2024-06-28 01:17:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:10,168 INFO 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 01:17:10,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:10,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913513879] [2024-06-28 01:17:10,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913513879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:10,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:10,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630471740] [2024-06-28 01:17:10,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:10,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:10,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 980 transitions, 17458 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:10,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:10,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:10,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:13,132 INFO L124 PetriNetUnfolderBase]: 5053/9916 cut-off events. [2024-06-28 01:17:13,132 INFO L125 PetriNetUnfolderBase]: For 222918/222987 co-relation queries the response was YES. [2024-06-28 01:17:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73495 conditions, 9916 events. 5053/9916 cut-off events. For 222918/222987 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 87655 event pairs, 1336 based on Foata normal form. 33/9926 useless extension candidates. Maximal degree in co-relation 73330. Up to 7009 conditions per place. [2024-06-28 01:17:13,284 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 837 selfloop transitions, 203 changer transitions 0/1048 dead transitions. [2024-06-28 01:17:13,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 1048 transitions, 20332 flow [2024-06-28 01:17:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:17:13,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-28 01:17:13,285 INFO L175 Difference]: Start difference. First operand has 341 places, 980 transitions, 17458 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:17:13,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 1048 transitions, 20332 flow [2024-06-28 01:17:14,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1048 transitions, 20109 flow, removed 106 selfloop flow, removed 2 redundant places. [2024-06-28 01:17:14,721 INFO L231 Difference]: Finished difference. Result has 350 places, 987 transitions, 17845 flow [2024-06-28 01:17:14,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17281, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17845, PETRI_PLACES=350, PETRI_TRANSITIONS=987} [2024-06-28 01:17:14,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-28 01:17:14,722 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 987 transitions, 17845 flow [2024-06-28 01:17:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:14,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:14,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:14,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:17:14,722 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:14,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:14,723 INFO L85 PathProgramCache]: Analyzing trace with hash 508640012, now seen corresponding path program 8 times [2024-06-28 01:17:14,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:14,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809825988] [2024-06-28 01:17:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:15,611 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 01:17:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809825988] [2024-06-28 01:17:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809825988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941794878] [2024-06-28 01:17:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:15,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 987 transitions, 17845 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:15,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:19,066 INFO L124 PetriNetUnfolderBase]: 5521/10608 cut-off events. [2024-06-28 01:17:19,066 INFO L125 PetriNetUnfolderBase]: For 258633/258711 co-relation queries the response was YES. [2024-06-28 01:17:19,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79994 conditions, 10608 events. 5521/10608 cut-off events. For 258633/258711 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 92960 event pairs, 1288 based on Foata normal form. 61/10649 useless extension candidates. Maximal degree in co-relation 79827. Up to 5633 conditions per place. [2024-06-28 01:17:19,226 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 747 selfloop transitions, 386 changer transitions 0/1141 dead transitions. [2024-06-28 01:17:19,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1141 transitions, 22381 flow [2024-06-28 01:17:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 01:17:19,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-28 01:17:19,227 INFO L175 Difference]: Start difference. First operand has 350 places, 987 transitions, 17845 flow. Second operand 11 states and 215 transitions. [2024-06-28 01:17:19,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1141 transitions, 22381 flow [2024-06-28 01:17:20,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1141 transitions, 21964 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:20,630 INFO L231 Difference]: Finished difference. Result has 357 places, 1045 transitions, 19584 flow [2024-06-28 01:17:20,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17428, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19584, PETRI_PLACES=357, PETRI_TRANSITIONS=1045} [2024-06-28 01:17:20,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 01:17:20,631 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 1045 transitions, 19584 flow [2024-06-28 01:17:20,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:20,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:20,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:20,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:17:20,632 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:20,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash 508633316, now seen corresponding path program 7 times [2024-06-28 01:17:20,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383675239] [2024-06-28 01:17:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383675239] [2024-06-28 01:17:22,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383675239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:22,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:22,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:22,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760686291] [2024-06-28 01:17:22,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:22,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:22,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 1045 transitions, 19584 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:22,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:22,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:25,302 INFO L124 PetriNetUnfolderBase]: 5519/10801 cut-off events. [2024-06-28 01:17:25,303 INFO L125 PetriNetUnfolderBase]: For 270543/270637 co-relation queries the response was YES. [2024-06-28 01:17:25,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82492 conditions, 10801 events. 5519/10801 cut-off events. For 270543/270637 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 96624 event pairs, 1451 based on Foata normal form. 57/10835 useless extension candidates. Maximal degree in co-relation 82321. Up to 7737 conditions per place. [2024-06-28 01:17:25,492 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 886 selfloop transitions, 212 changer transitions 0/1106 dead transitions. [2024-06-28 01:17:25,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1106 transitions, 22383 flow [2024-06-28 01:17:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:17:25,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-28 01:17:25,494 INFO L175 Difference]: Start difference. First operand has 357 places, 1045 transitions, 19584 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:17:25,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1106 transitions, 22383 flow [2024-06-28 01:17:27,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1106 transitions, 22064 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:27,146 INFO L231 Difference]: Finished difference. Result has 363 places, 1045 transitions, 19702 flow [2024-06-28 01:17:27,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19265, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19702, PETRI_PLACES=363, PETRI_TRANSITIONS=1045} [2024-06-28 01:17:27,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-28 01:17:27,147 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 1045 transitions, 19702 flow [2024-06-28 01:17:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:27,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:27,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:27,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:17:27,147 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:27,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1174337462, now seen corresponding path program 1 times [2024-06-28 01:17:27,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449950472] [2024-06-28 01:17:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:28,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449950472] [2024-06-28 01:17:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449950472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981809373] [2024-06-28 01:17:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:28,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:28,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1045 transitions, 19702 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:28,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:28,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:28,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:31,298 INFO L124 PetriNetUnfolderBase]: 5553/10767 cut-off events. [2024-06-28 01:17:31,298 INFO L125 PetriNetUnfolderBase]: For 274479/274545 co-relation queries the response was YES. [2024-06-28 01:17:31,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82966 conditions, 10767 events. 5553/10767 cut-off events. For 274479/274545 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 95408 event pairs, 1659 based on Foata normal form. 33/10776 useless extension candidates. Maximal degree in co-relation 82793. Up to 8458 conditions per place. [2024-06-28 01:17:31,479 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 994 selfloop transitions, 92 changer transitions 0/1094 dead transitions. [2024-06-28 01:17:31,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1094 transitions, 22318 flow [2024-06-28 01:17:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:17:31,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:17:31,480 INFO L175 Difference]: Start difference. First operand has 363 places, 1045 transitions, 19702 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:17:31,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1094 transitions, 22318 flow [2024-06-28 01:17:33,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1094 transitions, 21852 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 01:17:33,087 INFO L231 Difference]: Finished difference. Result has 365 places, 1055 transitions, 19610 flow [2024-06-28 01:17:33,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19239, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19610, PETRI_PLACES=365, PETRI_TRANSITIONS=1055} [2024-06-28 01:17:33,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 01:17:33,088 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1055 transitions, 19610 flow [2024-06-28 01:17:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:33,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:33,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:33,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:17:33,088 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:33,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1406803728, now seen corresponding path program 9 times [2024-06-28 01:17:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136873680] [2024-06-28 01:17:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:33,959 INFO 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 01:17:33,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:33,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136873680] [2024-06-28 01:17:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136873680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:33,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:33,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902241002] [2024-06-28 01:17:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:33,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:34,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:34,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1055 transitions, 19610 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:34,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:34,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:34,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:37,672 INFO L124 PetriNetUnfolderBase]: 5729/11064 cut-off events. [2024-06-28 01:17:37,672 INFO L125 PetriNetUnfolderBase]: For 297106/297170 co-relation queries the response was YES. [2024-06-28 01:17:37,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85920 conditions, 11064 events. 5729/11064 cut-off events. For 297106/297170 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 98156 event pairs, 1671 based on Foata normal form. 32/11072 useless extension candidates. Maximal degree in co-relation 85744. Up to 8359 conditions per place. [2024-06-28 01:17:37,826 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 1003 selfloop transitions, 125 changer transitions 0/1136 dead transitions. [2024-06-28 01:17:37,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1136 transitions, 23148 flow [2024-06-28 01:17:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:37,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:17:37,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061425061425061 [2024-06-28 01:17:37,827 INFO L175 Difference]: Start difference. First operand has 365 places, 1055 transitions, 19610 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:17:37,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1136 transitions, 23148 flow [2024-06-28 01:17:39,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1136 transitions, 23079 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:39,394 INFO L231 Difference]: Finished difference. Result has 374 places, 1081 transitions, 20400 flow [2024-06-28 01:17:39,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19541, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=934, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20400, PETRI_PLACES=374, PETRI_TRANSITIONS=1081} [2024-06-28 01:17:39,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-28 01:17:39,395 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 1081 transitions, 20400 flow [2024-06-28 01:17:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:39,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:39,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:39,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:17:39,396 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:39,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash 674272450, now seen corresponding path program 8 times [2024-06-28 01:17:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:39,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752292870] [2024-06-28 01:17:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:40,180 INFO 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 01:17:40,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752292870] [2024-06-28 01:17:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752292870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:40,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228538497] [2024-06-28 01:17:40,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:40,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:40,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1081 transitions, 20400 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 01:17:40,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:40,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:40,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:43,696 INFO L124 PetriNetUnfolderBase]: 5777/11198 cut-off events. [2024-06-28 01:17:43,696 INFO L125 PetriNetUnfolderBase]: For 305402/305475 co-relation queries the response was YES. [2024-06-28 01:17:43,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87739 conditions, 11198 events. 5777/11198 cut-off events. For 305402/305475 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 99801 event pairs, 1818 based on Foata normal form. 42/11216 useless extension candidates. Maximal degree in co-relation 87559. Up to 8556 conditions per place. [2024-06-28 01:17:43,873 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1025 selfloop transitions, 119 changer transitions 0/1152 dead transitions. [2024-06-28 01:17:43,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1152 transitions, 23784 flow [2024-06-28 01:17:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:17:43,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-28 01:17:43,874 INFO L175 Difference]: Start difference. First operand has 374 places, 1081 transitions, 20400 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:17:43,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1152 transitions, 23784 flow [2024-06-28 01:17:45,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1152 transitions, 23547 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:45,708 INFO L231 Difference]: Finished difference. Result has 381 places, 1100 transitions, 20892 flow [2024-06-28 01:17:45,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20163, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=969, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20892, PETRI_PLACES=381, PETRI_TRANSITIONS=1100} [2024-06-28 01:17:45,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-28 01:17:45,709 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1100 transitions, 20892 flow [2024-06-28 01:17:45,709 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 01:17:45,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:45,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:17:45,710 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:45,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1400547618, now seen corresponding path program 10 times [2024-06-28 01:17:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:45,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315157851] [2024-06-28 01:17:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:45,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:46,548 INFO 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 01:17:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315157851] [2024-06-28 01:17:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315157851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001160350] [2024-06-28 01:17:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:17:46,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:46,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1100 transitions, 20892 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:46,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:46,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:50,368 INFO L124 PetriNetUnfolderBase]: 5827/11258 cut-off events. [2024-06-28 01:17:50,369 INFO L125 PetriNetUnfolderBase]: For 312887/312952 co-relation queries the response was YES. [2024-06-28 01:17:50,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88944 conditions, 11258 events. 5827/11258 cut-off events. For 312887/312952 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 100245 event pairs, 1543 based on Foata normal form. 35/11269 useless extension candidates. Maximal degree in co-relation 88760. Up to 8015 conditions per place. [2024-06-28 01:17:50,561 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 990 selfloop transitions, 172 changer transitions 0/1170 dead transitions. [2024-06-28 01:17:50,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1170 transitions, 24476 flow [2024-06-28 01:17:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 01:17:50,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-28 01:17:50,563 INFO L175 Difference]: Start difference. First operand has 381 places, 1100 transitions, 20892 flow. Second operand 11 states and 214 transitions. [2024-06-28 01:17:50,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1170 transitions, 24476 flow [2024-06-28 01:17:52,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1170 transitions, 24211 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:52,453 INFO L231 Difference]: Finished difference. Result has 387 places, 1106 transitions, 21179 flow [2024-06-28 01:17:52,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20627, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21179, PETRI_PLACES=387, PETRI_TRANSITIONS=1106} [2024-06-28 01:17:52,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-28 01:17:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 1106 transitions, 21179 flow [2024-06-28 01:17:52,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:52,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:52,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:17:52,454 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:52,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1400367942, now seen corresponding path program 9 times [2024-06-28 01:17:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000411130] [2024-06-28 01:17:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:53,260 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 01:17:53,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000411130] [2024-06-28 01:17:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000411130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054535498] [2024-06-28 01:17:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:53,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:17:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1106 transitions, 21179 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 01:17:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:17:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:56,707 INFO L124 PetriNetUnfolderBase]: 5825/11256 cut-off events. [2024-06-28 01:17:56,708 INFO L125 PetriNetUnfolderBase]: For 312035/312096 co-relation queries the response was YES. [2024-06-28 01:17:56,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89210 conditions, 11256 events. 5825/11256 cut-off events. For 312035/312096 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 100078 event pairs, 1795 based on Foata normal form. 30/11263 useless extension candidates. Maximal degree in co-relation 89024. Up to 8632 conditions per place. [2024-06-28 01:17:56,899 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1033 selfloop transitions, 118 changer transitions 0/1159 dead transitions. [2024-06-28 01:17:56,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1159 transitions, 24074 flow [2024-06-28 01:17:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 01:17:56,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-28 01:17:56,900 INFO L175 Difference]: Start difference. First operand has 387 places, 1106 transitions, 21179 flow. Second operand 10 states and 188 transitions. [2024-06-28 01:17:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1159 transitions, 24074 flow [2024-06-28 01:17:58,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1159 transitions, 23601 flow, removed 109 selfloop flow, removed 8 redundant places. [2024-06-28 01:17:58,809 INFO L231 Difference]: Finished difference. Result has 389 places, 1106 transitions, 20960 flow [2024-06-28 01:17:58,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20706, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20960, PETRI_PLACES=389, PETRI_TRANSITIONS=1106} [2024-06-28 01:17:58,810 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 01:17:58,810 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1106 transitions, 20960 flow [2024-06-28 01:17:58,810 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 01:17:58,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:58,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:58,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:17:58,811 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:17:58,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash 674094696, now seen corresponding path program 7 times [2024-06-28 01:17:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:58,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497705688] [2024-06-28 01:17:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:59,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497705688] [2024-06-28 01:17:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497705688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:59,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:59,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:17:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386690398] [2024-06-28 01:17:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:59,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:17:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:17:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:00,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:00,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1106 transitions, 20960 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:00,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:00,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:00,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:03,267 INFO L124 PetriNetUnfolderBase]: 5845/11267 cut-off events. [2024-06-28 01:18:03,267 INFO L125 PetriNetUnfolderBase]: For 312437/312500 co-relation queries the response was YES. [2024-06-28 01:18:03,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88745 conditions, 11267 events. 5845/11267 cut-off events. For 312437/312500 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 100087 event pairs, 1930 based on Foata normal form. 33/11276 useless extension candidates. Maximal degree in co-relation 88559. Up to 9066 conditions per place. [2024-06-28 01:18:03,452 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1083 selfloop transitions, 56 changer transitions 0/1147 dead transitions. [2024-06-28 01:18:03,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1147 transitions, 23654 flow [2024-06-28 01:18:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:18:03,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:18:03,453 INFO L175 Difference]: Start difference. First operand has 389 places, 1106 transitions, 20960 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:18:03,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 1147 transitions, 23654 flow [2024-06-28 01:18:05,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 1147 transitions, 23485 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:05,285 INFO L231 Difference]: Finished difference. Result has 394 places, 1107 transitions, 20936 flow [2024-06-28 01:18:05,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20791, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20936, PETRI_PLACES=394, PETRI_TRANSITIONS=1107} [2024-06-28 01:18:05,286 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 01:18:05,286 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1107 transitions, 20936 flow [2024-06-28 01:18:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:05,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:05,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:18:05,286 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:05,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 881164606, now seen corresponding path program 10 times [2024-06-28 01:18:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345124448] [2024-06-28 01:18:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:06,332 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 01:18:06,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:06,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345124448] [2024-06-28 01:18:06,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345124448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:06,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682580507] [2024-06-28 01:18:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:06,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:06,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:06,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:06,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1107 transitions, 20936 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:06,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:06,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:06,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:09,712 INFO L124 PetriNetUnfolderBase]: 5905/11179 cut-off events. [2024-06-28 01:18:09,712 INFO L125 PetriNetUnfolderBase]: For 315701/315747 co-relation queries the response was YES. [2024-06-28 01:18:09,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89558 conditions, 11179 events. 5905/11179 cut-off events. For 315701/315747 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 97138 event pairs, 892 based on Foata normal form. 31/11189 useless extension candidates. Maximal degree in co-relation 89371. Up to 6957 conditions per place. [2024-06-28 01:18:09,920 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 734 selfloop transitions, 445 changer transitions 0/1187 dead transitions. [2024-06-28 01:18:09,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1187 transitions, 24632 flow [2024-06-28 01:18:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 01:18:09,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-28 01:18:09,921 INFO L175 Difference]: Start difference. First operand has 394 places, 1107 transitions, 20936 flow. Second operand 10 states and 188 transitions. [2024-06-28 01:18:09,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1187 transitions, 24632 flow [2024-06-28 01:18:12,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 1187 transitions, 24518 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:12,028 INFO L231 Difference]: Finished difference. Result has 397 places, 1123 transitions, 22147 flow [2024-06-28 01:18:12,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20822, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22147, PETRI_PLACES=397, PETRI_TRANSITIONS=1123} [2024-06-28 01:18:12,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-28 01:18:12,029 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 1123 transitions, 22147 flow [2024-06-28 01:18:12,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:12,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:12,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:12,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:18:12,029 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:12,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash 881164482, now seen corresponding path program 8 times [2024-06-28 01:18:12,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:12,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655889633] [2024-06-28 01:18:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655889633] [2024-06-28 01:18:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655889633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:13,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766982743] [2024-06-28 01:18:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:13,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:13,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1123 transitions, 22147 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:13,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:13,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:13,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:16,432 INFO L124 PetriNetUnfolderBase]: 5950/11182 cut-off events. [2024-06-28 01:18:16,432 INFO L125 PetriNetUnfolderBase]: For 333929/334054 co-relation queries the response was YES. [2024-06-28 01:18:16,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91900 conditions, 11182 events. 5950/11182 cut-off events. For 333929/334054 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 96842 event pairs, 1046 based on Foata normal form. 104/11232 useless extension candidates. Maximal degree in co-relation 91713. Up to 8208 conditions per place. [2024-06-28 01:18:16,618 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 902 selfloop transitions, 263 changer transitions 0/1173 dead transitions. [2024-06-28 01:18:16,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1173 transitions, 25099 flow [2024-06-28 01:18:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:18:16,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-28 01:18:16,619 INFO L175 Difference]: Start difference. First operand has 397 places, 1123 transitions, 22147 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:18:16,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1173 transitions, 25099 flow [2024-06-28 01:18:18,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1173 transitions, 24351 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:18,795 INFO L231 Difference]: Finished difference. Result has 398 places, 1124 transitions, 21969 flow [2024-06-28 01:18:18,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21399, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=860, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21969, PETRI_PLACES=398, PETRI_TRANSITIONS=1124} [2024-06-28 01:18:18,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 01:18:18,796 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 1124 transitions, 21969 flow [2024-06-28 01:18:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:18,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:18,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:18,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:18:18,797 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1419742612, now seen corresponding path program 11 times [2024-06-28 01:18:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:18,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67784777] [2024-06-28 01:18:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:19,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67784777] [2024-06-28 01:18:19,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67784777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:19,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:19,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:19,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438388846] [2024-06-28 01:18:19,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:19,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:19,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:19,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1124 transitions, 21969 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:19,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:19,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:19,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:23,442 INFO L124 PetriNetUnfolderBase]: 6122/11390 cut-off events. [2024-06-28 01:18:23,443 INFO L125 PetriNetUnfolderBase]: For 356674/356828 co-relation queries the response was YES. [2024-06-28 01:18:23,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95145 conditions, 11390 events. 6122/11390 cut-off events. For 356674/356828 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 98111 event pairs, 815 based on Foata normal form. 142/11485 useless extension candidates. Maximal degree in co-relation 94958. Up to 3273 conditions per place. [2024-06-28 01:18:23,627 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 491 selfloop transitions, 720 changer transitions 0/1219 dead transitions. [2024-06-28 01:18:23,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1219 transitions, 26224 flow [2024-06-28 01:18:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 01:18:23,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324324324324324 [2024-06-28 01:18:23,628 INFO L175 Difference]: Start difference. First operand has 398 places, 1124 transitions, 21969 flow. Second operand 10 states and 197 transitions. [2024-06-28 01:18:23,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1219 transitions, 26224 flow [2024-06-28 01:18:25,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1219 transitions, 25678 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:25,796 INFO L231 Difference]: Finished difference. Result has 402 places, 1145 transitions, 23629 flow [2024-06-28 01:18:25,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21435, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=703, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23629, PETRI_PLACES=402, PETRI_TRANSITIONS=1145} [2024-06-28 01:18:25,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 01:18:25,796 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 1145 transitions, 23629 flow [2024-06-28 01:18:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:25,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:25,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:18:25,797 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:25,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 881169256, now seen corresponding path program 11 times [2024-06-28 01:18:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733121929] [2024-06-28 01:18:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:26,975 INFO 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 01:18:26,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733121929] [2024-06-28 01:18:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733121929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669491052] [2024-06-28 01:18:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:26,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:27,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:27,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 1145 transitions, 23629 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:27,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:27,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:27,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:30,686 INFO L124 PetriNetUnfolderBase]: 6137/11603 cut-off events. [2024-06-28 01:18:30,686 INFO L125 PetriNetUnfolderBase]: For 366071/366134 co-relation queries the response was YES. [2024-06-28 01:18:30,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98857 conditions, 11603 events. 6137/11603 cut-off events. For 366071/366134 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 101390 event pairs, 1005 based on Foata normal form. 32/11611 useless extension candidates. Maximal degree in co-relation 98668. Up to 7514 conditions per place. [2024-06-28 01:18:30,895 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 803 selfloop transitions, 406 changer transitions 0/1217 dead transitions. [2024-06-28 01:18:30,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1217 transitions, 27043 flow [2024-06-28 01:18:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:18:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-28 01:18:30,896 INFO L175 Difference]: Start difference. First operand has 402 places, 1145 transitions, 23629 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:18:30,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1217 transitions, 27043 flow [2024-06-28 01:18:33,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1217 transitions, 26620 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-28 01:18:33,190 INFO L231 Difference]: Finished difference. Result has 408 places, 1152 transitions, 24215 flow [2024-06-28 01:18:33,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23214, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24215, PETRI_PLACES=408, PETRI_TRANSITIONS=1152} [2024-06-28 01:18:33,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 01:18:33,191 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 1152 transitions, 24215 flow [2024-06-28 01:18:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:33,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:33,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:33,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:18:33,191 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:33,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 881169442, now seen corresponding path program 12 times [2024-06-28 01:18:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716208176] [2024-06-28 01:18:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716208176] [2024-06-28 01:18:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716208176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143001613] [2024-06-28 01:18:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:34,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:34,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:34,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 1152 transitions, 24215 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:34,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:34,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:34,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:38,834 INFO L124 PetriNetUnfolderBase]: 6492/12106 cut-off events. [2024-06-28 01:18:38,834 INFO L125 PetriNetUnfolderBase]: For 420851/420890 co-relation queries the response was YES. [2024-06-28 01:18:38,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106002 conditions, 12106 events. 6492/12106 cut-off events. For 420851/420890 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 105425 event pairs, 965 based on Foata normal form. 36/12096 useless extension candidates. Maximal degree in co-relation 105811. Up to 3413 conditions per place. [2024-06-28 01:18:39,020 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 645 selfloop transitions, 613 changer transitions 0/1266 dead transitions. [2024-06-28 01:18:39,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 1266 transitions, 29217 flow [2024-06-28 01:18:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 01:18:39,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-28 01:18:39,024 INFO L175 Difference]: Start difference. First operand has 408 places, 1152 transitions, 24215 flow. Second operand 10 states and 202 transitions. [2024-06-28 01:18:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 1266 transitions, 29217 flow [2024-06-28 01:18:41,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1266 transitions, 28388 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:41,871 INFO L231 Difference]: Finished difference. Result has 410 places, 1187 transitions, 25604 flow [2024-06-28 01:18:41,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23394, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25604, PETRI_PLACES=410, PETRI_TRANSITIONS=1187} [2024-06-28 01:18:41,872 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-28 01:18:41,872 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 1187 transitions, 25604 flow [2024-06-28 01:18:41,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:41,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:41,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:41,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:18:41,873 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:41,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 881342422, now seen corresponding path program 13 times [2024-06-28 01:18:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183071431] [2024-06-28 01:18:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:42,917 INFO 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 01:18:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183071431] [2024-06-28 01:18:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183071431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:42,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:42,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195690888] [2024-06-28 01:18:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:43,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:43,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 1187 transitions, 25604 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:43,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:47,486 INFO L124 PetriNetUnfolderBase]: 6478/11937 cut-off events. [2024-06-28 01:18:47,486 INFO L125 PetriNetUnfolderBase]: For 411072/411213 co-relation queries the response was YES. [2024-06-28 01:18:47,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106393 conditions, 11937 events. 6478/11937 cut-off events. For 411072/411213 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 102684 event pairs, 912 based on Foata normal form. 137/12027 useless extension candidates. Maximal degree in co-relation 106202. Up to 3406 conditions per place. [2024-06-28 01:18:47,678 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 599 selfloop transitions, 655 changer transitions 0/1262 dead transitions. [2024-06-28 01:18:47,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1262 transitions, 29454 flow [2024-06-28 01:18:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 01:18:47,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-28 01:18:47,680 INFO L175 Difference]: Start difference. First operand has 410 places, 1187 transitions, 25604 flow. Second operand 10 states and 198 transitions. [2024-06-28 01:18:47,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1262 transitions, 29454 flow [2024-06-28 01:18:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1262 transitions, 28076 flow, removed 279 selfloop flow, removed 5 redundant places. [2024-06-28 01:18:50,338 INFO L231 Difference]: Finished difference. Result has 415 places, 1187 transitions, 25580 flow [2024-06-28 01:18:50,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24226, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25580, PETRI_PLACES=415, PETRI_TRANSITIONS=1187} [2024-06-28 01:18:50,338 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-28 01:18:50,339 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 1187 transitions, 25580 flow [2024-06-28 01:18:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:50,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:50,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:50,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:18:50,339 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:50,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash 881342236, now seen corresponding path program 12 times [2024-06-28 01:18:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:50,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512213041] [2024-06-28 01:18:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:51,672 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 01:18:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:51,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512213041] [2024-06-28 01:18:51,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512213041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:51,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:51,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256164059] [2024-06-28 01:18:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:51,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:51,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:51,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:51,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:18:51,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1187 transitions, 25580 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:51,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:51,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:18:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:55,983 INFO L124 PetriNetUnfolderBase]: 6461/12197 cut-off events. [2024-06-28 01:18:55,983 INFO L125 PetriNetUnfolderBase]: For 396980/397099 co-relation queries the response was YES. [2024-06-28 01:18:56,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105557 conditions, 12197 events. 6461/12197 cut-off events. For 396980/397099 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 107066 event pairs, 1081 based on Foata normal form. 88/12261 useless extension candidates. Maximal degree in co-relation 105365. Up to 8017 conditions per place. [2024-06-28 01:18:56,362 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 819 selfloop transitions, 425 changer transitions 0/1252 dead transitions. [2024-06-28 01:18:56,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1252 transitions, 28874 flow [2024-06-28 01:18:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:18:56,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:18:56,363 INFO L175 Difference]: Start difference. First operand has 415 places, 1187 transitions, 25580 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:18:56,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 1252 transitions, 28874 flow [2024-06-28 01:18:59,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1252 transitions, 27626 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:59,085 INFO L231 Difference]: Finished difference. Result has 418 places, 1187 transitions, 25208 flow [2024-06-28 01:18:59,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24332, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25208, PETRI_PLACES=418, PETRI_TRANSITIONS=1187} [2024-06-28 01:18:59,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 01:18:59,086 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 1187 transitions, 25208 flow [2024-06-28 01:18:59,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:59,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:59,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:59,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:18:59,087 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:18:59,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 142329862, now seen corresponding path program 2 times [2024-06-28 01:18:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:59,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315369170] [2024-06-28 01:18:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315369170] [2024-06-28 01:18:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315369170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:59,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549135570] [2024-06-28 01:18:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:19:00,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1187 transitions, 25208 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:00,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:00,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:19:00,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:04,210 INFO L124 PetriNetUnfolderBase]: 6511/12473 cut-off events. [2024-06-28 01:19:04,210 INFO L125 PetriNetUnfolderBase]: For 402127/402191 co-relation queries the response was YES. [2024-06-28 01:19:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105121 conditions, 12473 events. 6511/12473 cut-off events. For 402127/402191 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 111841 event pairs, 1887 based on Foata normal form. 32/12475 useless extension candidates. Maximal degree in co-relation 104928. Up to 9922 conditions per place. [2024-06-28 01:19:04,430 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 1128 selfloop transitions, 96 changer transitions 0/1232 dead transitions. [2024-06-28 01:19:04,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1232 transitions, 28151 flow [2024-06-28 01:19:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:19:04,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:19:04,431 INFO L175 Difference]: Start difference. First operand has 418 places, 1187 transitions, 25208 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:19:04,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 1232 transitions, 28151 flow [2024-06-28 01:19:06,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1232 transitions, 27312 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:06,825 INFO L231 Difference]: Finished difference. Result has 420 places, 1193 transitions, 24692 flow [2024-06-28 01:19:06,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24373, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1093, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24692, PETRI_PLACES=420, PETRI_TRANSITIONS=1193} [2024-06-28 01:19:06,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 01:19:06,826 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1193 transitions, 24692 flow [2024-06-28 01:19:06,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:06,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:06,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:19:06,826 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:06,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 142083784, now seen corresponding path program 14 times [2024-06-28 01:19:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:06,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916457232] [2024-06-28 01:19:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:06,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916457232] [2024-06-28 01:19:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916457232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:07,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:07,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:07,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398577686] [2024-06-28 01:19:07,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:07,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:07,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:19:07,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1193 transitions, 24692 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:07,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:07,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:19:07,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:12,281 INFO L124 PetriNetUnfolderBase]: 6615/12563 cut-off events. [2024-06-28 01:19:12,282 INFO L125 PetriNetUnfolderBase]: For 403264/403330 co-relation queries the response was YES. [2024-06-28 01:19:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105289 conditions, 12563 events. 6615/12563 cut-off events. For 403264/403330 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 111968 event pairs, 1791 based on Foata normal form. 33/12566 useless extension candidates. Maximal degree in co-relation 105095. Up to 9509 conditions per place. [2024-06-28 01:19:12,496 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 1099 selfloop transitions, 165 changer transitions 0/1272 dead transitions. [2024-06-28 01:19:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1272 transitions, 28550 flow [2024-06-28 01:19:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:19:12,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:19:12,498 INFO L175 Difference]: Start difference. First operand has 420 places, 1193 transitions, 24692 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:19:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1272 transitions, 28550 flow [2024-06-28 01:19:15,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1272 transitions, 28358 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:19:15,210 INFO L231 Difference]: Finished difference. Result has 424 places, 1211 transitions, 25326 flow [2024-06-28 01:19:15,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24502, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1037, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25326, PETRI_PLACES=424, PETRI_TRANSITIONS=1211} [2024-06-28 01:19:15,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 01:19:15,211 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1211 transitions, 25326 flow [2024-06-28 01:19:15,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:15,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:15,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:19:15,212 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:19:15,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 135834184, now seen corresponding path program 15 times [2024-06-28 01:19:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155939743] [2024-06-28 01:19:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:16,196 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 01:19:16,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:16,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155939743] [2024-06-28 01:19:16,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155939743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:16,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:16,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487900213] [2024-06-28 01:19:16,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:16,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:19:16,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1211 transitions, 25326 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:16,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:16,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:19:16,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand